Surgery procedure
hyperplasia
OSTEOPHYTES, HYPERPLASIA
The surgeries for patients in both groups were performed by the same attending surgeon. Patients underwent general anesthesia and femoral nerve block(FNB) the affected extremity was routinely disinfected, followed by draping. Subsequently, a pneumatic tourniquet was applied. A 14-cm incision was intraoperatively created in the median skin of the knee joint, and the subcutaneous tissues and fascia were incised to remove hyperplasia, osteophytes, and synovial tissues in the joint. After osteotomy, a test mold was installed to check the balance of extension and flexion gap in the knee, and the prosthesis was adhered with bone cement and implanted. The same prosthesis (Beijing AK Medical Co., Ltd., Beijing, China) was used in both groups.Patients in the ORC group underwent hemostasis with two pieces of ORC, one piece on the posterior side of the articular capsule after the installation of the tibial prosthesis and the other piece on the suprapatellar bursa after the loosening of the tourniquet. Thereafter, the wound was sutured layer by layer (Fig. 
The procedure of intraoperative topical application of oxidized regenerated cellulose. 