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Giant Cell Tumor

Basics Description A benign but often locally aggressive neoplasm, characterized by large numbers of uniformly distributed, osteoclastlike giant cells and a background population of plump, epithelioid-to-spindle mononuclear cells. The vast majority of these tumors are located near the articular end of a tubular bone; ~50% occur in the knee. Other frequently involved sites: Distal […]

Congenital Pseudarthrosis

Basics Description Congenital pseudarthrosis is a rare defect of the distal tibia (at the junction of the middle 1/3 and distal 1/3) in which the bone is cystic and bowed and eventually fractures. The bone is dysplastic from birth. The deformity often increases with age. The abnormality may not be noticed unless anterior bowing […]

Ankle Sprain

Basics Description Acute sprains of the lateral ligaments about the ankle are the most common injury in sports and also occur commonly in the general population. Most commonly a partial tear or complete rupture of the ATFL occurs. More severe injuries include the CFL . Lateral ankle sprain results from an inversion mechanism. Classification […]