ABSTRACT:Osteochondroma is the relatively common bone tumor arising from the metaphysis of long bones. Osteochondroma arising from epiphysis of long bones are very rare. We report a case of a 67 year old man with history of right shoulder pain for past 5 years and difficulty in moving the arm for past 1 year. X-ray showed severe osteophytic changes and a subtle bony outgrowth from head of humerus. MRI showed cartilage capped bony outgrowth arising from the epiphysis of humerus. Medullary cavity of the lesion is seen communicating with the medullary cavity of bone consistent with osteochondroma.
ABSTRACT:The aim of this study is to assess the accuracy of MRI knee joint in diagnosing the internal derangement of knee with arthroscopy as reference standard. Internal derangement of knee refers to a group of disorder involving disruption of the normal functioning of the ligaments or menisci of knee joint. It can be traumatic or degenerative. MRI is most commonly indicated in patients with suspected injuries of the menisci and ligaments. This prospective study was done in the department of radiodiagnosis, KMCT medical college. In this study 150 patients suspected to have internal derangement of knee were included. MRI knee and arthroscopy were done in all cases. MRI had a diagnostic accuracy of 88% in ACL injuries, 93% in PCL injuries, 88% in medial meniscal injuries and 91% in lateral meniscal injuries. MRI is highly accurate in diagnosis of ligament and meniscal injuries and it can replace diagnostic arthroscopy in patients with internal derangement of knee.
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