Objective To investigate the treatment and effectiveness of inferior polar comminuted fractures of patella and patellar tendon injury. Methods Between January 2003 and December 2008, 5 patients with inferior polar comminuted fractures of patella and patellar tendon injury were treated with Nitinol Patellar Concentrator and fascia lata allograft. There were 3 males and 2 females with a mean age of 33.7 years (range, 20-48 years). The interval of injury and operation was 1-5 days. Fracture degree: 3 cases had 3 fractures of patella, 2 cases had 4 fractures; patellar tendon injury degree: 3
cases had horizontal rupture of middle l igament, 1 case had obl ique rupture of tibial tubercle, and 1 case had longitudinal partial rupture. Results Heal ing of incision by first intention was achieved in all patients, and no compl ication of infection or deep venous thrombosis occurred. The X-ray films at 2 days after surgery showed that patella recovered to normal height, which meaned ratio of patella height to patellar tendon length recovered to 1 : 1. Five cases were followed up 18 months on average (range, 10-22 months). At 3-12 weeks after surgery, the knee function of the injury side almost reached that of the normal side in 4 patients, and the knee range of motion was about 100° in 1 patient. The fracture heal ing time was 3-5 months. At 12-15 months after surgery, patella holder was taken out and no lost of reduction or refracture occurred. During follow-up, there was no fracture displacement, loosening and breakage of implant, or rerupture of patellar tendon. According to ZHANG Chuncai’ s criterion for knee joint function, the results were excellent in 3 cases, good in 1 cases, and fair in 1 case with an excellent and good rate of 80%. According to XU Shaoting’s criterion for knee joint function, the results were excellent in 2 cases, good in 2 cases, and fair in 1 case with an excellent and good rate of 80%. Conclusion Nitinol Patellar Concentrator and fascia lata allograft is a new method to treat inferior polar comminuted fractures of patella and patellar tendon injury, and it can ensure the knee joint stabil ity in early motion after surgery.
Citation： ZHANG Yuntong,WANG Panfeng,ZHANG Chuncai,FU Qingge,ZHANG Xin.. MANAGEMENT OF INFERIOR POLAR COMMINUTED FRACTURES OF PATELLA AND PATELLAR TENDON INJURY. Chinese Journal of Reparative and Reconstructive Surgery, 2011, 25(8): 976-979. doi: Copy