FROM MY PT SCHOOL NOTES · FOUNDATIONS OF CLINICAL SKILLS · CHAPTER 12
How Do You Tell Which System Is Helping Someone Balance?
Balance uses information from the body, eyes and vestibular system along with motor responses.
Define stability and postural control
The class treats balance as the interaction of sensory input, central integration and motor response. Terms to recognize: center of mass (COM), base of support (BOS), limits of stability, static versus dynamic balance and anticipatory/reactive postural adjustments. Postural control depends on what the person is doing and the surrounding environment.
Sensory systems in the source: somatosensory information from the body and support surface, vision, and vestibular information about head position and motion. The lecture and SOT/CTSIB lab change surface or visual conditions to observe how a patient uses the remaining input. A loss of balance under one condition does not independently diagnose one sensory-system disorder.
Observe sensory contributions
Balance tests listed in the FCS course: Romberg and sharpened Romberg, Functional Reach, Berg Balance Scale, Tinetti/POMA, Timed Up and Go, Dynamic Gait Index, tandem walking and selected dual-task observations. The course reviews static and dynamic tasks, appropriate support, observation of sway and guarding, and tracking performance over time. Use the proper instrument instructions; the scored forms from third parties are not reproduced here.
Coordination screening from lab: finger-to-nose, heel-to-shin, rapid alternating hand movements (diadochokinesia), finger-to-thumb sequencing, foot tapping and selected rebound tasks. Record accuracy, speed, smoothness, rhythm and any asymmetry while recognizing that strength, cognition, vision and sensation can also influence performance.
Compare balance and coordination measures
Balance-training examples from the lab include obstacle negotiation, turning, head movements while walking, tandem walking, varied support surfaces and dual-task mobility. These are classroom exercise categories rather than a required progression for every patient; start at a safe level appropriate to the person and environment.
The aging lecture addresses intrinsic and extrinsic influences on posture, strength, joint motion, sensory function and fall risk. It contrasts historical models of primary and secondary aging, while the gait lecture stresses the patient’s fall history and circumstances. Age alone does not explain an impairment, and falls may reflect multiple interacting contributors.
Check your reasoning: Does difficulty with eyes closed prove a vestibular condition?
No. Vision removal changes sensory demands, but the result does not independently diagnose a system or disease.
Updated-standard context
The lecture contains historical cutoff values for Berg, TUG, DGI and Tinetti/POMA. Use the proper current test protocol and population-specific interpretation rather than treating any single course cutoff as universally predictive of falls. Students should compare these reference numbers with their own notes and the original instrument resources.
Apply it to a clinical situation
Scenario: A person is stable on firm ground with eyes open but sways substantially when vision is removed on a compliant surface.
What changes your decision?
Reasoning: The altered condition increases reliance on remaining sensory sources. Describe performance and safety; it does not diagnose a single vestibular or somatosensory disorder. Review other balance findings and appropriate examination.
Common mistake: Turning one CTSIB-style condition into a definitive vestibular diagnosis. Remember: Sensory challenges change task demand; interpretation requires the full pattern.
Based on my FCS lecture/lab companion notes, Chapter 12. This is a student lesson; test forms, publisher diagrams and original restricted handouts are not reproduced. Follow current clinical supervision and policy.
