关键词: 骨软骨骨折;髌骨脱位;可吸收螺钉;内固定

Abstract: 【Abstract】〓Objective〓To investigate the effect of using absorbable screws in treating acute osteochondral fracture of patella. Methods〓From June 2004 to December 2009,14 patients with acute knee injury, aged from 13-21 years (3 males and 11 females, 8 left knees, 6 right knees). Eight cases were confirmed as acute osteochondral fracture of patella by CT imaging, and six cases by MRI. All cases revealed patella subluxation,osteochondral fracture in the rearward medial part and medial retinaculum injuries of patella,.as well as cartilage contusion of condylus lateralis femoris in intraoperative finding. Osteochondral fractures of patella were treated with open reduction and fixation with absorbable screws. Knee joints exercise with contraction of quadriceps muscle began in 24 hours after operation. The patients received external fixation for 3 weeks. Weight bearing walking began in 2-3 months after CT or X-ray showed bone healing. Results〓Twelve patients were followed with 4-9 years, an average of 6.5 years. According to HSS evaluation, 11 cases were excellent, one case was good. Conclusion〓Early surgical procedure, excellent reduction and fixation with absorbable screws, early active exercise were necessary for the treatment of osteochondral fracture of patellas.

Key words: Osteochondral fracture, Patellar dislocation, Absorbable screw, Internal fixation