Revision total knee arthroplasty using the Kinemax Plus Superstabilizer prosthesis: minimum 10-year follow-up.
The results of revision total knee arthroplasty using the Kinemax Plus Superstabilizer prosthesis at a minimum of 10 years are reviewed. The implant was designed specifically for revision surgery with integral distal and posterior femoral build-ups and a modular metal reinforcement rod within the tibial polyethylene post. Eighteen consecutive knees revised for aseptic loosening or instability were studied prospectively and reviewed at 10-13 years (mean 11.6 years). Mean HSS scores improved from 51 to 86, KS knee scores from 40 to 83 and KS function scores from 48 to 82, with 83% good and excellent results. There was one re-revision for recurrent instability. Additional distal femoral add-ons were needed in 33% and posterior add-ons were needed in 22% of cases. No post breakage or deformation occurred. The design rationale has proven successful with satisfactory clinical and radiographic outcomes.
Harwin
Steven F
SF
Adult Reconstructive Surgery, Department of Orthopaedic Surgery, Beth Israel Medical Center, New York, NY, USA. hipkneedoc@aol.com
D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome