Correlation of Magnetic Resonance Imaging with Arthroscopic Finding in Internal Deranement of the Knee

We selected one hundred magnetic resonance imaging(MRI) in knees of patients with internal derangement of the knee, in all of those cases, arthroscopic operations were performed. Twenty medical doctors, who didnt know the arthroscopic findings, reviewed these MRI; 5 radiology specialists, 5 radiology residents, 5 orthopedic surgeons and 5 orthopedic residents. The radiologists were not informed about the medical history and physical examination of the patients when they read the MRI, but the orthopedic surgeons had the information about those of the patients. The accuracy of reading of MRI was compared between radiologists and orthopedic surgeons, and between specialists and residents. The check-list of the reading were medial and lateral meniscus, ACL and PCL, medial synovial plica and osteochondral lesion. Overall results of accuracy of MRI reading were as follows; radiology specialist-86%-, radiology resident-77%-, orthopedic surgeon-90%- and orthopedic resident-84%-. So accuracy was superior in orthopedic group and specialist group. The medical history and the physical examination of the patients were very helpful to improve accuracy of MRI reading. Reading skill was also important for accurate reading of MRI.

Osteochondritis Dissecans of the Knee Associated with Gout: A Case Report

Osteochondritis dissecans of the knee occurs twice as often in males as in females. The peak incidence is about fifteen years of age, and most patients are first diagnosed before the age of eighteen. The etiology of osteochondritis dissecans is still unknown, but the most accepted theories are trauma, ischemia, abnormal ossification within the physes, constitutional or genetic predisposition, and a combination of these. Osteochondritis dissecans of the knee associated with gout was first reported by Carrabba in 1969. And no additional case has been reported. The purpose of this paper is to present an unusual case of osteochondritis dissecans of the knee associated with gout.