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What is an O-Type Leg?

Published in Leg Deformity 1 min read

An O-type leg, also known as genu varum, is a condition where the knees point outwards when a person stands with their feet together. This creates a bow-legged appearance.

Understanding Genu Varum (O-Legs)

Genu varum is a deformity characterized by increased outward bowing of the legs. This occurs because the angle between the thigh bone (femur) and the shin bone (tibia) is abnormally increased.

  • Visual Identification: The most noticeable feature is the outward curvature of the legs, resulting in a space between the ankles when the knees are touching.
  • Causes: While it can be present at birth (congenital), it can also develop later in childhood or adulthood due to various factors including rickets, Blount's disease, or trauma.
  • Severity: The severity varies; some individuals have only a slight bowing, while others have a significant outward curve.
  • Treatment: Treatment options range from observation and physical therapy for mild cases to surgical intervention for severe deformities.

The contrasting condition, where the knees point inward, is called genu valgum (X-legs). Both conditions can affect gait and overall musculoskeletal health. Identifying the condition and its severity is crucial for appropriate management and treatment.