Residency · Residency · Family Medicine
Falls Prevention and Mobility Assessment
Introduction
Falls are the leading cause of injury-related morbidity and mortality in adults aged 65 and older. Approximately one in four older adults falls each year, and falls account for over 3 million emergency department visits and 36,000 deaths annually in the United States. Family physicians are ideally positioned to screen for fall risk, conduct multifactorial assessments, and implement evidence-based prevention strategies.
Epidemiology
Approximately 30% of community-dwelling adults over 65 fall each year, rising to 50% of those over 80. Half of all falls result in injury, and 10% result in serious injury such as fracture or head trauma. Hip fractures carry a one-year mortality rate of 20 to 30%. Falls are the leading cause of traumatic brain injury in older adults. Direct medical costs of falls exceed $50 billion annually. Fear of falling leads to activity restriction, deconditioning, social isolation, and paradoxically more falls.
Risk Factors
Intrinsic Factors
Gait and balance impairment is the strongest modifiable predictor. Muscle weakness, particularly in the lower extremities, contributes significantly. Visual impairment from cataracts, macular degeneration, or glaucoma increases risk, as do cognitive impairment and dementia, orthostatic hypotension, peripheral neuropathy, foot disorders (bunions, calluses, ill-fitting footwear), urinary incontinence and urgency (rushing to the bathroom), and depression and anxiety.
Extrinsic Factors
Medications are a major extrinsic factor, particularly benzodiazepines, opioids, anticholinergics, antihypertensives, and psychotropics, with the use of four or more medications increasing fall risk. Environmental hazards include loose rugs, poor lighting, cluttered pathways, lack of grab bars, and uneven surfaces. Inappropriate footwear with slippery soles, high heels, or backless designs also contributes.
Situational Factors
Acute illness (infections, dehydration, metabolic derangements), recent hospitalization or prolonged immobility, and alcohol use are situational factors.
Screening
USPSTF and AGS/BGS Recommendations
All adults aged 65 and older should be asked annually: "Have you fallen in the past year?" and "Do you feel unsteady when standing or walking?" A positive screen or any fall should trigger a multifactorial fall risk assessment. The USPSTF recommends exercise interventions to prevent falls in community-dwelling adults aged 65 and older at increased risk (Grade B).
Additional Screening Tools
The Stay Independent Questionnaire is a 12-item self-report screening for fall risk factors. The Falls Efficacy Scale (FES) assesses fear of falling.
Multifactorial Fall Risk Assessment
| Test | Procedure | Abnormal Result | Interpretation |
|---|---|---|---|
| Timed Up and Go (TUG) | Rise, walk 3 m, turn, return, sit | >12 seconds | Increased fall risk |
| 30-Second Chair Stand | Count stands in 30 seconds | <8 stands | Lower extremity weakness |
| 4-Stage Balance Test | Feet together → semi-tandem → tandem → single-leg | Cannot hold tandem 10 sec | Impaired balance |
| Gait speed | Walk 4-6 m at usual pace | <0.8 m/s | Increased fall risk and adverse outcomes |
| Orthostatic vitals | BP supine → standing at 1 and 3 min | Drop ≥20 systolic or ≥10 diastolic | Orthostatic hypotension |
Gait and Balance Testing
The Timed Up and Go (TUG) test has the patient rise from a chair, walk 3 meters, turn, walk back, and sit; a time greater than 12 seconds suggests increased fall risk. The 30-Second Chair Stand Test measures lower extremity strength, with fewer than 8 stands indicating impairment. The 4-Stage Balance Test progresses through feet together, semi-tandem, tandem, and single-leg stance; inability to hold tandem for 10 seconds indicates increased risk. A gait speed less than 0.8 m/s is associated with increased fall risk and adverse outcomes.
Orthostatic Vital Signs
Blood pressure and heart rate should be measured supine, then at 1 and 3 minutes after standing. Orthostatic hypotension is defined as a drop of 20 mmHg systolic or 10 mmHg diastolic within 3 minutes of standing. Antihypertensives, diuretics, and alpha-blockers should be reviewed as contributing medications.
Vision Assessment
Visual acuity screening should be performed, with referral for ophthalmologic evaluation if impaired. Caution is warranted with new multifocal lenses, which increase fall risk during ambulation.
Medication Review
A systematic review using Beers Criteria and STOPP criteria should be performed, focusing on fall-risk-increasing drugs (FRIDs) including sedative-hypnotics, antipsychotics, opioids, anticholinergics, and antihypertensives. Deprescribing or dose reduction should occur when possible.
Neurological Assessment
Lower extremity strength, sensation (monofilament, vibration), and proprioception should be assessed. Cerebellar testing is indicated if ataxia is suspected. Cognitive screening with Mini-Cog or MoCA is important, as cognitive impairment is an independent fall risk factor.
Environmental Assessment
A home safety evaluation, ideally by occupational therapy, should address lighting, loose rugs, grab bars in bathrooms, handrails on stairs, and clutter removal.
Foot and Footwear Evaluation
Examination for deformities, calluses, nail pathology, and peripheral neuropathy should be performed, with recommendations for well-fitting, low-heeled shoes with non-slip soles.
Evidence-Based Interventions
Exercise and Physical Therapy
Exercise is the single most effective intervention for fall prevention, reducing falls by 23 to 40%. Programs should include balance training (Tai Chi reduces falls by 20 to 40%, along with standing balance exercises), strength training (lower extremity resistance exercises two to three times per week), and gait training (supervised walking programs). The Otago Exercise Program is a home-based strength and balance program with proven efficacy, delivered by physical therapy. A minimum of three months of regular exercise is needed to see benefit.
Medication Optimization
Withdrawing or reducing FRIDs when clinically appropriate is important. Gradual dose reduction of psychotropic medications reduces falls by approximately 65%. New fall-risk medications should not be initiated without weighing benefits against fall risk.
Vision Correction
Correctable visual impairment such as cataracts and refractive errors should be treated. Single-lens glasses for outdoor walking should be advised for those with multifocal lenses.
Vitamin D Supplementation
Vitamin D at 800 to 1,000 IU daily is recommended for older adults with deficiency or insufficiency. Evidence for fall prevention with vitamin D supplementation is strongest in those who are deficient.
Environmental Modifications
Home safety assessment and modifications reduce falls by 20 to 30%, particularly in high-risk individuals. Key modifications include grab bars, improved lighting, removal of trip hazards, and non-slip mats.
Managing Orthostatic Hypotension
Liberalizing salt and fluid intake when appropriate, compression stockings, medication adjustment (reducing or eliminating offending agents), and encouraging slow positional changes (sitting before standing, standing before walking) are all helpful strategies.
Bone Health
Osteoporosis screening with DEXA should be performed in women aged 65 and older and men aged 70 and older. Osteoporosis should be treated to reduce fracture risk from falls. Calcium at 1,200 mg daily from diet plus supplements and vitamin D support bone health.
Post-Fall Assessment
Every fall, even without injury, warrants evaluation for an underlying cause. New medical conditions such as infection, arrhythmia, stroke, or medication change should be assessed. Injuries that may not be immediately apparent, such as occult fractures and subdural hematoma (especially in patients on anticoagulants), should be evaluated. The fall prevention plan should be updated based on assessment findings.
Clinical Pearls
A fall is not a diagnosis but a symptom; always look for the underlying cause. Exercise programs that challenge balance are more effective than general fitness or walking programs alone. Medication review is a quick win: reducing or stopping one high-risk medication can meaningfully reduce fall risk. Fear of falling is as important as falls themselves; it leads to activity avoidance, deconditioning, and further risk. Multifactorial interventions addressing three or more risk factors simultaneously produce the greatest benefit.
References
- Montero-Odasso M, van der Velde N, Martin FC, et al. World guidelines for falls prevention and management for older adults: a global initiative. Age Ageing. 2022;51(9):afac205.
- Sherrington C, Fairhall NJ, Wallbank GK, et al. Exercise for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2019;1:CD012424.
- US Preventive Services Task Force. Interventions to prevent falls in community-dwelling older adults: recommendation statement. JAMA. 2018;319(16):1696-1704.
- Tinetti ME, Kumar C. The patient who falls: "It's always a trade-off." JAMA. 2010;303(3):258-266.