Hip bursitis is often caused by repetitive stress or injury. Gentle yoga positions can help the pain by stretching and strengthening the surrounding muscles.

For runners experiencing pain in the joint of a big toe, the likely cause is hallux rigidus. A type of osteoarthritis, this injury can temporarily stop a runner's training regimen or, in serious instances, can mean a permanent end to running.

A tight heel cord, known as the Achilles tendon, and tight hamstrings limit your range of motion. Learn how to alleviate the discomfort.

The quadriceps are a set of four muscles on the front of your thighs. Keep them strong to maintain function in your legs and knees.

Fluid on the knee is known as a knee effusion. Joints naturally contain some fluid to help lubricate and cushion the joint while you move. However, certain conditions can lead to an excess buildup of fluid. When this happens, the knee can swell and become painful and stiff.

Knee pain is common -- especially in athletes who run and jump a lot. Exercises can relieve pain and weakness that often accompany this condition.

Gout forms when uric acid, a byproduct of purine breakdown, builds up and inflames the joints. Purine occurs naturally in many foods, including meat, cheese and fish. Strawberries provide an excellent source of vitamin C, which minimizes the risk of gout, recent research indicates.

Calcific tendonitis happens when calcium deposits in the shoulder cause one of the tendons to become inflamed, which limits range of motion and may be painful. You may experience calcific tendonitis in both or just one of your shoulders.

The radial head is a commonly fractured bone of the elbow joint. Primary treatment of radial head fractures can be non-operative if there is minimal displacement of the fragments.

Acupuncture is a therapy that involves inserting thin needles into specific points on the body to elicit a specific reaction. Although a variety of acupuncture styles exist, much of the acupuncture used in the United States is based on traditional Chinese medicine theory.

A snapped or ruptured Achilles tendon affects the back of your ankle. It most commonly occurs as a sports injury. If you suffer damage to your Achilles tendon, you may feel a sudden “pop” in your ankle. You will then be unable to walk properly. The rupture can be full or partial and usually requires surgery.

People with degenerative types of arthritis, such as osteoarthritis and rheumatoid arthritis, typically experience a gradual onset of joint pain and stiffness. Acute forms of arthritis, however, develop suddenly.