15.1 Falls, Frailty and Multimorbidity
Key Takeaways
- Falls risk in older adults is multifactorial: strength, balance, vision, medications, environment, cognition, footwear, and continence all interact—single-factor exercise alone is rarely enough when risk is high.
- Frailty is a clinical syndrome of reduced physiological reserve; goals should prioritise function, safety, and participation, avoiding both under-challenge (accelerating decline) and over-challenge (injury, fear, deconditioning after setbacks).
- Australian community and aged-care settings require setting-specific reasoning: home hazards, carer capacity, residential care policies, and escalation pathways differ from acute wards.
- Multimorbidity means competing priorities—choose interventions that deliver shared benefit (e.g., progressive strength + balance training) rather than treating every diagnosis in isolation.
- Screen, stratify, and review: document falls history, near-misses, fear of falling, and change after intervention; escalate red flags (syncope, new neuro deficit, acute illness) rather than ‘exercise through’ instability.
Quick Answer: Treat older-adult falls as multifactorial (strength, balance, vision, meds, environment, cognition, continence, acute medical triggers)—not ‘weak ankles only.’ Dose challenge between under-challenge (accelerates decline) and over-challenge (injury/setbacks). Prefer progressive strength + balance + environment/carer plans + medical liaison, matched to Australian community, residential aged care, subacute, and acute settings.
Gerontology is embedded across the APC Written Assessment clinical areas rather than examined as a separate ‘geriatrics paper’. Expect vignettes in which an older adult presents with a musculoskeletal, cardiorespiratory, or neurological problem—and the safe answer depends on falls risk, frailty, multimorbidity, medications, cognition, and the setting (community, residential aged care, subacute, or acute). You are not expected to replace a geriatrician. You are expected to recognise multifactorial risk, set frailty-informed goals, avoid under- and over-challenge, and plan physiotherapy that is realistic for Australian community and aged-care contexts.
Why Age Alone Is Not the Assessment
Chronological age is a crude filter. A 68-year-old elite masters athlete and a 68-year-old with severe frailty, polypharmacy, and recurrent falls are not the same patient. APC-style reasoning starts from function, reserve, and risk, not from a birthday. Still, population risk rises with age: sarcopenia, sensory decline, multimorbidity, and medication burden accumulate. Your job is to map modifiable contributors and choose interventions that improve capacity without creating new harm.
| Person type (example) | What ‘standard rehab’ can miss | Better physio frame |
|---|---|---|
| Robust community walker | Under-dosing; fear language that shrinks activity | Progressive load, participation goals |
| Moderately frail with OA + HF | Competing priorities; one-diagnosis tunnel vision | Shared-benefit strength/balance + medical liaison |
| Severely frail post-hospital | Over-challenge or permanent bed rest extremes | Supervised functional goals, slow progression, rest buffers |
| Cognitive impairment + falls | Complex dual-task circuits without safety plan | Simple cues, supervision, environment, carer partnership |
Multifactorial Falls Risk: The Physiotherapy Map
A fall is an unexpected event in which the person comes to rest on the ground, floor, or lower level. For assessment purposes, also capture near-misses, stumbles, and fear of falling—these predict activity restriction and further deconditioning.
| Domain | Clinical cues | Physiotherapy actions |
|---|---|---|
| Strength and power | Slow sit-to-stand, needs arms to rise, weak hip/knee extensors, slow gait | Progressive lower-limb resistance; sit-to-stand practice |
| Balance and postural control | Unsteady turns, poor reactive steps, dual-task failure | Challenge static → dynamic → dual-task with spotting |
| Vision | Cataracts, multifocal lenses on stairs, poor contrast | Note limits; lighting/stair advice; refer eye care |
| Medications | Sedatives, antipsychotics, antihypertensives, opioids, polypharmacy | Orthostatic BP when indicated; medical/GP liaison |
| Environment | Clutter, mats, wet bathroom, missing rails, poor night lighting | Hazard advice; OT/home-mod pathways |
| Cognition | Poor hazard insight, dual-task crashes, memory for precautions | Simplify cues; raise supervision; carer strategies |
| Continence / urgency | Night toileting rushes | Timed voiding themes; night path lighting; aid access |
| Footwear | Slippers, worn soles, high heels | Stable, fitted footwear education |
| Acute medical triggers | Syncope, chest pain, focal neurology, fever, new confusion | Escalate—do not ‘balance class’ first |
1. Strength and power. Lower-limb weakness (especially hip extensors, knee extensors, ankle plantarflexors and dorsiflexors) reduces recovery steps after a trip. Sit-to-stand difficulty, slow gait speed, and inability to rise from a chair without arms are high-yield clinical cues.
2. Balance and postural control. Static standing, dynamic gait, dual-task performance, and reactive balance all matter. Vestibular hypofunction, peripheral neuropathy, and reduced proprioception raise risk. Do not treat ‘balance’ as only tandem stance—include turning, reaching, stepping, and dual-task walking when safe.
3. Vision. Reduced acuity, contrast sensitivity, cataracts, macular disease, and multifocal lenses (especially on stairs) contribute to trips. Physiotherapists do not prescribe spectacles, but they do note visual limitation, adjust environment recommendations, and refer appropriately.
4. Medications. Sedatives, hypnotics, antipsychotics, some antidepressants, anticholinergics, and antihypertensives (especially if causing orthostatic hypotension) increase falls risk. Opioids and polypharmacy amplify risk further. You do not deprescribe independently, but you must recognise medication contribution, measure sitting-to-standing blood pressure when orthostasis is plausible, and communicate concerns to the medical team or GP.
5. Environment. Clutter, loose mats, poor lighting, uneven outdoor paths, missing grab rails, wet bathroom floors, and inappropriate footwear are classic Australian home and facility hazards. In residential aged care, shared bathrooms, long corridors, and night-time toileting journeys matter.
6. Cognition. Attention, executive function, insight, and memory affect safety with dual-task walking, adherence to precautions, and recognition of hazards. Mild cognitive impairment and dementia change cueing strategies and supervision needs.
7. Continence and urgency. Rushing to the toilet—especially at night—is a frequent fall mechanism. Timed voiding education and night lighting may be as relevant as heel raises.
8. Cardiovascular and neurological acute triggers. Syncope, arrhythmia, TIA/stroke, vestibular acute attack, and acute infection (including urinary tract infection and pneumonia) can present as ‘a fall’. New unexplained falls with syncope, chest pain, severe headache, focal neurology, or systemic illness are medical escalation, not a balance-class booking.
High-value history questions: number of falls in 12 months, circumstances (trip, slip, blackout, dizziness), injuries, fear of falling, activity restriction, recent medication changes, footwear, home layout, and carer support. Simple performance tests commonly used in practice include gait speed, timed up-and-go (TUG), sit-to-stand tests, and functional reach or four-stage balance—interpret alongside clinical context, not as standalone pass/fail labels.
Frailty: Reduced Reserve, Different Goals
Frailty is a state of increased vulnerability to stressors due to cumulative decline across physiological systems. Clinically you may see slow gait, weakness, exhaustion, low physical activity, and unintentional weight loss (phenotype concepts), or accumulated deficits across multiple domains (deficit accumulation). For physiotherapy, the operational message is: the same ‘standard’ load may be under-dosed for a robust older adult and dangerously over-dosed for a frail person with recent illness.
Frailty-informed goals emphasise:
- Meaningful function (toilet transfers, outdoor walking to the letterbox, standing for meal preparation) over arbitrary gym metrics alone
- Reserve building through progressive resistance and balance training when medically appropriate
- Recovery buffers—plan rest, nutrition liaison, and slower progression after infection, hospitalisation, or fracture
- Shared decision-making with the person and carers about risk tolerance (e.g., supervised outdoor walking vs wheelchair for community access)
| Error | What it looks like in a stem | Better choice |
|---|---|---|
| Under-challenge | ‘Gentle walks only forever’; bed rest to prevent falls; passive ROM only | Progressive supervised strength/balance matched to capacity |
| Over-challenge | Unsupervised dual-task obstacle course day 1 post-delirium; maximal plyometrics in severe frailty | Spotter, criteria-based progress, rest buffers |
| Diagnosis silos | Separate OA, HF, and falls plans that conflict | Shared-benefit interventions + priority sequencing |
Avoid under-challenge: prolonged bed rest, ‘gentle walks only forever’, and fear-driven immobilisation accelerate sarcopenia, orthostatic intolerance, and falls risk. Avoid over-challenge: maximal high-impact protocols without strength base, unsupervised dual-task obstacle courses in severe frailty, or ignoring orthostatic symptoms ‘to push through’. Optimal dosing is progressive, monitored, and reviewed.
Multimorbidity: One Person, Many Labels
Older adults often carry osteoarthritis, osteoporosis, heart failure, COPD, diabetes, depression, and cognitive change simultaneously. Multimorbidity reasoning rules for APC cases:
- Identify dominant limiting factors today (e.g., acute delirium vs chronic OA knee pain).
- Prefer interventions with cross-cutting benefit (progressive lower-limb strength training helps falls risk, OA function, and deconditioning).
- Sequence safety first: unstable ACS symptoms trump elective OA loading; acute infection may pause high-intensity training.
- Watch for competing risks—aggressive diuresis may worsen orthostatic falls; pain opioids may dull attention.
- Coordinate with the team; do not invent medical diagnoses, but do escalate red flags.
Australian Community and Aged-Care Settings
Community / home-based care. Assessment includes home hazards, equipment (rails, shower chairs, frames), carer capacity, and realistic homework. Programs should be simple enough for adherence. Falls prevention evidence supports multicomponent exercise (strength + balance) and environmental review; group programs (where available) can support social participation if transport and cognition allow.
Residential aged care. Goals often centre on safe transfers, supervised walking, contracture prevention, pressure-care mobility, and meaningful activity within facility policies. Equipment, staffing ratios, and after-hours risk (toileting) shape plans. Document communication with nursing staff about supervision levels and footwear.
Subacute / rehab / transition care. Post-hospital deconditioning is common. Rebuild gait endurance and strength while addressing the reason for admission (fracture, pneumonia, delirium). Discharge planning must address home setup and carer training—not only ‘walked 50 m with frame’ on a flat ward corridor.
Acute care. Early mobilisation is protective against deconditioning and hospital-acquired decline, but only within medical stability, falls precautions, and line/drain constraints. Screen for delirium risk and orthostatic hypotension before first sit-to-stand attempts.
| Setting | High-yield APC focus |
|---|---|
| Community / home | Hazards, carer capacity, simple home program, GP liaison |
| Residential aged care | Supervision levels, night toileting risk, staff communication |
| Subacute / transition | Rebuild capacity + real-world discharge tasks |
| Acute ward | Early graded mobility within medical stability |
Intervention Priorities (Entry-Level)
- Progressive resistance training for major lower-limb groups, 2–3 days/week when safe, with form and pain monitoring.
- Balance training that challenges the person’s actual deficits (static → dynamic → dual-task), with spotter support as needed.
- Gait retraining and aid prescription when indicated (frame, stick, supervision)—aids can reduce risk if fitted and used correctly, or increase risk if mismatched.
- Environmental and footwear advice within scope; refer OT/home modification pathways as needed.
- Education on rising slowly, night lighting, glasses use on stairs, and when to seek medical care after a fall with head strike or inability to get up.
- Team communication on medications, vision, continence, bone health, and cognition.
Fear of falling deserves explicit attention: activity avoidance leads to deconditioning, which raises future fall risk. Graded exposure, successful practice, and confidence-building tasks sit alongside strength work—not instead of it.
Red Flags and Escalation (Do Not Miss)
Escalate urgently for: loss of consciousness, new focal neurology, chest pain/dyspnoea suggestive of ACS or PE, severe head injury after fall, inability to weight-bear with suspected fracture, acute confusion with systemic signs, or recurrent unexplained syncope. Physiotherapy continues to have a role after medical stabilisation—not as a substitute for it.
APC Exam Lens and Common Traps
When a vignette describes an 82-year-old with two falls, polypharmacy, multifocal glasses, weak sit-to-stand, and fear of leaving home, the best answer is rarely ‘high-intensity plyometrics’ or ‘rest until completely safe forever’. Prefer multifactorial assessment, progressive strength and balance, environment and carer plans, and medical liaison for meds/orthostasis.
| Trap | Why it fails |
|---|---|
| Single-factor ankle proprioception only | Misses meds, vision, environment, power |
| Bed rest to ‘eliminate falls’ | Accelerates sarcopenia and orthostatic risk |
| Ignoring blackout/chest pain fall story | Misses cardiac/syncope emergency |
| Unsupervised advanced dual-task day 1 in severe frailty | Over-challenge and injury risk |
| Treating each comorbidity as a separate gym plan | Competing loads; poor adherence |
Closing Exam Anchor
Falls = multifactorial map; frailty = dose between under- and over-challenge; multimorbidity = shared-benefit priorities; setting = Australian home, facility, subacute, or acute realities; red-flag falls = escalate first.
An 84-year-old living alone has had three falls in six months. Assessment shows slow sit-to-stand, unsteady turning, multifocal glasses used on stairs, five regular medications including a night sedative, and cluttered walkways at home. Which approach best reflects multifactorial falls-risk management?
A frail older adult in residential aged care has low activity tolerance, recent hospitalisation, and fear of falling. Which goal-setting approach is most appropriate?
During a first community visit, an older adult reports that the last ‘fall’ was associated with brief blackout and chest tightness. What is the most appropriate immediate physiotherapy decision?
Which statement best distinguishes under-challenge from over-challenge in an older adult with multimorbidity and moderate falls risk?
An older adult with knee osteoarthritis, mild heart failure, and two recent falls is referred for physiotherapy. Which plan best reflects multimorbidity reasoning?