Narrowing beam-walking is a clinically feasible approach for assessing balance ability in lower-limb prosthesis users.
Andrew Sawers, Brian J Hafner
PMID 29616279WHAT IT FOUND
In 40 lower-limb prosthesis users, 39 could start a narrowing beam but rarely finish it, and performance stabilized quickly.
Averaging trials 3 to 5 best estimated usual beam-walking performance, but fall-risk use is unproven.
Key findings
01Forty lower-limb prosthesis users were tested, and 39 could start but rarely finish the narrowing beam.
02Thirty-seven of 40 participants had last change points identified by the fifth trial, and 25 showed no change points.
03The mean of trials 3 through 5 was the most accurate short test procedure for estimating stable performance.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only 40 ambulatory lower-limb prosthesis users were studied, and they had to walk 3.05 m without an assistive device other than a prosthesis, so results may not apply to more limited users. The study was cross-sectional and measured only within-session performance, so it does not show whether the test is reliable across days. The proposed scoring gives an estimate of stable performance and may not be accurate for every individual. The study did not test whether narrowing beam-walking can identify fall risk or diagnose balance problems.
The easy way to misread this
Do not treat this as a validated balance test for clinical decisions or fall-risk screening. The study was a cross-sectional feasibility assessment in 40 ambulatory lower-limb prosthesis users, and the authors state it does not imply the task can be used to evaluate fall risk.