title: Intraarticular osteochondroma of the knee.
abstract: Osteochondromas are usually extra articular and grow away from the joint towards the diaphysis. Intraarticular osteochondromas are very rare and often misdiagnosed. We report a case of 16-year-old boy who presented with pain and clicking sound in the right knee for last 6 months. On examination, click was felt at the terminal flexion of the knee. The lateral radiograph of the right knee showed a radio opaque shadow at the posterior aspect of the distal end of femur, which was further evaluated with an MRI. Arthroscopy showed a hard lesion arising from the roof of the intercondylar notch of femur. It was excised arthroscopically. Histopathology revealed it to be an osteochondroma. Thus, intraarticular osteochondroma of the knee can be considered as a rare cause of pain in young patients.
authors.affiliation: Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Vivek Morey
authors.initials: VM
authors.lastname: Morey
authors.affiliation: Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Divesh
authors.initials: D
authors.lastname: Jalan
authors.affiliation: Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Ravi
authors.initials: R
authors.lastname: Mittal
authors.affiliation: Department of Radiology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Shivanand
authors.initials: S
authors.lastname: Gamangatti
keywords: Arthroscopy; intraarticular; knee; osteochondroma