Bow-Legged Legs: What the Shape Means

The medical term is genu varum. Some outward curve can occur during normal early growth, while persistent or worsening alignment may reflect the shape of the bones, growth plates, or a previous injury. Appearance alone does not show the cause.

A clinician looks at both legs while standing and walking, noting whether the curve is even, where it comes from, and how the hips, knees, ankles, and feet move together. Shoe wear and the direction of the kneecaps can add useful clues.

Age and change over time matter. Photographs taken in the same stance can help show progression, but diagnosis may require an examination and, when indicated, standing imaging that shows the full weight-bearing alignment.

Comfortable activity can usually continue if there is no pain or functional difficulty. Choose supportive footwear and note whether walking, running, stairs, or sport brings on knee, hip, ankle, or foot discomfort.

Physiotherapy may improve strength, balance, movement control, and confidence, although exercise does not reshape a fixed bony curve. Treatment is selected for the underlying cause and the effect on daily function, not simply for a gap between the knees.

Arrange a clinical review if the curve is becoming more noticeable, affects only one side, persists beyond the expected stage of childhood growth, or is accompanied by limping, pain, stiffness, frequent falls, or reduced activity.

Seek urgent care after a significant injury if the person cannot bear weight, the leg looks newly deformed, or there is marked swelling, numbness, a cold foot, or severe pain. These signs concern an acute problem rather than ordinary limb shape.

Ask whether the curve fits the person’s age and growth pattern, whether it originates in the thigh bone or shin bone, and whether follow-up measurements are appropriate. It is also useful to ask what changes in walking, pain, or symmetry should prompt an earlier return.

If treatment is proposed, clarify whether its goal is comfort, function, monitoring growth, or changing bone alignment, and how progress will be judged.