genu varum
Pronunciation: JEE-new VAIR-um
A lower limb deformity where the knees are angled outward, creating a bowlegged appearance when standing with feet together.
Full Definition
Genu varum, commonly known as bowlegs, is a frontal plane deformity of the lower extremity characterized by lateral angulation at the knee joint. In this condition, when a patient stands with their feet and ankles together, there is a noticeable gap between the knees. Physiologic genu varum is normal in infants and toddlers up to age 2-3 years, after which the legs typically straighten and may even progress to mild genu valgum. Pathologic genu varum can result from conditions such as Blount disease, rickets, skeletal dysplasias, or growth disturbances. Assessment includes clinical measurement of the intercondylar distance and radiographic evaluation of the mechanical axis. Treatment depends on the underlying cause and severity, ranging from observation to surgical correction through osteotomy or guided growth techniques.
Usage
Usage note: Distinguish from genu valgum (knock-knees); specify whether physiologic or pathologic based on age and severity.
In Context
- "The 4-year-old demonstrated persistent genu varum with an intercondylar distance of 8 centimeters." — Physical examination
- "Radiographic analysis revealed progressive genu varum secondary to medial physeal growth disturbance." — Imaging interpretation