How to identify balance disorders and reduce fall risk

CASE Mr. J, a 75-year-old man, presents to your family practice reporting that he feels increasingly unsteady and slow while walking. He fell twice last year, without resulting injury. He now worries about tripping while walking around the house and relies on his spouse to run errands.

Almost 30% of people older than 65 years report 1 or more falls annually.

Clearly, Mr. J is experiencing a problem with balance. What management approach should you undertake to prevent him from falling?

^{Copyright Scott Bodell}

Balance disorders are common in older people and drastically hinder quality of life.^1-4 Patients often describe imbalance as vague symptoms: dizziness, unsteadiness, faintness, spinning sensations.^5,6 Importantly, balance disorders disrupt normal gait and contribute to falls that are a major cause of disability and morbidity in older people. Almost 30% of people older than 65 years report 1 or more falls annually.⁷ Factors that increase the risk of falls include impaired mobility, previously reported falls, reduced psychological functioning, chronic medical conditions, and polypharmacy.^7,8

The cause of any single case of imbalance is often multifactorial, resulting from dysfunction of multiple body systems (TABLE 1^7-56); in our clinical experience, most patients with imbalance and who are at risk of falls do not have a detectable deficit of the vestibular system. These alterations in function arise in 3 key systems—vision, proprioception, and vestibular function—which signal to, and are incorporated by, the cerebellum to mediate balance. Cognitive and neurologic decline are also factors in imbalance.

Considering that 20% of falls result in serious injury in older populations, it is important to identify balance disorders and implement preventive strategies to mitigate harmful consequences of falls on patients’ health and independence.^7,57 In this article, we answer the question that the case presentation raises about the proper management approach to imbalance in family practice, including assessment of risk and rehabilitation strategies to reduce the risk of falls. Our insights and recommendations are based on our clinical experience and a review of the medical literature from the past 40 years.

CASE Mr. J has a history of hypertension, age-­related hearing loss, and osteoarthritis of the knees; he has not had surgery for the arthritis. His medications are antihypertensives and extra-strength acetaminophen for knee pain.

Making the diagnosis of a balance disorder

History

A thorough clinical history, often including a collateral history from caregivers, narrows the differential diagnosis. Information regarding onset, duration, timing, character, and previous episodes of imbalance is essential. Symptoms of imbalance are often challenging for the patient to describe: They might use terms such as vertigo or dizziness, when, in fact, on further questioning, they are describing balance difficulties. Inquiry into (1) their use of assistive walking devices and (2) development or exacerbation of neurologic, musculoskeletal, auditory, visual, and mood symptoms is necessary. Note the current level of their mobility, episodes of pain or fatigue, previous falls and associated injuries, fear of falling, balance confidence, and sensations that precede falls.⁵⁸

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