Minimally Invasive Computer-assisted Total Knee Arthroplasty Through a Subvastus Approach

摘要

This retrospective study compared 26 computer-assisted total knee arthroplasties (TKAs) (e.motion, B. Braun Aesculap, Tuttlingen,Germany) performed using a minimally invasive surgery (MIS) subvastus approach (with 26 computer-assisted TKAs (e.motion) performed using a mini-standard medial parapatellar approach. Preoperative clinical and radiography Knee Society scores as well as postoperative functional outcomes were compared.The tourniquet time and amount of closed-suction blood drainage were recorded to estimate blood loss. Postoperative flexion was measured daily during hospitalization, with follow-up measurements at 6 weeks, 3 months, and 6 months postoperatively. Pain levels were assessedusing a visual analog scale and by the amount of pain-control drugs administered during hospitalization. Implant alignment was measured through long radiography films in standing position and in standard anteroposterior and lateral projections.