FROM OUR EXPERTS
Doesn't it seem odd that after 30 or more years using ceramic implants for hip replacements that suddenly there is an increased number of patients reporting squeaking when they move? And this new problem only started in 2006. What's going on? Some experts have suggested it's a problem with mismatched ceramic bearing diameters, malpositioning of the implant, or loss of the protective fluid film. Others have investigated the possibility that the use of short necks in the femoral component or wear debris from metal pinching against other metal could cause this problem. In this study, the authors show that metallosis caused by impingement (pinching) of the femoral neck against the rim of the acetabulum (hip socket) is the most common cause of squeaking. Metallosis refers to wear debris from the metal parts of the implant. It can cause a painful inflammatory reaction in the soft tissues and bone around the implant. There were two parts to the study. First, they looked at what happened to 1,27...
Even though hip joint replacements are available, doctors sometimes fuse the joint instead. This is often the case with young patients who have severe hip damage on one side. Most of the time, the damage is related to some form of arthritis. Sometimes an accident or injury leads to infection and destruction of the hip joint. Tuberculosis that affects the bones is another cause of hip joint problems. Doctors try to fuse the joint in a way that still allows the patient to change or convert to a new joint later on. Most hip fusions last at least 25 years before conversion to a new joint. When the patient has back, hip, or knee pain that gets in the way of everyday life, it may be time to convert the fusion. The conversion from a fused joint to a new hip joint is difficult. An experienced surgeon is needed. Even then, problems after the operation can occur. Complications after conversion include nerve damage, infection, loosening of the implant, and hip dislocation. Rarely, a bone may fract...
Hip joint replacement is surgery to replace all or part of the hip joint with an artificial joint. The artificial joint is called a prosthesis .
Hip arthroplasty; Total hip replacement; Hip hemiarthroplasty
The artificial hip joint has four parts:
A socket that replaces your old hip socket. The socket is usually made of metal.
The liner, which fits inside the socket. It is usually plastic, but some surgeons are now trying other materials, like ceramic and metal. The liner allows the hip to move smoothly.
A metal or ceramic ball that will replace the round head (top) of your thigh bone.
A metal stem that is attached to the shaft of the thigh bone to make the joint more stable.
You may receive general anesthesia before this surgery. This means you will be unconscious and unable to feel pain. You may have a spinal or epidural anesthesia. In this kind of anesthesia, medicine is put into you...
You should know
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