Transient osteoporosis of the hip is a rare condition that causes bone loss temporarily in the upper part of the thighbone (femur). It is mostly found in young or middle aged men between the ages of 30 and 60, and women in their later stages of pregnancy or early postpartum period (following childbirth). It is characterized by abrupt onset of pain that increases with activity.
The hip joint is a ball-and-socket joint. A part of the pelvis bone known as the acetabulum forms the socket and the upper end of the femur, known as the femoral
head, forms the ball. In patients with transient osteoporosis of the hip, the femoral head loses its density and strength and becomes more prone to breaking.
An exact cause is unknown. Some of the proposed causes include atypical mechanical stresses acting on the hip joint, hormonal abnormalities, and blockage of some of the small blood vessels surrounding the hip joint.
Symptoms may include
Diagnosis of transient osteoporosis of the hip often begins with a history and physical examination. Your doctor may ask you questions related to your general health and any previous accidents or injuries. You will be asked to perform various range-of-motion exercises in order to replicate your pain. Most patients experience acute pain with weight bearing and active range of motion and minimal pain when the doctor moves the hip for them (passive range of motion). This is one of the indicators in the diagnosis of transient osteoporosis of the hip.
You will also be recommended to undergo imaging studies such as X-rays, CT scans, MRIs, or nuclear scans in order to further document transient osteoporosis of your hip.
Most patients with transient osteoporosis of the hip are found to have bone marrow oedema. Bone marrow oedema is a condition where fluid builds up in the bone marrow (spongy material located in the hollow of the long bones) and the bone marrow becomes inflamed. MRI scans have been found to be particularly beneficial in
documenting bone marrow oedema and are one of the most practicable studies in the diagnosis of transient osteoporosis of the hip.
Transient osteoporosis of the hip resolves on its own and treatment involves preventing any damage to the weakened bones and minimizing the symptoms and discomfort. Treatment includes
Some of the instructions that you will be given with regard to incision care include:
Caring for the patient will include various methods of helping the patient control post-surgical pain.
Recognizing and preventing complications
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