Is it advisable to do exercise when affected by Legg-Calvé-Perthes disease? Which activities would you suggest and how intense should they be?

Physical activity is highly recommended for children with Legg-Calvé-Perthes disease, provided it is low-impact and focused on maintaining range of motion rather than high-intensity loading. Engaging in guided exercise helps preserve hip joint mobility and strengthens the surrounding musculature, which is essential for long-term recovery and managing the symptoms of Legg-Calvé-Perthes disease.

Is exercise safe for children with Legg-Calvé-Perthes disease?

Many families fear that movement will worsen the condition, but complete immobilization is rarely the standard of care today. In Legg-Calvé-Perthes disease, the blood supply to the femoral head is temporarily disrupted, leading to bone weakness. While we must avoid high-impact activities that put excessive pressure on the hip, gentle movement is crucial. Exercise helps keep the femoral head centered in the socket (containment), which is the primary goal of treatment for Legg-Calvé-Perthes disease. Always consult your orthopedic specialist before starting any new activity, as the specific stage of the disease will dictate your child’s safety limits.

What types of activities are recommended for Legg-Calvé-Perthes disease?

The goal of exercise for Legg-Calvé-Perthes disease is to improve hip abduction (moving the leg away from the body) and internal rotation. Low-impact, non-weight-bearing exercises are the gold standard. These activities help maintain muscle tone without placing compressive force on the fragile hip joint:

• Swimming and Water Aerobics: The buoyancy of water removes weight from the hip while allowing for a full range of motion.


• Stationary Cycling: Excellent for maintaining knee and hip mobility with minimal impact.


• Seated Floor Exercises: Gentle stretches and isometric strengthening can be done while sitting to avoid joint fatigue.


• Physical Therapy-Led Range of Motion: Focused movements designed to prevent contractures in the hip muscles.

Which activities should be avoided?

High-impact sports are generally contraindicated during the active phases of Legg-Calvé-Perthes disease. You should approach activities that involve running, jumping, or sudden pivoting with extreme caution or avoid them entirely until your physician confirms the bone has adequately healed. Activities such as contact sports (soccer, football, basketball) and gymnastics pose a risk of injury to the softened bone of the femoral head and should be deferred until medical clearance is provided.

How can physical therapy support recovery?

Physical therapy is a cornerstone of managing Legg-Calvé-Perthes disease. A therapist can help create a customized program that balances rest with necessary movement. On days when your child experiences increased discomfort, it is important to practice pacing. This means breaking exercise into shorter, 5-to-10-minute sessions rather than one long session, and prioritizing rest if pain levels increase. With 227 members in our DiseaseMaps.org community sharing their experiences, we know that consistent, supervised physical therapy is often cited as the most effective tool for regaining function and maintaining physical health.

Next steps

• Consult your pediatric orthopedic surgeon to determine which "stage" of Legg-Calvé-Perthes disease your child is in.


• Request a referral to a pediatric physical therapist familiar with hip-preservation protocols.


• Join the DiseaseMaps.org community to connect with other families navigating the challenges of Legg-Calvé-Perthes disease.


• Monitor for signs of fatigue or increased limp, which are signals to reduce activity intensity immediately.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment; always seek the advice of your physician regarding a medical condition.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Legg-Calvé-Perthes disease overview.


• Orphanet: Portal for rare diseases and orphan drugs (ORPHA: 2909).


• Journal of the American Academy of Orthopaedic Surgeons: Clinical practice guidelines for the management of Legg-Calvé-Perthes disease.


• International Perthes Study Group: Research and patient resources.