Is it advisable to do exercise when affected by Hereditary multiple exostoses? Which activities would you suggest and how intense should they be?

Yes, exercise is generally recommended and highly beneficial for individuals living with Hereditary multiple exostoses (HME), as it helps maintain joint range of motion, muscle strength, and bone health. While high-impact activities may require caution due to the presence of bony outgrowths, a personalized, low-impact exercise program can significantly improve quality of life and functional independence.

Is exercise safe for those living with Hereditary multiple exostoses?

Living with Hereditary multiple exostoses often leads to concerns about physical activity due to the presence of osteochondromas (bony growths) near joints. However, complete avoidance of movement can lead to muscle atrophy and increased joint stiffness, which may exacerbate symptoms. For the 266 members of the DiseaseMaps community currently managing Hereditary multiple exostoses, movement is often a key component of pain management. Exercise helps support the joints affected by exostoses by strengthening the surrounding musculature, which acts as a protective "sleeve" for the skeletal system.

What types of exercise are recommended for Hereditary multiple exostoses?

The goal is to focus on low-impact activities that improve cardiovascular health and muscular endurance without placing excessive stress on the bony outgrowths. Beneficial activities often include:

• Swimming and Water Aerobics: These are ideal because the buoyancy of water reduces the load on weight-bearing joints, allowing for movement that might otherwise be painful.


• Cycling: Stationary or road cycling can improve leg strength and stamina while minimizing impact on the ankles and feet.


• Yoga and Pilates: These practices focus on controlled, deliberate movements that enhance flexibility and core stability, which is vital for postural support in patients with Hereditary multiple exostoses.


• Walking: Gentle, consistent walking on flat surfaces helps maintain bone density and overall fitness.

Which activities should be approached with caution?

While movement is encouraged, individuals with Hereditary multiple exostoses should generally avoid high-impact or contact sports that carry a high risk of direct trauma to the exostoses. Contact sports (like football or rugby) or high-impact activities (like long-distance running on uneven terrain) can cause painful irritation of the soft tissue surrounding the growths. Always listen to your body; if an activity causes sharp, localized pain or significant swelling, it is a signal to stop and reassess the intensity or technique.

How should I begin an exercise program safely?

Safety is paramount when starting any new routine. First, obtain medical clearance from your orthopedist or primary care physician, especially if you have had recent surgeries to remove symptomatic exostoses. It is recommended to use a "start low, go slow" approach. Begin with 10–15 minutes of light activity, and only increase your intensity or duration by 5–10% per week. On "difficult days" where pain or fatigue is higher, utilize pacing strategies: break your exercise into shorter, 5-minute sessions throughout the day rather than one long, taxing session.

What is the role of physical therapy in managing this condition?

A physical therapist familiar with skeletal dysplasias or Hereditary multiple exostoses is an invaluable partner. They can conduct a biomechanical assessment to identify specific joints that may be limited by exostoses and design a custom program to prevent compensatory movement patterns. Regular physical therapy sessions can ensure that your strength training is performed with proper form, protecting the areas where your bones are most sensitive.

Next steps

• Consult with an orthopedic specialist to identify which joints are most at risk for mechanical interference.


• Request a referral to a physical therapist who specializes in chronic musculoskeletal conditions.


• Join the DiseaseMaps community to share experiences and learn how others with Hereditary multiple exostoses adapt their fitness routines.


• Keep a symptom diary to track how different types of movement impact your pain levels over time.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment; always consult with your healthcare team before beginning a new exercise program.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Hereditary Multiple Exostoses.


• Orphanet: Multiple Osteochondromas (Entry 666).


• OMIM (Online Mendelian Inheritance in Man): Hereditary Multiple Exostoses (EXT1/EXT2).


• The MHE Research Foundation: Patient resources on physical activity and management.