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  • Title: [Management of inferior polar comminuted fractures of patella and patellar tendon injury].
    Author: Zhang Y, Wang P, Zhang C, Fu Q, Zhang X.
    Journal: Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi; 2011 Aug; 25(8):976-9. PubMed ID: 21923029.
    Abstract:
    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 ligament, 1 case had oblique rupture of tibial tubercle, and 1 case had longitudinal partial rupture. RESULTS: Healing of incision by first intention was achieved in all patients, and no complication 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 degrees in 1 patient. The fracture healing 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 stability in early motion after surgery.
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