Influence of Different Prostheses on Postoperative Clinical Function in Total Knee Arthroplasty

Influence of Different Prostheses(CR Vs. PS) on Postoperative Clinical Functional Scores in Total Knee Arthroplasty Based on Extramedullary Femoral Osteotomy Techniques and Functionalist Alignment

Exploring differences in knee function after surgery with different types of prostheses(Cruciate ligament retaining(CR) VS. posterior stabilizing(PS))

Inclusion Criteria:

1. Age 45-80 years, any gender, BMI < 35 kg/m2
2. Initial diagnosis of bilateral knee OA (Kellgren-Lawrence classification grades 3 or 4). Patients who are to undergo simultaneous primary bilateral knee arthroplasty
3. Inversion deformity ≤ 15°
4. Posterior cruciate ligament integrity

Exclusion Criteria:

1. History of knee surgery (ligament, osteotomy, etc.)
2. knee flexion<90°.
3. flexion contracture of one knee > 10°
4. Comorbidity with other diseases, such as peripheral neuropathy, malignant tumors, rheumatism, etc.
5. Posterior cruciate ligament injury
6. Those assessed to be intolerant of surgery