Osteochondroma in Ligamentum Patellae

摘要

A case of extraskeletal Osteochondroma in a 53 years old man located in medial portion of right patellar liga-ment is reported. He presented with a hard swelling with occasional pain in the antromedial part of the knee. It was slightly movable, 5 cm in diameter and interfering with movements of the knee. X-Rays sho-wed radio-opaque bony swelling in that region of knee with some degenerative changes. Excision biopsy and histopathology revealed Osteochondroma. Key words; Osteochondroma, ligamentum patellae, painful knee.