A unique foot-worn device for patients with degenerative meniscal tear

Avi Elbaz, Yiftah Beer, Ehud Rath, Guy Morag, Ganit Segal, Eytan M. Debbi, Daniel Wasser, Amit Mor, Ronen Debi

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Purpose: The purpose of the current study was to assess the effects of a new foot-worn device on the gait, physical function and pain in patients suffering from knee osteoarthritis (OA) who had a low-impact injury to the medial meniscus causing a degenerative meniscal tear. Methods: A retrospective analysis of 34 patients with knee OA and a degenerative medial meniscal tear 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 12 months of therapy. AposTherapy is a functional, biomechanical, non-invasive rehabilitation therapy consisting of a foot-worn device that is individually calibrated to each patient and is used during activities of daily living. Repeated-measures analyses were performed to compare gait parameters and self-evaluation questionnaires between baseline, and 3 and 12 months. Results: Significant improvements were found in gait velocity, step length and single-limb support of the involved knee following 12 weeks of therapy (all p < 0. 01), alongside an improvement in limb symmetry. These results were maintained at the 12-month follow-up examination. Significant improvements were also found in all three domains of the WOMAC index (pain, stiffness and physical function) and in the SF-36 Physical Health Scale and the SF-36 Mental Health Scale (all p < 0. 01). Conclusions: Patients with knee OA and a degenerative medial meniscal tear using a biomechanical foot-worn device for a year showed improvement in gait, physical function and pain. Based on the findings of this study, it can be postulated that this biomechanical device might have a positive effect on this population. Level of evidence: Therapeutic study, Level IV.

Original languageEnglish
Pages (from-to)380-387
Number of pages8
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Issue number2
StatePublished - 1 Feb 2013
Externally publishedYes


  • Gait
  • Meniscal tear
  • Osteoarthritis
  • Pain
  • Physical function

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine


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