Last month, the British Geriatrics Society held its first conference ever dedicated entirely to major trauma in older people, and later this month the World Falls Congress convenes in Manchester. That two major scientific meetings in a single summer are devoted to falls and injury in the older patient tells you something the trauma community has been slow to internalise: the centre of gravity of major trauma has moved, and our triage systems, our trauma team activation criteria, and arguably the mental model taught on every ATLS course have not moved with it.
Here is the uncomfortable thesis of this post. The archetypal trauma patient - the young man pulled from a wrecked car, hypotensive and tachycardic, the patient around whom the primary survey, the trauma team activation call, and decades of trauma system design were constructed - is no longer the typical major trauma patient in the United Kingdom or in most high-income countries. The typical major trauma patient is in their late seventies or eighties, has fallen less than two metres, is taking a beta-blocker and an anticoagulant, and arrives with vital signs that look reassuringly normal. And the evidence increasingly suggests that our systems are failing this patient at the very first decision point: triage.
The patient ATLS was built for
ATLS was conceived in 1976 after James Styner's light aircraft crashed in a Nebraska cornfield, injuring his young family. The course that grew from that event was designed for high-energy transfer injury: road traffic collisions, falls from height, penetrating wounds. Its physiological logic - the haemorrhagic shock classes, the significance of tachycardia and hypotension, the expectation that injury severity announces itself through deranged vital signs - was calibrated to young patients with robust compensatory reserve and predictable decompensation curves.
Trauma systems followed the same paradigm. Prehospital triage tools in most networks weight mechanism of injury heavily: ejection from a vehicle, death of another occupant, fall from over two metres, entrapment. Physiological criteria - systolic blood pressure below 90 mmHg, GCS below 14, respiratory compromise - complete the picture. A patient who meets these criteria is taken to a major trauma centre and met by a full trauma team. A patient who does not is taken to the nearest trauma unit and seen, often, by a junior doctor in the majors area. The architecture is rational, evidence-informed, and built around a casualty who is becoming a statistical minority.
The patient who actually arrives
The data shift was documented more than a decade ago and has only accelerated. Analysis of the Trauma Audit and Research Network (TARN) database showed that by 2013 the average age of major trauma patients in England and Wales was approaching 60, with the over-75s on course to become the single largest group, and low falls - not road traffic collisions - the predominant mechanism of injury [1]. TARN's landmark 2017 report, Major Trauma in Older People, based on 8,176 severely injured patients aged 60 and over, made the point bluntly: the typical major trauma patient is no longer young and male but older, injured by a fall from standing height, with traumatic brain injury the commonest cause of death [2].
Subsequent national data sharpened the picture. Between 2012 and 2017, falls from under two metres accounted for 57.8% of all TARN-eligible trauma admissions in England - the commonest mechanism across the entire system, not merely among the old [3]. By 2019, low falls made up 53.6% of patients with an Injury Severity Score above 15, with a median age of 80 in that group [4]. Crucially, the same national analysis showed where these patients end up: those treated exclusively in trauma units or local emergency hospitals had a median age of 72, and among the over-65s in that cohort, 86.9% had fallen from less than two metres [3]. The sickest demographic in the system is concentrated, structurally, in the hospitals with the least trauma infrastructure.
It is worth pausing on the irony. This spring's headlines about trauma epidemiology were dominated by an NYU study in Neurosurgery showing surging e-bike and e-scooter injuries - dramatic, novel, and mechanistically familiar [5]. Meanwhile the quiet, unglamorous epidemic of the octogenarian on the kitchen floor continues to dwarf it numerically, and attracts a fraction of the attention.
Why the primary survey's vital signs lie in the older patient
The deeper problem is not epidemiological but physiological. The triage criteria that gatekeep trauma team activation assume that serious injury produces measurable derangement. In older patients, that assumption fails on multiple fronts.
First, the ageing myocardium mounts a blunted chronotropic response, and beta-blockade - present in a substantial proportion of patients over 75 - suppresses the tachycardia that triage tools rely on. Second, baseline hypertension resets the goalposts: a systolic pressure of 110 mmHg may represent profound relative hypotension in a patient who lives at 170 mmHg, yet it will not trigger a single physiological criterion. The conventional teaching that a systolic below 90 defines hypotension is dangerously miscalibrated for this group, and several authors have argued the threshold for concern in older trauma patients should sit at 110 mmHg or higher. Third, GCS assessment is confounded by pre-existing cognitive impairment, and conversely a 'normal' GCS provides false reassurance in a patient whose atrophic brain can accommodate a substantial subdural haematoma before consciousness declines - particularly relevant given that traumatic brain injury is the leading cause of trauma death in this group [2].
The result is what the TARN report called a needle-in-a-haystack problem [2]. Low falls in older people are extraordinarily common and the vast majority cause no major injury, so clinicians anchor on the single obvious injury - the hip fracture, the wrist - and do not think 'major trauma'. The mechanism does not impress, the observations do not alarm, and the trauma call is never put out.
The undertriage evidence: how big is the miss?
Recent prospective data suggest the miss is very large indeed. A multicentre observational study across twelve Level 1 trauma centres in Germany and Switzerland, published in 2025, compared triage decisions against consensus trauma team activation criteria. Among 3,753 trauma patients, 36.5% were aged 70 or over. Trauma teams were activated for just 15.8% of geriatric patients against 31.8% of younger patients, despite comparable injury severity, and post-hoc analysis found that 53.8% of geriatric patients who warranted trauma team care were undertriaged. Mortality within 48 hours was more than three times higher in the older cohort [6].
Swiss prehospital data tell the same story from the ambulance service's perspective: an observational cross-sectional study in western Switzerland found systematic prehospital undertriage of older injured patients, with age itself appearing to bias destination decisions independent of injury severity [7]. UK data add the structural dimension already noted - older major trauma patients are far less likely to reach a major trauma centre at all, are less likely to be transferred once admitted elsewhere, and wait longer for imaging and senior review [2, 3]. If a 25-year-old with an ISS of 25 received this pathway, it would be a serious untoward incident. For an 85-year-old, it is Tuesday.
There is also a workforce dimension that rarely features in the triage debate. Because older patients are disproportionately routed away from major trauma centres, the clinicians who most often receive the highest-risk trauma demographic are emergency physicians and orthogeriatricians in trauma units - not the trauma teams the system was designed around. Whatever one's view of where these patients should go, the training implication is unavoidable: every clinician who assesses an older faller is, statistically, a front-line major trauma clinician, whether or not their job title says so.
The counterargument: lowering the threshold may not be the answer
Before concluding that every older faller should trigger a trauma call, the opposing case deserves a fair hearing - because it is stronger than the undertriage literature alone suggests.
First, the arithmetic of overtriage. Falls from standing in the elderly are among the commonest presentations in emergency medicine. Activating a full trauma team for each would be operationally impossible and would dilute the resource for everyone; TARN itself acknowledged that universal activation for low falls is not feasible [2]. Sensitivity bought at the price of catastrophic specificity is not a triage system; it is the absence of one.
Second, the destination question is genuinely unsettled. In the English national data, mortality among patients treated solely in trauma units was actually lower than among those treated solely in major trauma centres (6.7% versus 8.9%) [3]. This is heavily confounded - sicker patients go to MTCs - but a separate TARN analysis of low falls found no clear survival advantage from MTC care for this mechanism, raising the possibility that what older trauma patients need is not necessarily a different building, but a different response within whatever building they reach.
Third, and most provocatively, the FiTR programme of national studies suggested that frailty, not chronological age, is the dominant prognostic variable in older trauma patients, and that a geriatrician assessment within 72 hours of admission was associated with substantially reduced inpatient mortality [8]. If outcome is driven more by frailty-attuned inpatient care than by the speed of the initial trauma call, then the undertriage debate - fought entirely at the front door - may be aiming at the wrong target. The most cost-effective intervention in geriatric trauma might be a geriatrician on the ward round rather than a consultant surgeon in the resus bay.
The honest synthesis is that both framings carry weight. Undertriage delays time-critical interventions - particularly for the intracranial haemorrhage that kills most of these patients - and no amount of excellent ward-based care rescues a patient whose subdural was found twelve hours late. But reflexively importing the high-energy activation model into low-energy trauma would trade one failure mode for another.
Age, frailty, or physiology? The contested fixes
Three families of solution are competing in the literature. The first is age-based criteria: several North American systems have trialled automatic trauma activation or step-up above a threshold age (often 65 or 70), sometimes combined with anticoagulant use. These improve sensitivity but at significant overtriage cost, and studies of geriatric-specific activation guidelines show that undertriage persists even after their introduction [9]. The second is recalibrated physiology: age-adjusted hypotension thresholds and the shock index (heart rate divided by systolic blood pressure), which outperforms raw vital signs in older patients, though it remains vulnerable to the same pharmacological confounders. The third is frailty-based triage - embedding tools such as the Clinical Frailty Scale at the front door - which aligns with the FiTR evidence but asks prehospital crews and triage nurses to score something that is genuinely difficult to assess in a corridor at 3 a.m.
None of these has won. That is precisely what makes this a live controversy rather than a settled chapter: the dominant patient in the trauma system is the one for whom we have the least validated triage science. ATLS, to its credit, has progressively expanded its teaching on trauma in older adults, emphasising diminished reserve, medication effects and the deceptive stability of the elderly casualty - but a chapter acknowledging the problem is not the same as a system solving it. Candidates should verify the current edition's specific guidance against the course manual itself, as emphasis shifts between editions.
What this means for your ATLS exam
For examination purposes, the principles below are high-yield and stable across recent editions, but always reconcile them with your current course manual.
Recognise occult shock. Expect questions where an older patient has 'normal' observations after trauma. Know that ageing and beta-blockade blunt tachycardia, that baseline hypertension masks relative hypotension, and that a systolic of 100–110 mmHg in an elderly patient should be treated as hypotension until proven otherwise. Lactate and base deficit are valuable for unmasking hypoperfusion when vital signs deceive.
Respect the mechanism paradox. A fall from standing height is a low-energy mechanism but is the commonest cause of major trauma death in older adults, with traumatic brain injury the leading killer. A ground-level fall in a patient over 65 - especially on anticoagulation - warrants a low threshold for CT head and cervical spine imaging and for senior involvement.
Apply the primary survey unchanged, interpret it differently. The xABCDE sequence does not change with age; the thresholds for concern do. Reduced respiratory reserve makes rib fractures disproportionately lethal; three or more rib fractures in an older patient is a marker for high-dependency care and aggressive analgesia. Decreased physiological reserve means earlier escalation, not watchful waiting.
Know the system-level facts. Examiners increasingly expect awareness that older adults are the largest major trauma demographic in high-income systems, that undertriage of this group is common, and that frailty assessment and early geriatrician involvement improve outcomes. If asked what single factor best predicts outcome in an older trauma patient, frailty is a better answer than age.
The deepest lesson, though, is conceptual. ATLS teaches you to treat the greatest threat to life first. In 2026, the greatest threat to life in your trauma system may be the bias built into the system itself - the quiet assumption, encoded in every activation criterion and every mental shortcut, that major trauma looks like a young man in a crashed car. It increasingly looks like your grandparent. Train your pattern recognition accordingly.
References
1. Kehoe A, Smith JE, Edwards A, Yates D, Lecky F. The changing face of major trauma in the UK. Emergency Medicine Journal. 2015;32(12):911–915. doi:10.1136/emermed-2015-205265. https://pmc.ncbi.nlm.nih.gov/articles/PMC4717354/
2. Trauma Audit and Research Network (TARN). Major Trauma in Older People — England & Wales Report. 2017. https://www.gmccmt.org.uk/wp-content/uploads/2019/11/Major-Trauma-in-Older-People-2017-1.pdf
3. Dixon JR, Lecky F, Bouamra O, et al. Age and the distribution of major injury across a national trauma system. Age and Ageing. 2020;49(2):218–226. doi:10.1093/ageing/afz151. https://academic.oup.com/ageing/article/49/2/218/5639746
4. Kehoe A, et al. Comparative analysis of English and Welsh major trauma patients injured by high versus low energy transfer mechanisms in 2019 . medRxiv. 2025. doi:10.1101/2025.06.30.25330560. https://www.medrxiv.org/content/10.1101/2025.06.30.25330560v1
5. Weiss H, Huang PP, et al. Micromobility-related neurotrauma at an urban Level 1 trauma centre. Neurosurgery. 2026. NYU Langone Health press summary, April 2026. https://nyulangone.org/news/e-bike-and-scooter-crashes-are-leading-more-brain-injuries
6. Koch DA, Becker L, Schweigkofler U, et al. Undertriage in geriatric trauma: insights from a multicentre cohort study. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 2025;33. doi:10.1186/s13049-025-01432-0. https://pmc.ncbi.nlm.nih.gov/articles/PMC12247425/
7. Poncet C, Carron PN, Darioli V, Zingg T, Ageron FX. Prehospital undertriage of older injured patients in western Switzerland: an observational cross-sectional study. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 2024;32(1):100. doi:10.1186/s13049-024-01271-5. https://pmc.ncbi.nlm.nih.gov/articles/PMC11462677/
8. Carter B, Hewitt J, et al. FiTR studies: frailty and clinical outcomes in older people admitted with serious injury in England - national multicentre observational studies. The Lancet Healthy Longevity. 2022. https://www.sciencedirect.com/science/article/pii/S2666756822001222
9. Anantha RV, Painter MD, Diaz-Garelli F, et al. Undertriage despite use of geriatric-specific trauma team activation guidelines: who are we missing? The American Surgeon. 2021;87(3):419–426. doi:10.1177/0003134820951450. https://pubmed.ncbi.nlm.nih.gov/33026234/
10. British Geriatrics Society. Major Trauma in Older People conference, 19 May 2026; World Falls Congress, Manchester, 24–26 June 2026. https://www.bgs.org.uk/26MT