Genu recurvatum

Common card · No. 372084

Genu recurvatum is a deformity in the knee joint, so that the knee bends backwards. In this deformity, excessive extension occurs in the tibiofemoral joint. Genu recurvatum is also called knee hyperextension and back knee. This deformity is more common in women and is correlated with men with extremely high testosterone and people with familial ligamentous laxity. Hyperextension of the knee may be mild, moderate or severe. The normal range of motion (ROM) of the knee joint is from 0 to 135 degrees in an adult. Full knee extension should be no more than 10 degrees. In genu recurvatum, normal extension is increased. The following factors may be involved in causing this deformity: Inherent laxity of the knee ligaments Weakness of biceps femoris muscle Instability of the knee joint due to ligaments and joint capsule injuries Inappropriate alignment of the tibia and femur Malunion of the bones around the knee Weakness in the hip extensor muscles Gastrocnemius muscle weakness (in standing position...

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