Comparison of Postoperative Functional Outcomes Between Subvastus and Medial Parapatellar Approach in Total Knee Arthroplasty

Inclusion Criteria:

• Patients aged 50 to 80 who are diagnosed with end-stage knee osteoarthritis that require unilateral primary total knee arthroplasty;
• Patients who are determined by clinical and laboratory tests to have no absolute surgical contraindications;
• Patients with good compliance, willing and able to undergo follow-up observations as required and sign the informed consent form;

Exclusion Criteria:

• Patients with a history of surgery on the affected knee joint in the past;
• Patients with neuromuscular diseases;
• Patients scheduled for knee joint replacement revision surgery;
• Patients with active knee joint infection or systemic infection;
• Patients who receive primary joint replacement due to non-knee osteoarthritis, such as rheumatoid arthritis, tuberculous arthritis, traumatic arthritis, etc;
• Patients with valgus or varus deformity of the knee joint greater than 15°;
• Patients with knee flexion deformity greater than 15°;
• Patients whose heart and lung functions are determined by clinical and laboratory tests to be unable to tolerate surgery;
• Patients with mental disorders who are unable to cooperate with treatment;
• Patients who is lactating or pregnant;
• Patients who are unwilling to participate in this study and did not sign the informed consent form;
• Patients with poor compliance and inability to cooperate in completing the follow-up observers at critical times;
• For any reason, the researchers believe that the subject is unlikely to complete this study.