Exercising with knee or hip pain

If you deal with knee and hip pain, it may be time to up your exercise game. More than just a good health habit, exercise is also an effective treatment for many knee and hip problems. And exercises that can strengthen muscles supporting knees and hips can be especially helpful.

Strong muscles around a damaged knee or hip can help support a joint by taking over some of its responsibilities. For example, your hips will have an easier time supporting your body weight if your quadriceps, gluteals, hamstrings, and abdominal muscles are strong. And strong quadriceps and hamstrings can take over some of the shock-absorbing role played by the meniscus and cartilage in the knee.

Balance is important to keep in mind. The proper balance of strength in the muscles can hold the joint in the most functional and least painful position. Muscles work in pairs: one contracts while the opposing one relaxes. For example, when you straighten your knee, your quadriceps on the front of your thigh contracts, and the hamstrings on the back relax. Imbalances in the function of paired muscles can cause joint problems and invite injury.

If your hamstrings are tight, your quadriceps can't contract fully and may weaken, so exercise the quadriceps and hamstrings (the opposing muscles) equally. Flexibility exercises (to stretch and relax specific muscles) are an important part of an exercise plan to improve joint function.

How to go easier on the joints

If you have knee or hip problems, choose your exercise carefully. Running or fast walking on hard sidewalks or pavement is tough on joints. If you love these activities, try doing them on a track or treadmill and wear well-cushioned shoes to lessen the impact. Better still, consider swimming or cycling, which are easier on your joints.

Exercise in the water has special benefits:

• The water supports your weight, reducing stress on your joints.
• You can try out exercises in a supported environment before doing them on solid ground.
• An 85° F pool is comfortable for exercise and soothes joints.
• You can increase range of motion and endurance without strenuous effort or joint pain.

Be sure to do leg resistance exercises two to three times per week to strengthen supportive muscles around the knees. Strengthening muscles through these activities will dampen stresses that travel through the knee.

For more on strategies for pain-free knees and hips, plus a Special Bonus Section on knee and hip replacement, read  Knees and Hips , a Special Health Report from Harvard Medical School. 

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