Postural sway serves as a predictive biomarker in balance and gait assessments for diabetic peripheral neuropathy screening: a community-based study.
Yun-Ru Lai, Wen-Chan Chiu, Chi-Ping Ting and 5 others
PMID 40452056WHAT IT FOUND
Standing sway speed predicted neuropathy in this community group, with a cut-off of 0.98 cm/s.
It missed one in three cases, so use it to flag risk, not to confirm diagnosis.
Key findings
01Postural sway velocity was an independent predictor of diabetic peripheral neuropathy presence.
02A sway velocity cut-off of 0.98 cm/s achieved 68.2% sensitivity and 85.5% specificity for detecting neuropathy.
03Participants with neuropathy had significantly higher sway velocity, longer sway path length, slower gait speed, and shorter stride length than healthy controls.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study had a small number of participants with diabetes and neuropathy, which limits the generalizability of the findings. The cross-sectional design prevents causal conclusions about the relationship between balance impairments and neuropathy progression. Recruitment was from a single community setting, which may not reflect the broader population. The specialized equipment used is not yet available in most community clinics, though the authors suggest simpler tools could be developed. Nerve conduction studies were limited to the sural nerve, potentially missing cases where other nerves are affected.
Declared interests
The study was funded by the National Science and Technology Council and Chang Gung Memorial Hospital. No specific conflicts of interest were declared by the authors in the provided text.
The easy way to misread this
Do not use sway velocity as a standalone diagnostic test. The sensitivity of 68.2% means it misses approximately one in three cases of neuropathy, so a normal result does not rule out the condition.