Blount Disease, Adolescent

Description

Blount disease is a developmental condition characterized by disordered endochondral ossification of the medial part of the proximal tibial physis resulting in multiplanar deformities of the lower limb (review by Sabharwal, 2009).

Clinical Features

Blount (1937) distinguished infantile (188700) and adolescent forms.

The description by Tobin (1957) of tibia vara beginning at puberty with osteochondritis dissecans of the knees (see 165800) in father and 2 sons suggested that the 2 disorders may be identical.

Motzkin et al. (1992) and Tarnok et al. (2003) reported Blount disease in Bardet-Biedl syndrome (209900).