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There are hundreds of bursas in the human body, especially in the joints of the shoulder, hip, knee, and ankle. These small sacs of fluid cushion the places where tendons, ligaments, and muscles move over bones. When this bursal sac becomes inflamed, each time the tendon has to move over the bone, it causes strong pain. Although trochanter bursitis usually affects middle-aged or elderly persons, it can develop in younger people too. The good thing is that most people with trochanteric bursitis respond very well to treatment.
Trochanteric bursitis is relatively common among both physically active and sedentary patients. It can also occur as a complication of arthroscopic surgery of the hip. The overall complication rate is estimated at 1.4%. The fact is that neither racial, sex nor age predilection has been reported.
Normal Anatomy Of The Hip Joint
The thighbone, the longest and strongest bone in the body, is known anatomically as the femur. There is a large protrusion at the top of this bone known as the femur head. This ball-shaped section of bone forms a ball-and-socket joint.The trochanter is a palpable protrusion at the top of the femur, extending laterally in the direction of the hip. Because a number of muscles attach to this anatomical part, there are many bursas cushioning the sensitive interfaces between them and the bone.
Symptoms Of Hip Bursitis
There are many symptoms that could be associated with this condition.
Some of those are:
- The most common symptom is strong hip pain, and sometimes buttock pain that spreads down the outside of the thigh to the knee area. Several researches have proven that pain may be worse during activities such as walking, running, or sitting cross-legged with the leg over the opposite knee.
- Tenderness when you press on the affected area or lie on the affected side.
- Swelling from increased fluid within the bursa.
- Redness and warmth (from inflammation or infection).
- Overlying skin changes with abrasions may occur with recent trauma.
Possible Causes Of Hip Bursitis
Hip bursitis is most often caused by a repetitive, minor impact on the area or by a sudden, more serious injury. It is more common in women and in middle-aged or elderly people. Bursitis typically results from one or more of these factors:
- Acute trauma, such as a fall or tackle, causing the patient to land the lateral hip region
- More commonly, repetitive trauma is involved. Such trauma is caused by the repetitive contracture of gluteus medius and/or the iliotibial band during running or walking.
- Conditions that predispose patients to this bursitis include underlying lower leg gait and back or sacroiliac disturbances.
- At times, the bursitis develops spontaneously without apparent precipitating factors.
- Play or work activities that cause overuse or injury to the joint areas
- Stress on the soft tissues from an abnormal or poorly positioned joint or bone
- Previous surgery around the hip or prosthetic implants in the hip.
- Hip bone spurs or calcium deposits in the tendons which attach to the trochanter.
The inflammation of the affected bursa between the femoral trochanteric process and the gluteus medius/iliotibial tract may be due either to acute or repetitive (cumulative) trauma. Acute trauma includes contusions from falls, contact sports, and other sources of impact. Repetitive trauma includes bursal irritation due to friction by the iliotibial band, which is an extension of the tensor fascia lata muscle. Such repetitive, cumulative irritation often occurs in runners but can also be seen in less active individuals. Other predisposing factors include leg length discrepancy, hip abductor weakness, and lateral hip surgery.
It is proven that there are several other conditions that could mimic the symptoms of trochanter bursitis. Some of those are:
Arthritis is among the most frequent causes of hip pain.
Tendonitis can occur in any of the tendons that surround the hip joint.
This is a specific condition that occurs when blood flow to an area of the bone is restricted. If an inadequate amount of blood flow reaches the bone, the cells will die and the bone may collapse.
Lumbar Pain - Referred Symptoms
Many back and spine problems can cause symptoms around the buttocks and hip. The most common problems that refer pain to the hip region are herniated discs and sciatica.
Snapping Hip Syndrome
Snapping hip syndrome is characterized by band snapping over the outside of the thigh, deep hip flexor snapping over the front of the hip joint and tearing of the cartilage, or labrum, around the hip socket which can cause a snapping sensation.
Strains of the muscles around the hip and pelvis can cause pain and spasm.
Hip fractures are most common in elderly patients with osteoporosis.
Diagnosis Of Trochanter Bursitis
Disorders of the hip are diagnosed by direct physical examination. The patient is usually lying on his or her side or back and mild pressure is placed over the ridge of the greater trochanter. This maneuver usually elicits pain that becomes more powerful with external rotation of the hip. The doctor should also ask the patient about his medical history, especially information concerning previous surgery involving the trochanter.
X-rays are often used, and many times calcium deposits or bony spurs are seen.
A rheumatological evaluation is also very important primary to rule out some other disorders, such as fibromyalgia. It may especially be necessary if the patient has a history of multiple tendon disorders such as shoulder bursitis or low back pain. Fibromyalgia is a common rheumatic syndrome that causes pain and weakness in the muscles.