[Chip fracture of the lateral tibial condyle--a roentgenologic sign of anterior cruciate ligament injury].

A case report serves as basis for describing the importance of the so-called chip fracture as the first roentgenological pointer to a rupture of the anterior cruciate ligament in a handball player. The paper discusses the biomechanical changes resulting from an ACL rupture and underlines the importance of early arthroscopic diagnosis or of arthroscopic surgery for regaining knee stability and for preventing secondary subsequent damage.