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Trochanteric Bursitis

  
  

A common spot for bursitis is on the side of the hip. Here, a large tendon passes over a bony prominence on the side of the hip called the greater trochanter.  Inflammation in the bursa between the tendon and the greater trochanter is called trochanteric bursitis. This problem is more common in older individuals. It may also occur in younger patients who are active in exercises such as walking, running, or biking.

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Relevant Anatomy
The hip joint is one of the true ball-and-socket joints of the body. The hip socket is called the acetabulum and forms a deep cup that surrounds the ball of the upper thigh bone (femur), or femoral head. Thick muscles of the buttock at the back and the thick muscles of the thigh in the front surround the hip.
The greater trochanter is the large bump on the outside of the upper end of the femur. This bump is the point where the large buttock muscles that move the hip connect to the femur. The gluteus maximus is the largest of these muscles. It attaches lower down on the femur.
At locations where friction occurs between muscles, tendons, and bones, there is frequently a structure called a bursa. A bursa is a thin sac of tissue that contains fluid to lubricate the area and reduce friction. The bursa is a normal structure. The body will even produce a bursa in response to friction.

Bursitis
Sometimes a bursa can become inflamed (swollen and irritated) because of too much friction or because of an injury to the bursa. An inflamed bursa can cause pain because movement makes the structures around the bursa rub against it.
Friction can increase in the bursa during walking if the long tendon on the side of the thigh is tight. It is unclear what causes this tightening of the tendon. The gluteus maximus attaches to this long tendon. As you walk, the gluteus maximus pulls this tendon over the greater trochanter with each step. When the tendon is tight, it rubs against the bursa. The rubbing causes friction to build in the bursa, leading to irritation and inflammation. Friction can also start if the outer hip muscle (gluteus medius) is weak, if one leg is longer than the other, or if you run on uneven surfaces.
Most cases of trochanteric bursitis begin gradually with no obvious underlying injury or cause. Trochanteric bursitis can occur after artificial replacement of the hip joint or other types of hip surgery. The cause may be a combination of changes in the way the hip works, the way it is aligned, or the way scar tissue has formed from the healing incision.

Symptoms
The first symptom of trochanteric bursitis is usually pain. The pain can be felt in the area of the hip right over the bump that forms the greater trochanter. Eventually the pain may radiate down the outside of the thigh. As the problem progresses, the symptoms produce a limp when walking and stiffness in the hip joint. Eventually, the pain will also be present at rest and may even cause a problem with sleeping.

Diagnosis
The diagnosis of trochanteric bursitis begins with a history and physical examination. This is usually all that is necessary to make the diagnosis.  A physical examination will be done to determine how much stiffness you have in the hip and if you have a limp. Once this is done, X-rays will most likely be ordered to make sure that there are no other abnormalities in the hip.

Treatment
The treatment of trochanteric bursitis usually begins with simple measures. Treatment becomes more involved if simple measures fail. The vast majority of patients with trochanteric bursitis will never require surgery.

Nonsurgical Treatment
Trochanteric bursitis is often treated successfully without surgery. Younger patients who have this condition because of overuse can usually be treated by reducing their activities or changing the way they do their activities. Combining this with an exercise program of stretching and strengthening and perhaps a brief course of anti-inflammatory medications will frequently resolve the problem.
Your physician may also prescribe sessions with a physical therapist. Treatments are used to calm inflammation and may include heat or ice applications. Therapists use hands-on treatment and stretching to help restore full hip range of motion. Improving strength and coordination in the buttock and hip muscles also enables the femur to move in the socket smoothly and can help reduce friction on the bursa. You may need therapy treatments for four to six weeks before full motion and function return.
If rehabilitation fails to reduce your symptoms, an injection of cortisone into the bursa may ease your symptoms and give temporary or permanent relief of the condition. Cortisone is a powerful anti-inflammatory medication. It can reduce swelling and pain when injected directly into the bursa.

Surgery

Surgery is rarely needed to treat trochanteric bursitis. When all conservative measures fail and the pain is disabling, your doctor may recommend surgery. Several types of surgical procedures are available to treat trochanteric bursitis.
The primary goal of all procedures designed to treat this condition is to remove the thickened bursa, to remove any bone spurs that may have formed on the greater trochanter, and to relax the large tendon of the gluteus maximus. Some surgeons prefer to simply lengthen the tendon a bit, and some prefer to remove a section of the tendon that rubs directly on the greater trochanter. Both procedures give reasonably good results.

 

-Plante

 

 

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