Why does slipped capital femoral epiphysis cause limping?

Slipped capital femoral epiphysis affects the growth plate near the top of the thigh bone, usually during adolescence. The ball of the hip joint is no longer aligned normally with the neck of the thigh bone. This can limit hip rotation and make the leg turn outward while walking. Pain may be felt in the hip, groin, thigh, or even the knee, so a young person may limp without describing hip pain.

A child or teenager with a new limp and hip, thigh, or knee discomfort should stop running, jumping, and sports until assessed. Do not encourage walking through pain. Arrange prompt medical evaluation; examination and hip imaging may be needed. If the diagnosis is suspected, keeping weight off the affected leg can reduce further stress while waiting for care, following local medical advice.

Seek urgent assessment for a sudden limp, inability to bear weight, severe hip or thigh pain, or symptoms after a fall. Prompt attention is also needed when a limp persists or is accompanied by an outward-turned leg. This condition can affect the other hip as well, so mention any change on either side.

Ask whether the hip needs imaging, how strictly weight should be limited, which activities are safe, how the other hip will be monitored, and what treatment protects the growth plate.