Good mid-term outcome of the rotating hinge knee in primary total knee arthroplasty – Results of a single center cohort of 106 knees with a median follow-up of 6.3 years

Background The prognosis of complex primary total knee arthroplasty (TKA) with severe deformity and ligament deficiency is not clear. There a paucity evidence in the current literature on treatment outcomes rotating hinge implants TKA. aim this study was to determine mid-term clinical, radiographic, health-related quality life (HRQoL) patients who had undergone TKA using single hinged replacement. Methods In total, 106 TKAs (101 patients) were performed (RHK) implant design at our institution between January 2004 December 2013. We conducted retrospective analysis prospectively collected outcome data these patients, obtaining also information all possible revision surgeries from Finnish Arthroplasty Register, prospective follow-up living patients. Results 10-year Kaplan-Meier survival rate RHK knees 91.6% (95% CI 86.0% 97.2%) for any reason as endpoint. Overall, eight (7.5 %) underwent surgery during follow-up. None unrevised radiographically loose. majority evinced good clinical measured patient reported measures. Conclusion replacement which assessed can be regarded suitable option TKA, provided adequate attention paid correct indications selection.