Use of the KineSpring system in the treatment of medial knee osteoarthritis: Preliminary results

Abstract

Purpose: The purpose of this study was to analyze our preliminary results obtained with the Kinespring system in patients suffering from medial compartment knee osteoarthritis (OA). Methods: Between september 2012 and May 2014, 53 patients underwent treatment with the Kinespring system. Patient self-assessment was performed preoperatively and at 3, 6 and 12 months postoperatively, and included the KOOs, tegner activity score, Lysholm functional knee score, VAS knee pain score, and IKDC score. Device- and procedure-related adverse events were recorded. Results: Mean KOOs subscales, except for the sport/Recreation subscale at six months, improved over time. Mean WOMAC Pain and Function domains, Lysholm score, IKDC score and VAS knee pain score improved over the follow-up period and were significantly improved at 3, 6 and 12 months postoperatively compared to baseline. Mean tegner score improved slightly over time. in 5 of the 53 (9.4%) patients re-operation was necessary. in 3 patients the device was removed due to infection (one case) or persistent knee pain (two cases). surgical arthrolysis was performed in two patients. Conclusions: In our preliminary experience, the Kinespring system gave good short-term clinical results. Level of evidence: Level IV, therapeutic case series.