tailieunhanh - Báo cáo y học: "Recurrent locked knee caused by an impaction fracture following inferior patellar dislocation: a case report."

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Recurrent locked knee caused by an impaction fracture following inferior patellar dislocation: a case report. | Barlow et al. Journal of Medical Case Reports 2011 5 347 http content 5 1 347 JOURNALOF medical Ur Case REPORTS CASE REPORT Open Access Recurrent locked knee caused by an impaction fracture following inferior patellar dislocation a case report David Barlow Keen S Foong Shin J Rhee William Sutcliffe and Stuart J Griffin Abstract Introduction Locked knee caused by inferior patellar dislocation is considered rare in elderly patients. It was originally thought that in the osteoarthritic knee osteophytes on the pole of the patella become entrapped in the inter-condylar notch which is managed by performing closed reduction and immobilization in a knee splint for three to four weeks. We present an unusual case of a locked knee with an impaction fracture. To the best of our knowledge there have been no previous reports of such impaction fractures managed with arthroscopy. Case presentation We present an unusual case of an 88-year-old Caucasian woman with moderate arthritis who had a locked knee caused by an impaction fracture of the patella into the lateral femoral condyle. In this case report we describe the need for arthroscopic surgery to prevent relocking of the knee in these patients. Conclusions This case report emphasizes the need for careful assessment of locked knees in elderly patients. Impaction fractures should be considered in all rare cases of patellar dislocation and we advocate arthroscopic assessment of the articular cartilage in these patients. This is an important consideration as the population demographics change and such impaction fractures may become more common in patients with degeneration in the knees. Introduction Patients with locked knees present to orthopedic and emergency departments relatively often and the many causes of this entity are well documented in the literature 1 2 . These include meniscal lesions loose bodies ligament injuries hematomas tumors and patellar dislocations 3-5 . Locked knee presenting with