AposTherapy a Positive Effect on Patients with Anterior Knee Pain

The outcome of a novel biomechanical therapy for patients suffering from anterior knee pain

Haim, A., et al., The Knee Journal 2012

Background
This study was devised to examine the effect of a novel biomechanical therapy for patients suffering from anterior knee pain (AKP).


Methods
A retrospective analysis of 48 patients suffering from AKP was performed. Patients underwent a gait evaluation, using an electronic walkway mat, and completed the SF-36 health survey and the WOMAC questionnaire at baseline and after 3 and 6 months of therapy. A special biomechanical device was individually calibrated for each patient. AposTherapy is a functional, non-invasive rehabilitation therapy consisting of a biomechanical foot-worn device that is used during activities of daily living. Repeated measures analyses were performed to compare gait parameters and self-evaluation questionnaires between baseline, 3 months and 6 months.

Results
Walking velocity significantly increased by 5.7 cm/s, cadence increased by 1.6 steps/minute, and stride length increased by 3.4 cm in relation to pretreatment testing (p b 0.001 for all). End-point evaluation revealed additional improvement of these parameters; however these did not significantly differ from that of mid-treatment. Pain decreased by 36.6% and 49.2% following 13 and 26 weeks of treatment, respectively (Pb0.01) and function improved by 25.2% and 41.7% following 13 and 26 weeks of treatment, respectively (P=0.01).

Conclusions
The males show significantly greater coronal dimensions of the trochlea than women, which are likely to contribute to the higher prevalence of prosthetic overhang in women with some standard implants. Clinical relevance: Based on the current study’s results it may be concluded that this therapy might have a positive effect for patients with AKP.

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