Application of Deluxe-PS and PFC Sigma RP prostheses in knee joint replacement / 中国组织工程研究

ABSTRACT

BACKGROUND:During artificial knee replacement for al kinds of severe knee disease or conservative treatment for end-stage knee disease, Deluxe-PS knee prosthesis and PFC Sigma RP knee prosthesis have their advantages. OBJECTIVE: To compare and analyze the matching of the Deluxe-PS and PFC Sigma RP knee prostheses with bone cross section. METHODS:According to the use of the knee prosthesis, 87 gonarthritis patients undergoing bilateral knee replacement were divided into two groups. 46 cases in the test group received Deluxe-PS knee prosthesis replacement. 41 cases in the control group received PFC Sigma RP knee prosthesis replacement. Operation time and intraoperative blood loss were compared between the two groups. American Knee Society score, knee score of American Special Surgical Hospital and knee joint range of motion were used to evaluate knee joint function before replacement, 3 months after replacement and during final folow-up. Anteroposterior X-ray films were obtained after replacement to measure valgus angle and flexion angle of femoral prosthesis. RESULTS AND CONCLUSION: (1) Operation time and intraoperative blood loss were significantly better in the test group than in the control group (P 0.05). Above indexes were significantly improved in both groups at 3 months after replacement and during final follow-up (P 0.05). (4) These findings indicate that effect of Deluxe-PS type artificial knee prosthesis was identical to that of PFC Sigma RP knee prosthesis in knee osteoarthritis patients receiving bilateral knee joint replacement. Deluxe-PS type artificial knee prosthesis can perfectly realize high-accuracy combination of the prosthesis and the bone cross section, and enhance the fusion suitability of the prosthesis and the bone surface. Deluxe-PS type artificial knee prosthesis has the advantage of operation. This advantage is possibly because Deluxe-PS type artificial knee prosthesis is more in line with the anatomical structure of the knee joint of Chinese.