In this deformity, excessive extension occurs in the tibiofemoral joint.

This deformity is more common in women[citation needed] and people with familial ligamentous laxity.

[2] 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.

The following factors may be involved in causing this deformity:[citation needed] The most important factors of knee stability include:[citation needed] Treatment generally includes the following:[citation needed] This condition is considered to be rare, with about 1 in 100,000 births being affected by the congenital form of genu recurvatum,[3] although it's a common feature in some disorders, such as in joint hypermobility, which affects 1 in 30 people.