What Is a Hip Replacement?
Hip replacement, or arthroplasty, is a surgical procedure in which the diseased parts of the hip joint are removed and replaced with new, artificial parts. These artificial parts are called the prosthesis. The goals of hip replacement surgery include increasing mobility, improving the function of the hip joint, and relieving pain.
Our hip joint is called a ball and socket joint because of its structure. It is formed by the head of the Femur (thigh bone) and the acetabulum of the pelvis (the hip bone). The dome-shaped head of the femur for acetabulum. The hip joint is a very strong joint, due to the tight fitting of the bones and the strong surrounding ligaments and muscles. Some conditions may cause severe pain in hip joint and may affect the mobility.
Some of the most common causes for a hip pain are arthritis, Trochanteric Bursitis, Tendonitis, Osteonecrosis, Lumbar Pain, Snapping Hip Syndrome, Muscle Strains, Hip Fracture and Stress Fracture. The most common cause for a Hip Replacement surgery is the arthritis.
Risks of hip replacement surgery
- Complications of a hip replacement can include:
- hip dislocation
- infection at the site of the surgery
- injuries to the blood vessels or nerves
- a fracture
- differences in leg length
The diagnosis of a hip pain starts with medical history taking by your doctor. Here the doctor tries understanding the cause for pain as well as reviewing any other underlying complaints. Observation of the hip at rest and while standing or walking, palpation (or feeling) of the hip and surrounding structures, testing for range of motion and strength, and checking for sensation and pulses all may be done. Few blood tests may also be ordered.
The most common imaging technique used in the diagnosis of a hip pain is X-ray. Other imaging like CT scan or a MRI scan may also be used.
Type of Total Hip Replacement (THR)
Conventional total hip replacement is a prosthesis that is anchored in the upper part of femur (thighbone).
In a short stem hip replacement, the prosthesis on the femoral side is very small in comparison. It is anchored only in the spongy bone. It is uncemented. This is a bone preserving hip replacement.
Anchorage method can be either cemented or uncemented. Prostheses that are anchored with bone cement are cemented hip replacements. Those prostheses, which rely on natural bony ingrowth for anchorage, are uncemented hip replacement. Natural bone in growth is encouraged by various coatings to the stem.
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