论文部分内容阅读
Patella infera is a rare condition caused by pathological shortening of the patellar tendon.The term patella infera was coined by Caton et al1 in 1982 and the condition can severely affect knee function.Patella infera has been reported as a complication of non-operative treatment for patellar fracture;2 anterior cruciate ligament reconstruction;tibial tubercle osteotomy;surgically-treated patellar fracture;unicompartmental and total knee replacement;high tibial osteotomy;surgically-treated habitual dislocation with coexistent patella alta;and retrograde nail insertion for femoral shaft fracture.Traumatic causes of patella infera include quadriceps tendon rupture,femoral shaft fracture,and intraarticular fracture of the knee.3 Our case occurred because of closed trauma on the patellar tendon leading to partial cicatricial contracture of the patellar tendon and eventual patella infera.Z-plasty lengthening of the patellar tendon and post-operative rehabilitation were effective treatments.Despite its association with other injuries and surgeries around the knee,no previous report has discussed the connection between closed traumatic contracture of the patellar tendon and patella infera.