[Fixed-bearing unicompartmental knee arthroplasty for medial compartmental knee osteoarthritis]

To evaluate short-term clinical results of fixed-bearing unicompartmental knee arthroplasty (UKA) for patients with medial compartmental knee osteoarthritis.

From January 2015 to December 2017, 62 patients with medial compartmental knee osteoarthritis were treated by fixed-bearing UKA. Among them, including 19 males and 43 females, aged from 47 to 83 years old with an average of (65.3±8.2) years old. The courses of disease ranged from 5 to 72 months with an average of(19.4±14.3) months. Postoperative complications were observed, VAS score was used to observe degree of pain relief, Hospital for Special Surgery(HSS) score was used to evaluate clinical effects.

All patients were followed up from 4 to 40 months with an average of(19.9 ±10.2) months. The incision healed well without blood transfusion, hospital stays ranged from 2 to 10 days with an average of (3.5±1.6) days. No deep infection, dislocation, loosing or per prosthetic fracture occurred after operation, while 1 patient suffered from posterior tibial vein thrombosis. HSS score improved from 69.9±7.2 before operation to 90.1±7.4 at final following-up, and 51 patients obtained excellent results, 9 patients good and 2 moderate. VAS score decreased from 3.8±0.9 before operation to 1.1±0.9 at final following-up.

Fixed-bearing UKA for medial compartmental knee osteoarthritis could obtain short-term clinical results for shorter hospital stay, less complications. with fewer complication and fast recovery.