Difference between hip resurfacing and total hip replacement. Where the surgeon recommends hip resurfacing, this will involve a reshaping of the damaged surface of the femoral ball, which will then be covered with a circular metal cap. This procedure can have limitations as it will only work for bone that has not been too damaged by arthritis. In general, hip resurfacing will not be carried out when patients have very serious arthritic conditions, as the bone may not be strong enough so there is some risk of it fracturing.
This means that hip resurfacing tends to be recommended for patients around 50 years of age or less. The current generation of surface replacements are metal-on-metal bearings. That means both the ball and the socket are made entirely of metal. Although this cuts down dramatically on the wear and tear of the components, it has been shown to cause metal ions to be dispersed through the body.
Cobalt and chromium ions are measurable in the blood stream, but have not been shown to cause cancer or any other disease in humans.
Although the metal ions are measurable, no one knows what a safe level is. Generally, people with functioning kidneys are able to excrete the ions in their urine. Because the bone of the femur is retained, it is possible to fracture it after surface replacement. Most of the fractures occur early in the post-operative period if too much weight is put on the leg too early.
The body needs time to adapt to the new prosthesis. Post-operatively, crutches are used for weeks to protect the amount of weight put on the leg. While not limited to surface replacement, working around the bone of the femur may cause extra pressure to be put on the nerves in the hip area. Surface replacement may require a somewhat larger incision and exposure than that of total hip arthroplasty.
As such, the hip resurfacing procedure may lead to extra bone forming around the hip, leading to stiffness, called heterotopic ossification. We take measures to prevent this, using either an anti-inflammatory medication or one dose of radiation to the hip area after surgery. The radiation treatment, known as XRT external radiation therapy , is performed in the first 2 days after surgery and does not have any association with cancer. Unfortunately, there is no available test to determine this before surgery.
Since all hip resurfacings are currently made of the same metals, there is a possibility of an allergic response to all resurfacing implants. Treatment may require the removal of the implant and revision surgery to a non-metal-on-metal hip replacement. At this time, it is not clear what limitations of activity patients with surface replacements should adhere to. With traditional bearing surfaces such as polyethylene or ceramics, repetitive impact has been associated with accelerated wear and even potential catastrophic breakage.
Whether this will occur with the current metal-on-metal bearings such as those used in surface replacements is not known. The short term results year follow-up of hip resurfacing are encouraging. However, the early failures of hip resurfacing appear to be greater than for total hip replacement 2.
Whether the newer forms of hip resurfacing will be successful long term is unknown. However, it may require 10 years or longer to determine whether this newer form of hip resurfacing is as good as total hip replacement at comparable time intervals. Pavel Balduyeu, to their This five-year agreement, initiated on Nov.
Call Now Corona Virus Policy. What is a Hip Replacement? What is Hip Resurfacing? The Advantages of Hip Resurfacing There are many advantages of hip resurfacing, such as: It preserves the femoral neck and femoral canal and minimizes bone removal while using a smaller implant.
Types of Hip Treatment For hip pain, there are several forms of treatment that can be used to relieve pain. Related Posts. November 1, October 7, October 6, September 30, September 9, September 1, August 30, August 27, August 10, July 26, July 22,
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