How common is limping in Perthes Disease?

Perthes Disease affects the developing ball of the hip joint. A child may shorten their stride, turn the foot outward, avoid running, or shift weight away from the affected side. The limp can be more noticeable after activity and may come and go. Hip stiffness can limit movement even when the child describes little discomfort. A limp alone does not establish the cause; assessment may include walking observation, hip movement checks, and imaging.

Arrange a clinical assessment for a new or ongoing limp, particularly when a child has reduced hip movement or stops usual activities. Until reviewed, choose low-impact activity and avoid forcing painful movement. Note when the limp began, whether it changes during the day, and whether pain is felt in the hip, thigh, or knee. These details help the clinician plan the examination.

Seek prompt medical care if the child cannot bear weight, develops sudden severe hip pain, has fever or appears unwell, or the limp follows an injury. Urgent review is also sensible when the limp is rapidly worsening. A persistent limp without an obvious explanation deserves a timely appointment even if the child remains comfortable.

Ask whether the hip movement pattern fits Perthes Disease, whether imaging is needed, which activities are suitable now, and how progress will be monitored. You can also ask which symptoms should trigger an earlier review and whether physiotherapy may help preserve comfortable movement.