MAJOR TRAUMA EVIDENCE RUNDOWN — ISSUE 6 — SEPTEMBER 2026
Major Trauma Evidence Rundown
Trauma surgery, orthopaedics, critical care and resuscitation — for UK MTCs and trauma units — emevidence.org
Jake Turner — Senior Registrar in Emergency Medicine, ST6 — Curated with the assistance of AI (Perplexity). All content editorially reviewed.
Lead: SWiFT (NEJM 2026) — UK HEMS RCT confirms prehospital whole blood is NOT superior to component therapy. Death or massive transfusion within 24h: 48.7% vs 47.7% (RR 1.02, p=0.84). TOWAR (NEJM 2026) corroborates this internationally. Together, two landmark phase 3 RCTs close the chapter on whole blood superiority claims. Change This Month: NICE QS138 revised — the ‘expected moderate blood loss’ TXA threshold has been removed. TXA decision-making is simplified: no longer gated on anticipated blood loss category. MHRA Device Alert: Cobalt-chrome modular neck hip replacements — metal-wear effects and revision surgery risk (DSI/2026/010, 26 August 2026). Mandatory safety notice for orthopaedic trauma surgeons. Core Revision this issue: Penetrating Trauma — ballistic and stab injuries; ABCDE approach, haemorrhage control, vascular assessment, damage control surgery decision-making, and operational considerations. FRCS (Gen Surgery) / FRCS (T&O) / Final FRCA relevant.
BOTTOM LINE UP FRONT — SEPTEMBER 2026
ACT ON THIS NOW
CHANGE THIS MONTH SWiFT + TOWAR (NEJM 2026): Prehospital whole blood NOT superior to red cells + plasma. RR 1.02 (SWiFT, UK); aOR 1.24 (TOWAR, US). Review MHP whole-blood procurement decisions at your unit.
CHANGE THIS MONTH NICE QS138 TXA: ‘Moderate blood loss expected’ threshold REMOVED. TXA no longer requires anticipation of a specific blood loss category. Simplifies perioperative trauma decisions.
MHRA ALERT Cobalt-chrome modular neck hips (DSI/2026/010): Metal-wear at taper junction. Risk of pseudotumour, adverse tissue reactions, revision. Check implant records in hip fracture patients with prior replacement presenting with pain or failure.
GUIDELINE BOA BOAST — Arterial Injuries with MSK Trauma: New standard (June 2026) co-signed by BAPRAS + Vascular Society. Revascularisation target: within 1 hour (NCEPOD). Covers blast/ballistic mechanisms. Read before next penetrating vascular case.
GUIDELINE EXTRACCT Blast/Penetrating CPGs (World J Surg 2026): First international CPGs for blast-TBI and blast-injury transfer in variable-resource settings. MTC major incident preparedness resource.
KNOW FOR NEXT TIME
UK DATA Lateral implosion injuries (JTACS, UK MTC): 18.9% of multiple rib fracture patients have combined rib/shoulder girdle injury. Worse outcomes, longer stay. Use Ch-Sh classification — discriminates need for shoulder ORIF.
INFORMING Early RA in flail chest (≤24h) reduces intubation and ICU admission (JTACS 2026, n=4,563). Only 24% of eligible patients receive early RA — significant QI opportunity.
INFORMING Obtunded patients — higher fasciotomy risk after tibial fractures. Obtunded status independently associated with higher fasciotomy rates. Monitor compartments clinically and with pressure measurement in all intubated tibial fracture patients.
INFORMING HALO procedures (REBOA, EDT, ECPR): New JTACS framework emphasises institutional competence as distinct from individual operator skill. Governance, training, pathway integration all required.
INFORMING SHOT 2025: 54 transfusion-related deaths. 83% preventable. TACO remains leading cause of death. Transfusion Safety Standards now mandatory per Infected Blood Inquiry recommendations.
UK DATA MATTS triage tool (38,010 UK patients): 55% sensitivity, 94% specificity for major trauma. Over 40% of major trauma missed at triage — under-triage audit indicated.
This month’s issue is anchored by two landmark NEJM trials that definitively settle the prehospital whole blood debate for now: SWiFT, the UK NHSBT-funded RCT across 10 HEMS services, and TOWAR, the US air medical cluster RCT, both confirm no survival superiority for whole blood over balanced component therapy. The point estimates in TOWAR numerically favour components. These are not inconclusive results with room for optimism — they are two independent phase 3 RCTs reaching the same conclusion. The argument for whole blood now rests on logistics and feasibility, not mortality. The core revision this month covers penetrating trauma — ballistic and stab injuries — timed to coincide with the EXTRACCT blast-injury CPGs and the new BOA BOAST on arterial injuries. The NICE QS138 TXA threshold removal is a practical change for perioperative teams. Twenty items this month.
WHAT’S INSIDE — ISSUE 6
- SWiFT + TOWAR — whole blood not superior (NEJM)
- MHRA DSI/2026/010 — cobalt-chrome modular neck hips
- BOA BOAST — arterial injuries with MSK trauma
- NICE QS138 — TXA threshold removed
- SHOT 2025 Annual Report — 54 deaths, 83% preventable
- EXTRACCT Blast CPGs (blast-TBI + transfer)
- Blunt vs penetrating trauma physiology (SJTREM)
- Compartment syndrome risk in obtunded tibial fractures
- Thoracoscopic vs open rib fixation (Eur J Trauma RCT)
- Lateral implosion injuries — UK MTC data (JTACS)
- Early regional anaesthesia in flail chest (JTACS)
- Beyond damage control — functional preservation (Injury)
- HALO procedures institutional framework (REBOA/EDT/ECPR)
- Splenic artery embolisation vs surgery (systematic review)
- LTOWB — low alloantibody formation safety data (Ann Surg)
- MATTS triage tool — UK validation 38,010 patients
- Pragmatic traumatic shock definition (Injury)
- Blunt vs penetrating physiology — distinct coagulopathy (SJTREM)
- Level 1 vs Level 3 trauma centre outcomes in older adults
- Core Revision: Penetrating Trauma
Contents: 1. Change This Month — 2. MHRA & Guidelines — 3. Penetrating Trauma — 4. Chest Trauma — 5. Orthopaedic Trauma — 6. Damage Control & Resuscitation — 7. Abdominal Trauma — 8. Trauma Systems — 9. Quick Hits — 10. Action Points — 11. Core Revision: Penetrating Trauma
1 — CHANGE THIS MONTH
SWiFT Trial — Prehospital Whole Blood Not Superior to Component Therapy (NEJM 2026, UK)
Smith JE, Sherwood R, Lecky FE et al. New England Journal of Medicine. 2026;394(23):2305–2316. doi:10.1056/NEJMoa2516043 PMID: 41841706 — UK NHSBT-funded RCT — ISRCTN23657907 What this is: A UK-funded pragmatic open-label RCT across 10 English air ambulance (HEMS) services. Patients with suspected life-threatening traumatic haemorrhage were randomised to 2 units of prehospital whole blood vs standard care (2 units RBC + 2 units plasma). Primary outcome: composite of death or massive transfusion requirement within 24 hours.
- RR 1.02 PRIMARY OUTCOME: DEATH OR MASSIVE TRANSFUSION WITHIN 24H (95% CI 0.80–1.31)
- p = 0.84 NOT SUPERIOR. ARD: 1.0%. N=616
- 48.7% WHOLE BLOOD ARM (153/314)
- 47.7% COMPONENT THERAPY ARM (144/302)
No mortality benefit was demonstrated at 24 hours, 30 days, or 90 days. Prolonged PT was more frequent in the whole blood arm. Safety outcomes were comparable between groups.
UK practice: This is the first large UK RCT in this field, funded by NHSBT and conducted across 10 English HEMS services. UK MTCs considering or implementing whole blood procurement programmes should review their rationale. The case for prehospital whole blood now rests on logistics, shelf life, and feasibility — not mortality benefit. Major haemorrhage protocol authors should note this when next reviewing MHP documentation. Do not abandon well-functioning balanced component therapy on the basis of pre-RCT observational data.
TOWAR Trial — Whole Blood Also Non-Superior for 30-Day Mortality in US HEMS Setting (NEJM 2026)
Sperry JL, Brown JB, Neal MD et al. New England Journal of Medicine. Published online May 2026. doi:10.1056/NEJMoa2602167 — US cluster RCT; presented at ATS 2026 What this is: A US pragmatic cluster RCT across 44 air medical bases. Low-titre group O whole blood vs standard prehospital blood-component therapy. Primary outcome: 30-day mortality.
- aOR 1.24 30-DAY MORTALITY (95% CI 0.87–1.76; P=0.24)
- 25.9% WHOLE BLOOD ARM 30-DAY MORTALITY (180/695)
- 20.5% COMPONENT THERAPY ARM 30-DAY MORTALITY (61/298)
Summary: Two independent phase 3 RCTs (SWiFT UK; TOWAR US) now confirm no superiority of prehospital whole blood over balanced component therapy. The point estimate in TOWAR numerically favoured components (20.5% vs 25.9%). The TROOP trial is the next key study to watch. An editorial in Blood Transfusion 2026;24(4):291–293 (PMID 42295881) notes European blood-supply logistics as the main remaining practical question — not mortality.
2 — MHRA & GUIDELINE UPDATES
Cobalt-Chrome Modular Neck Hip Replacements — Metal-Wear Risk and Revision Surgery (DSI/2026/010)
MHRA Device Safety Information DSI/2026/010. Published 26 August 2026. gov.uk/drug-device-alerts/cobalt-chrome-modular-neck-hip-replacements MHRA safety alert for cobalt-chrome modular neck hip prostheses (multiple manufacturers). Metal-on-metal wear at the neck-stem taper junction can cause adverse local tissue reactions (ALTR), pseudotumour formation, elevated serum cobalt and chromium, and implant failure requiring revision surgery. Risk appears related to head-neck taper design, modularity, and patient activity level.
Action for orthopaedic trauma surgeons: When managing hip fractures or periprosthetic fractures in patients with a prior hip replacement, check implant records for cobalt-chrome modular neck components. Patients presenting with unexplained hip pain, swelling, or functional decline following previous hip arthroplasty warrant imaging (MARS MRI) and serum metal ion levels. Inform patients with these implants of the risk as part of routine follow-up. Report any adverse reactions via the Yellow Card scheme. Comply with any manufacturer-specific surveillance protocols referenced in the alert.
New BOAST — Diagnosis and Management of Arterial Injuries Associated with Musculoskeletal Trauma
British Orthopaedic Association, BAPRAS, Vascular Society of Great Britain and Ireland. Published June 2026. boa.ac.uk — Arterial Injuries BOAST Updated BOAST jointly produced by the BOA, BAPRAS, and the Vascular Society, superseding the previous standard on arterial injuries associated with extremity fractures and dislocations. Key standards include: revascularisation within one hour of diagnosis (NCEPOD Grade A equivalent); CTA as the investigation of choice where clinically safe to obtain; defined decision pathways for vascular bypass grafting including in blast and ballistic mechanisms; and explicit fasciotomy guidance.
Penetrating trauma relevance: The revised BOAST explicitly covers blast and ballistic injury mechanisms in the bypass graft decision-making section — directly relevant to penetrating vascular trauma management at UK MTCs. For this month’s core revision on penetrating trauma, this standard should be read alongside the EXTRACCT CPGs. The one-hour revascularisation target requires MTCs to have 24/7 vascular surgery and interventional radiology on-call pathways embedded in their MTP.
NICE QS138 Revised — ‘Expected Moderate Blood Loss’ TXA Threshold Removed
NICE Quality Standard 138, Statement 2 — updated February 2026. nice.org.uk/guidance/qs138 The previous QS138 quality statement required TXA to be given only when “moderate or greater blood loss” was expected. This threshold has been removed. TXA use is no longer gated on the clinician’s prospective anticipation of a specific blood loss category, removing an ambiguous and subjective decision point from perioperative trauma management.
UK practice: This change simplifies TXA prescribing in acute trauma and perioperative settings. For major trauma, this reinforces the existing practice of giving TXA early in all patients with significant injury mechanism and suspected haemorrhage — as per CRASH-2/CRASH-3 and NICE NG24 existing guidance. For surgical teams at MTCs, this removes the justification for withholding TXA in “probably moderate” blood-loss cases. Update local perioperative protocols to reflect the removal of the threshold language.
SHOT 2025 Annual Report — 54 Transfusion-Related Deaths; 83% of Incidents Preventable
Serious Hazards of Transfusion Annual Report 2025. Published 10 July 2026. shotuk.org/shot-reports 5,147 reports submitted in 2025 (up 2.3% on 2024). 54 transfusion-related deaths (down from 59 in 2024). 83% of reported incidents involved preventable errors. Risk of transfusion-related death: approximately 1 in 40,000 components issued. Near misses remain the largest single category (33.9% of reports). Transfusion-associated circulatory overload (TACO) remains the leading cause of pulmonary transfusion death. Zero confirmed transfusion-transmitted infections in 2025. Eight ABO-incompatible transfusions reported.
Trauma transfusion relevance: The Infected Blood Inquiry’s Transfusion Safety Standards (published 2025) are now applicable — SHOT is urging hospitals to implement these. For major trauma teams: the SHOT data underlines the ongoing burden of preventable transfusion errors including wrong patient errors and TACO, which remain risks in any massive haemorrhage scenario. MTC transfusion leads should confirm their major haemorrhage protocol includes identity checking steps and TACO risk screening, and that nursing staff are trained on SHOT reporting pathways. A new “Blood Service Errors” chapter in this year’s report covers supply-chain and labelling errors.
3 — PENETRATING TRAUMA
EXTRACCT — Blast-TBI Clinical Practice Guideline for Variable-Resource Settings
Explosive Weapons Trauma Care Collective (EXTRACCT). World Journal of Surgery. 2026. PMID 42400549 The first international clinical practice guideline addressing blast-induced traumatic brain injury (blast-TBI) across settings with variable resources — from well-resourced civilian MTCs through to austere environments. Covers triage decision-making for blast-TBI, haemostasis and anticoagulation management, decompressive craniectomy timing, ICP monitoring indications, and criteria for transfer to specialist neurosurgical centres. Developed by an international expert collective with military and civilian trauma expertise.
UK relevance: Relevant to UK MTCs with blast-casualty and major incident responsibilities, particularly those in London, Manchester, and other high-footfall urban centres. Provides a structured framework for a scenario type that may lack local institutional protocol. Should be reviewed by trauma surgery leads, neurosurgery, and anaesthetics as part of MERT and CBRN-E major incident preparedness.
EXTRACCT — Transfer of Blast-Injured Patients: Clinical Practice Guideline
Explosive Weapons Trauma Care Collective (EXTRACCT). World Journal of Surgery. 2026. Companion CPG to the blast-TBI guideline. Provides stepwise clinical decision gates for packaging and transferring blast-injury patients, including pre-transfer haemostasis optimisation, monitoring requirements, communication checklists, and staffing standards for different resource contexts. Emphasises that transfer decisions in blast patients must be made by a senior clinician with direct patient assessment, not by default protocol alone.
Operational note: Aligns with JESIP joint transfer doctrine and NHS England major incident transfer standards. Useful reference for receiving MTC teams planning inter-facility transfers of blast-injured patients from trauma units or non-designated centres following a major incident.
Blunt vs Penetrating Trauma — Distinct Early Physiology, Coagulopathy Patterns and Outcomes
Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 2026. Scandinavian trauma registry analysis directly comparing early haemodynamic physiology, coagulopathy signatures, and clinical outcomes between blunt and penetrating trauma presentations. Penetrating trauma demonstrates a distinct coagulopathy phenotype with earlier and more severe fibrinogen depletion, different platelet dynamics, and a faster progression to severe physiological derangement compared with blunt mechanism. The study supports trauma-type-specific resuscitation and MHP activation protocols rather than a single one-size-fits-all approach.
UK practice: UK MTCs increasingly deal with penetrating trauma (urban violence, industrial accidents) alongside blunt mechanism. This data provides further evidence for separate penetrating-trauma haemorrhage control and transfusion pathways within MHPs, with earlier cryoprecipitate/fibrinogen consideration. Discuss with your MTC haematology lead when reviewing MHP documentation.
4 — CHEST TRAUMA
Lateral Implosion Injuries — UK MTC Cohort: Worse Outcomes Than Isolated Rib Fractures
Journal of Trauma and Acute Care Surgery. 2026;101(3):xxx. doi:10.1097/TA.0000000000005103 PMID: 42492082 — UK Major Trauma Centre retrospective cohort 2010–2024 Retrospective analysis of 4,145 patients with multiple rib fractures at a UK MTC (2010–2024). 18.9% had combined rib and shoulder girdle injuries (“lateral implosion injuries”), independently associated with significantly longer length of stay, higher resource utilisation, and worse outcomes compared with patients with isolated rib fractures. The Ch-Sh Classification demonstrated good discrimination for predicting need for shoulder girdle ORIF, which was required in a clinically significant subset.
UK relevance: This is UK MTC data spanning 14 years. Lateral implosion injuries are not universally recognised as a distinct injury pattern. The finding that nearly 1 in 5 multiple rib fracture patients has a co-existing shoulder girdle injury with independent outcome implications has direct implications for trauma CT reporting, orthopaedic review referral thresholds, and surgical planning protocols at UK MTCs.
Thoracoscopic Rib Fixation vs Open ORIF vs Conservative — Better QoL; Comparable Outcomes
European Journal of Trauma and Emergency Surgery. 2026. PMID 42671473 Prospective comparative study of thoracoscopic internal fixation, open ORIF, and conservative management for traumatic rib fractures. Both surgical approaches restored thoracic volume and improved early quality of life over conservative management. Thoracoscopic fixation achieved outcomes comparable to open ORIF with lower surgical morbidity — less pain, smaller chest wall incision, fewer complications.
UK relevance: Supports expansion of thoracoscopic rib fixation programmes where thoracic surgical expertise is available within UK MTCs. Not yet widespread in UK practice. Useful evidence for surgical rib fixation team development discussions and for justifying thoracoscopic approach in appropriate patients with multiple rib fractures and flail chest.
Early Regional Anaesthesia (≤24h) Reduces Intubation and ICU Admission in Isolated Flail Chest
Journal of Trauma and Acute Care Surgery. 2026;101(3):xxx. doi:10.1097/TA.0000000000005114 PMID: 42519971 — ACS-TQIP database analysis, n=4,563 ACS Trauma Quality Improvement Program (TQIP) database analysis of 4,563 isolated flail chest cases (2017–2023). Early regional anaesthesia within 24 hours was used in only 24.2% of eligible patients. Early RA was independently associated with significantly lower rates of unplanned intubation, lower ICU admission, shorter length of stay, and higher rates of routine discharge, compared with late or absent RA.
UK QI opportunity: Only one in four eligible patients currently receives early regional anaesthesia. This finding should prompt UK MTCs to audit their rib fracture RA rates. Early RA for flail chest — whether serratus anterior plane block, thoracic epidural, or PECS block — should be part of a standardised flail chest care pathway. Review your anaesthetic team’s capacity for same-day RA in chest trauma at your centre.
5 — ORTHOPAEDIC TRAUMA
Obtunded Patients Have Significantly Higher Fasciotomy Rates After Tibial Fractures — ACS Risk
Injury. 2026. PMID 42663671 Retrospective cohort study examining the impact of altered consciousness on fasciotomy rates following tibial fractures and acute compartment syndrome. Obtunded status was independently associated with a significant increase in fasciotomy rates. Patients who are intubated, sedated, or have impaired conscious level cannot report the classic symptoms of ACS (severe pain out of proportion, pain on passive stretch), removing the primary clinical trigger for diagnosis.
UK practice: This is a direct patient safety message for any trauma surgeon or anaesthetist managing an intubated patient with a tibial fracture. Do not rely on pain symptoms alone to trigger ACS assessment in obtunded or sedated patients. Use compartment pressure monitoring (delta pressure <30 mmHg as surgical threshold) as a routine adjunct in all intubated patients with tibial diaphyseal fractures, particularly following high-energy mechanisms or prolonged extrication. Document compartment check in handover notes.
6 — DAMAGE CONTROL & RESUSCITATION
Beyond Damage Control — Functional Preservation and Avoidance of Iatrogenic Harm
Injury. 2026. Injury 2026 (in press) Important conceptual paper arguing that damage control surgery selection must be driven by physiology, anatomy, ischaemic burden, and evacuation context — not applied reflexively to all high-energy trauma. Overuse of DCS beyond its original physiological indications carries significant iatrogenic risks including abdominal compartment syndrome, planned relook morbidity, prolonged critical care dependency, and missed functional preservation opportunities. The paper advocates for a “definitive-first where safe” philosophy alongside physiologically-driven damage control.
UK relevance: Addresses the well-recognised trend toward DCS overuse in trauma centres. For UK MTC surgeons, this paper frames the ongoing DCS decision as a risk-benefit calculation, not a default response to injury severity. The NCEPOD report Risking Life and Limb (2025) similarly highlighted variation in DCS decision-making quality across UK centres. Discuss within your trauma surgery governance meetings.
Low-Titer O Whole Blood — Low Alloantibody Formation in Severely Injured Patients
Annals of Surgery. 2026. PMID 42328743 Prospective study examining early alloantibody formation following low-titer O whole blood (LTOWB) transfusion in severely injured trauma patients undergoing haemorrhagic resuscitation. The incidence of early alloantibody formation was low with LTOWB compared with component therapy, providing reassuring safety data for units that have adopted whole blood despite SWiFT and TOWAR demonstrating no survival superiority.
Transfusion medicine note: The principal concern with universal O whole blood has been alloimmunisation risk, particularly for women of childbearing age. This study provides incremental safety reassurance. However, SWiFT and TOWAR remain the primary evidence for any prospective whole-blood adoption decision. NHSBT guidance on LTOWB use should be the reference standard for UK units.
Pragmatic Clinical Definition of Traumatic Shock Using SBP and Shock Index (Injury 2026)
Injury. 2026. Derivation study producing a pragmatic bedside definition of traumatic shock using systolic blood pressure and shock index (HR/SBP) thresholds. The proposed criteria identify a major trauma subgroup with substantially higher early mortality, and could provide a more consistent and reproducible trigger for major haemorrhage protocol activation and resuscitation escalation across UK trauma networks.
UK relevance: Currently, MHP activation criteria vary considerably between UK MTCs and trauma units. A standardised, readily calculable shock definition could reduce under-activation variation. Watch for validation studies in UK TARN/NMTR datasets.
7 — ABDOMINAL TRAUMA
Splenic Artery Embolisation vs Surgery for Blunt Splenic Injuries — Systematic Review
Injury. 2026. Systematic review comparing splenic artery embolisation (SAE) against operative management (splenectomy or splenorrhaphy) for blunt splenic injuries. SAE shows comparable overall failure rates and lower procedural morbidity in grade III–IV injuries compared with operative management. The evidence is limited by confounding-by-indication and heterogeneity, particularly around haemodynamic selection criteria. Supports a non-operative first approach with SAE escalation in haemodynamically stable or transiently responsive grade III–IV splenic injuries.
UK practice: Non-operative management of blunt splenic trauma (NOM) with SAE is current standard of care at UK MTCs with 24/7 interventional radiology. This review reinforces that pathway. Haemodynamically unstable patients require operative management — SAE is not appropriate as first-line in non-responders. Ensure your MTC has clear criteria for the transition from NOM/SAE to operative intervention, including maximum transfusion thresholds before escalation.
8 — TRAUMA SYSTEMS & GOVERNANCE
HALO Procedures (REBOA, EDT, ECPR) — Institutional Competence Framework (JTACS 2026)
Journal of Trauma and Acute Care Surgery. 2026;101(3):xxx. doi:10.1097/TA.0000000000005144 PMID: 42492083 Framework paper addressing high-acuity low-occurrence (HALO) procedures including REBOA, emergency department thoracotomy (EDT), and ECPR. The central argument: individual operator skill is necessary but insufficient for safe HALO procedure delivery. Institutional competence requires five additional domains — clinical governance structures, structured training and skill maintenance programmes, readiness engineering (equipment, team, process), downstream pathway integration (ICU/theatre capacity for REBOA survivors), and continuous QI learning from each case.
UK relevance: REBOA programmes are operating in a small number of UK MTCs; EDT is available at most. This framework is directly applicable to UK MTC clinical governance, appraisal, and NCEPOD review processes. Surgical leads implementing or reviewing REBOA programmes should use this as a governance checklist. Note especially the “downstream pathway integration” domain — a REBOA-capable centre that cannot reliably transition the surviving patient to hybrid theatre is not HALO-competent.
MATTS Major Trauma Triage Tool — 55% Sensitivity in UK Cohort of 38,010 Patients
White Rose Research Online / Emergency Medicine Journal. 2026. eprints.whiterose.ac.uk UK cohort study validating the MATTS triage tool across 38,010 injured patients. Sensitivity was 55.3% (95% CI 51.8–58.7%) and specificity was 94.3% (95% CI 94.1–94.6%) for major trauma identification. More than 40% of patients with confirmed major trauma were not identified by the triage tool. The high specificity limits over-triage; the moderate sensitivity means significant under-triage occurs in routine use.
UK audit implication: Under-triage of major trauma remains a significant problem in UK pre-hospital and ED triage. This data supports ongoing NHS England NMTR interest in triage performance benchmarking across trauma networks. Trauma network leads should audit their own under-triage rates using NMTR data and consider MATTS sensitivity limitations when reviewing trauma pathway design and pre-alert thresholds.
Level 1 vs Level 3 Trauma Centres — Survival Benefit Selective in Older Adults (JTACS 2026)
Journal of Trauma and Acute Care Surgery. 2026;101(1):xxx. doi:10.1097/TA.0000000000005109 PMID: 42413471 — NTDB analysis, 2.79 million patients Propensity-weighted analysis of 2,788,401 patients across 526 US Level 1 and Level 3 trauma centres (NTDB). Level 1 centres showed a clear survival advantage for younger adults across all injury severity subsets. For older adults, the Level 1 advantage was restricted to severe TBI and high ISS (>25) — for lower-severity older patients, Level 3 centres showed comparable outcomes. This supports a selective complementary-care model for triage in older adult major trauma, not unconditional bypass to Level 1 centres.
UK context: Older adults now account for the majority of major trauma presentations in England (falls from standing height are the most common mechanism, per TARN data). The NHS England MTC/TU network triage bypass criteria are predominantly injury-mechanism and physiology-driven. This US data adds nuance: consider TU-level care as appropriate for stable older patients with lower-severity injuries, reserving MTC bypass for those with severe TBI, ISS >25, or haemodynamic instability.
9 — QUICK HITS
Cervical Spine Immobilisation After Stab Wounds to the Neck Is Unnecessary
Emergency Medicine Australasia, 2026 — via The Bottom Line, 25 July 2026
Review/study suggesting routine cervical spine immobilisation after penetrating neck wounds is not supported by evidence and may delay airway management. The mechanism of injury does not generate the flexion-extension forces required to produce unstable cervical injury. Directly relevant to the penetrating trauma core revision topic this month. UK clinical guidance: penetrating neck injuries do not require routine cervical collar in the absence of neurological signs.
WHO Rehabilitation and Burn Mass Casualty Incidents — Brief Published
WHO Noncommunicable Diseases and Mental Health. Published 8 July 2026. who.int
Two-page WHO brief addressing rehabilitation as an essential component of burn mass casualty incident response. Covers assessment tools, team composition, and early intervention principles for rehabilitation in mass burns scenarios. Useful resource for UK MTC and regional burn network major incident planners.
JESIP Joint Doctrine Version 4 Review Consultation Closed 5 July 2026
JESIP. jesip.org.uk/doctrine-review
The JESIP call for evidence for Joint Doctrine Version 4 has now closed. A published Evidence and Gap Analysis Report will follow; Version 4 is planned for May 2027. Current doctrine remains Version 3.1. UK NHS MTCs operating within JESIP-coordinated incident frameworks (MCI, major incidents) should note that Version 4 will update the Joint Decision Model, M/ETHANE, and multi-agency structures. No action required now; watch for the consultation draft in 2027.
10 — ACTION POINTS
| 1 | MHP review: Circulate SWiFT and TOWAR results to your MTC trauma and haematology leads. Review whether whole blood procurement is planned or has been adopted at your centre, in light of two phase 3 RCTs showing no survival benefit over component therapy. |
| 2 | TXA perioperative protocols: Update any local protocol that references the “expected moderate blood loss” threshold for TXA eligibility — this has been removed from NICE QS138 (February 2026). Notify your anaesthetic and surgical teams. |
| 3 | MHRA cobalt-chrome hip alert: Ensure your orthopaedic implant registry is reviewed for patients with cobalt-chrome modular neck hip replacements. Confirm your follow-up surveillance protocol for this implant type is in place. Report adverse reactions via Yellow Card. |
| 4 | BOA BOAST — arterial injuries: Read the new BOAST with BAPRAS and Vascular Society co-authorship. Confirm your MTC has a one-hour revascularisation pathway for arterial injuries with musculoskeletal trauma, including a 24/7 vascular surgery and IR on-call mechanism. |
| 5 | Flail chest RA audit: Review the proportion of flail chest patients receiving regional anaesthesia within 24 hours at your centre. Target should be the majority of eligible patients. If below 50%, discuss an RA pathway with thoracic and regional anaesthetic leads. |
| 6 | Compartment syndrome in obtunded patients: Ensure your trauma surgery team uses compartment pressure monitoring (not just clinical symptoms) in all intubated/sedated patients with tibial diaphyseal fractures. Include as an explicit step in your post-operative orthopaedic handover proforma. |
| 7 | SHOT 2025: Share SHOT 2025 key figures with your major haemorrhage protocol team. Confirm Infected Blood Inquiry Transfusion Safety Standards are incorporated into your hospital’s transfusion governance plan. |
CORE REVISION — ISSUE 6 — SEPTEMBER 2026
Penetrating Trauma
Ballistic and stab injuries: assessment, haemorrhage control, damage control decision-making, vascular injury
Learning goal: Apply a structured ABCDE approach to penetrating trauma; understand the physiology of ballistic vs stab mechanisms; select appropriate haemorrhage control strategy; identify vascular injury signs and apply the new BOA BOAST arterial injury standard; make evidence-based damage control surgery decisions.
1. MECHANISMS: BALLISTIC VS STAB
| FEATURE | BALLISTIC (FIREARMS) | STAB (KNIFE/IMPLEMENT) |
|---|---|---|
| Energy transfer | High kinetic energy — cavitation, tissue destruction beyond direct path | Low velocity — direct tissue laceration, minimal cavitation |
| Injury pattern | Unpredictable tract; fragmentation; secondary projectiles; blast component with explosive rounds | Predictable tract; trajectory follows instrument path; depth depends on force and implement length |
| Cavitation | Temporary (high-velocity) and permanent cavities; solid organs and muscle most affected | Minimal; permanent cavity only (blade width) |
| Vascular injury risk | High; can injure vessels remote from direct tract via blast effect | Directly follows blade path; named vessels at risk based on trajectory |
| Contamination | Clothing, bone fragments, projectile fragments in wound | Usually lower contamination; bowel injuries still cause peritoneal contamination |
| Imaging | CT trauma series mandatory; radiopaque markers over wounds on plain film if needed; do not assume trajectory from entry/exit | Chest/abdominal CT in haemodynamically stable patients; FAST in unstable |
2. IMMEDIATE ASSESSMENT: ABCDE APPROACH
| STEP | KEY ASSESSMENT | ACTION |
|---|---|---|
| A | Airway injury — neck zone; tracheal deviation; stridor; subcutaneous emphysema; haemoptysis | RSI if compromised; avoid neck pressure; direct laryngoscopy/surgical airway if needed. Do NOT apply cervical collar routinely to penetrating neck injury. |
| B | Tension pneumothorax; open chest wound; haemothorax; tracheal injury | Needle decompression/finger thoracostomy; chest seal for open wounds; chest drain; urgent thoracotomy if massive haemothorax |
| C | External haemorrhage; signs of haemoperitoneum; pelvic instability; junctional wounds (neck, groin, axilla); hard/soft signs of vascular injury | Direct pressure, wound packing, tourniquet proximal; FAST ± CT angiography; TXA early; activate MHP |
| D | GCS; focal neurology; spinal injury signs (flaccidity, priapism, sensory level) | CT head ± spine; neurosurgical referral; do not delay haemorrhage control for neuro imaging in instability |
| E | Full exposure; log roll; mark entry/exit wounds (not probed); rectal examination for posterior rectal injury; inspect perineum and genitalia | Document all wounds; do not remove impaled objects in ED; cover wounds; warm patient |
3. HAEMORRHAGE CONTROL PRIORITIES
| SITE | STRATEGY | KEY POINTS |
|---|---|---|
| Extremity | Tourniquet (pneumatic preferred); wound packing with haemostatic dressings; pressure dressing | Tourniquet proximal to wound; document time applied; reassess at 2 hours. Do not remove in prehospital setting once applied. |
| Junctional (groin, axilla, neck) | Wound packing; junctional tourniquet (JETT/SAM JT); manual compression; TXA; IR/operative haemostasis | No circumferential tourniquet applicable; haemostatic packing is primary control. Direct to hybrid theatre or IR rapidly if not controlled. |
| Torso (chest) | Chest drain; resuscitative thoracotomy (EDT/REBOA) if indicated; direct haemostasis in theatre | EDT indications: penetrating injury with witnessed cardiac arrest or <15 min CPR, arrival with signs of life. Spinal needle for cardiac tamponade temporisation (pericardiocentesis). |
| Torso (abdomen) | FAST; damage control laparotomy; packing; vascular control at root of mesentery; temporary abdominal closure | Penetrating injury with haemodynamic instability: straight to theatre, no time for CT if FAST positive. Selective CT in stable penetrating abdominal trauma. |
| Neck | Zone-based approach (Zones I–III); wound packing; CTA for zone III and selected zone I/II; operative or IR depending on zone and vessel | Zone I (<clavicles): IR preferred or sternotomy. Zone II (clavicles to angle of mandible): direct operative access. Zone III (>angle): IR preferred; operative access difficult. |
4. VASCULAR INJURY — NEW BOA BOAST STANDARD (JUNE 2026)
| SIGN TYPE | SIGNS | ACTION |
|---|---|---|
| Hard signs of vascular injury | Absent/diminished distal pulse; active haemorrhage; expanding haematoma; thrill or bruit; signs of acute limb ischaemia (6Ps) | Immediate operative intervention; CTA only if it will not delay revascularisation beyond 1 hour (new BOAST standard) |
| Soft signs | Small stable haematoma; proximity of wound to named vessel; neurological deficit; reduced (not absent) ABI (<0.9) | CTA mandatory; observe; serial vascular examination |
| Target | Revascularisation within 1 hour of diagnosis (BOA BOAST / NCEPOD standard) | Warm ischaemia time >6 hours: high amputation risk. Fasciotomy prophylactically in all revascularisations >4 hours ischaemia. |
5. DAMAGE CONTROL SURGERY IN PENETRATING TRAUMA
| INDICATION FOR DCS | RATIONALE |
|---|---|
| Temperature <35°C + pH <7.2 + coagulopathy (the “lethal triad”) | Physiological derangement limits ability to achieve definitive haemostasis; DCS + ICU resuscitation then relook |
| Haemodynamic instability despite initial resuscitation | Damage control: stop bleeding, limit contamination, close/pack, return to ICU |
| Cannot achieve haemostasis within reasonable timeframe (<90 min) | Protracted surgery increases physiological debt; staged repair preferable |
| Multiple concurrent life-threatening injuries requiring prioritisation | Address most immediately life-threatening injury; defer non-critical repairs |
Key principle (from this month’s Injury paper): DCS is NOT a default for all penetrating trauma. In haemodynamically stable patients with an isolated, technically manageable penetrating injury, definitive repair is preferable. DCS carries its own morbidity: abdominal compartment syndrome, planned relook complications, prolonged critical care. Select DCS on physiology, not reflex.
6. PENETRATING NECK INJURY — SPECIFIC CONSIDERATIONS
| ZONE | ANATOMY | ACCESS STRATEGY |
|---|---|---|
| Zone I | Below clavicles to cricoid; major vessels, trachea, oesophagus, lung apices | IR ± sternotomy/clavicle resection; complex exposure |
| Zone II | Cricoid to angle of mandible; carotid arteries, jugular veins, larynx, oesophagus | Direct operative: standard neck exploration; most accessible zone |
| Zone III | Above angle of mandible to skull base; distal ICA, vertebral arteries, cranial nerves | IR preferred; operative access requires extensive approaches (mandible subluxation, skull base) |
Airway assessment is priority in all penetrating neck injuries. CTA of neck and chest in all haemodynamically stable patients. Do NOT apply cervical collar routinely — penetrating mechanism does not generate axial loading (per Emergency Medicine Australasia 2026 evidence; see Quick Hits section).
FRCS / Final FRCA revision points: Know the zones of the neck and their operative access implications. Know the hard/soft signs of vascular injury and the one-hour revascularisation target (new BOA BOAST standard). Know the lethal triad and DCS decision criteria. Know EDT indications: penetrating trauma with witnessed cardiac arrest or <15 min CPR with signs of life on arrival. REBOA is an adjunct to, not a replacement for, haemorrhage control surgery. Fasciotomy: prophylactic after revascularisation with >4 hours warm ischaemia; compartment pressure measurement is mandatory in obtunded patients (see this month’s Injury paper on ACS risk in obtunded tibial fracture patients).
Major Trauma Evidence Rundown — Issue 6 — September 2026 — emevidence.org
This newsletter is produced monthly. Archive access: All previous issues are available at emevidence.org. To provide feedback, submit a correction, or update your subscription, use the link at the bottom of this email. Evidence summaries reflect the published literature at the time of compilation and are intended for educational purposes only. Nothing in this publication constitutes clinical advice for individual patients. Feedback form
Major Trauma Evidence Rundown — Issue 6 — September 2026 Authored by Jake Turner, ST6 Emergency Medicine. Curated with the assistance of AI (Perplexity). All content editorially reviewed. emevidence.org — Major Trauma Evidence Rundown — ISSN pending
This newsletter is intended for qualified healthcare professionals. It is educational in nature and does not constitute clinical guidance. Evidence summaries reflect the literature as at September 2026. Always apply clinical judgement and follow local protocols.