Principal motion analysis of manual stretching techniques for the ankle joints.
Naomi Yamada, Shogo Okamoto, Yasuhiro Akiyama and 1 others
PMID 32982055WHAT IT FOUND
Physical therapists used different ways to move and press the foot when stretching a spastic foot after stroke, and the technique also differed by patient.
This maps therapists' motions, not patient outcomes.
Key findings
01The main stretching pattern involved increased dorsiflexion moments at the heel and forefoot.
02The stretching motions varied among the physical therapists analysed and among the patients.
03The therapist-patient combination affected some of the motion patterns.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only four physical therapists and three patients were studied, and one therapist was excluded from the analysis because he stretched only one patient. All patients had spastic foot after stroke, so the findings do not describe stretching for other causes of ankle tightness. The study measured therapist motions and forces, not patient outcomes such as range of motion, pain, function, or clinical benefit. The paper does not say which technique was more effective, only that techniques varied.
Declared interests
This work was supported by JSPS KAKENHI Grants JP17K13108 and JP20K19403 and a Grant-in-Aid for individual research in Aichi Medical College. The authors declared no conflicts of interest.
The easy way to misread this
Do not read the different therapist and patient techniques as evidence that one stretching method is better or that stretching improved the patients. The study only recorded how therapists moved and pressed the foot; it did not measure range of motion, pain, function, or patient outcomes.