Objective gait analysis using Kinect v2® for the prognosis of walking during the acute phase of rehabilitation after proximal femoral fracture surgery.
Kohki Matsubara, Gen Kuroyanagi, Atsushi Imamura and 7 others
PMID 40575470WHAT IT FOUND
Patients who could walk with a walker one week after hip fracture surgery showed significantly better gait speed and balance at discharge than those who could not.
Early weight-bearing and pain control appear critical for prognosis, though this small study cannot prove causation.
Key findings
01Participants able to walk with a walker at one week post-surgery had significantly higher gait velocity and better dynamic balance (TUG) at weeks 2, 3, and 4 compared to those who could not.
02Gait velocity, step length, stride, and swing/stance phases at week 4 were strongly correlated with Timed Up and Go (TUG) scores and Oxford Hip Scale (OHS) outcomes.
03The poor prognosis group showed no significant improvement in gait parameters over time, while the good prognosis group improved significantly in velocity and cycle time.
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 included only 17 participants, making the results preliminary. It was a single-center study, so findings may not apply to other facilities. Strict exclusion criteria removed patients with dementia or other conditions affecting walking, limiting generalizability to complex clinical populations. The Kinect v2 device is no longer in production, though successors exist. Age was a confounding factor, as the poor prognosis group was significantly older.
Declared interests
The study was supported by grants from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, the Sugiura Memorial Foundation, the Hip Joint Foundation of Japan, and the National Center for Geriatrics and Gerontology. No commercial conflicts were declared.
The easy way to misread this
Do not assume that using a Kinect sensor alone will improve patient outcomes. The device provided data, but the clinical benefit likely stems from the early mobilization and pain control that allowed patients to walk by week one. Additionally, the small sample size means these prognostic factors require validation in larger trials before changing standard care protocols.