Arthroscopically Minimally Invasive Treatment of Acute Patellar Dislocation

Abstract：Objective To explore the clinical methods and effects of arthroscopically minimally invasive treatment of a-cute patellar dislocation. Methods From July 2008 to September 2011,14 patients with acute patellar dislocation were trea-ted,including 9 males and 5 females with an average age of(21. 8 ± 5. 3)years. All had history of knee trauma,without knee laxity and dysplasia of patellofemoral joint. All the patients experienced arthroscopic examination first and removed of hemar-throsis and treat of injured artificial surface. Then through a 1. 5 cm incision at median rim of patella,pushing the skin,anchor fixation method was applied to fold medial retinaculum for reconstruction. Lateral patellofemoral ligament would be released de-pended on the conditions. Results 14 patients were followed up postoperatively from 24 ~ 60 months with an average of 72. 2 months. The patients had no recurrence of dislocation after operation,the apprehensive tests were negative and their ranges of motion returned to normal. 3 of them got a slight feeling of stress when the knee was overflexed but all resumed the pretrauma life state. The structures of patellofemoral joint were normal and the areas of injured cartilage got neither enlarged nor further degenerated on radiographs and MRI. Conclusion Arthroscopically minimally invasive treatment of acute patellar dislocation is an easily operation and has a number of benefits. Its clinical outcome is reliable.