Hip Replacement Implant Surgery In India At Affordable Low Cost
Hip Replacement Implant
Hip Replacement Implant Options
Hip replacements are among the most common orthopedic procedures. When a hip replacement is performed, the arthritic, damaged hip joint is removed. The ball-and-socket hip joint is then replaced with an artificial implant. The materials used in the implant depend on several factors, including the age of the patient, the activity level of the patient, and the surgeon’s preference.
Total hip joint replacement is an orthopaedic success story, enabling hundreds of thousands of people to live fuller, more active lives….
Implant Construction
Many people credit Sir John Charnley, a British orthopaedist, with performing the first modern total hip replacement. His innovations included combining a metal stem and ball with a plastic shell and using a methacrylate cement to hold the devices in place.
Today, the stem portions of most hip implants are made of titanium- or cobalt/chromium-based alloys. They come in different shapes and some have porous surfaces to allow for bone ingrowth…
All the materials used in a total hip replacement have four characteristics in common :
- They are biocompatible. They can function in the body without creating either a local or a systemic rejection response.
- They are resistant to corrosion, degradation, and wear. Therefore, they will retain their strength and shape for a long time. Resistance to wear is particularly significant in maintaining proper joint function and preventing the further destruction of bone caused by particulate debris generated as the implant parts move against each other….
Implant Insertion
During a total hip replacement surgery, the orthopaedic surgeon will take a number of measurements to ensure proper prosthesis selection, limb length, and hip rotation. After making the incision, the surgeon works between the large hip muscles to gain access to the joint.
The femur is pushed out of the socket, exposing the joint cavity. The deteriorated femoral head is removed. The acetabulum is prepared by cleaning and enlarging it with circular reamers of gradually increasing size. The new acetabular shell is implanted securely within the prepared hemispherical socket. The plastic inner portion of the implant is placed within the metal shell and fixed into place.
Cemented Total Hip Replacement
Over the past 40 years, there have been many improvements in both the materials and the methods used to hold the femoral and acetabular components in place. Today, the most commonly used bone cement is an acrylic polymer called polymethylmethacrylate (PMMA).
A patient with a cemented total hip replacement can put full weight on the limb and walk without support almost immediately after surgery, resulting in a faster rehabilitation. Although cemented implants have a long and distinguished track record of success, they are not ideal for everyone….
Cementless Total Hip Replacement
In the 1980s, new implant designs were introduced to attach directly to bone without the use of cement. In general, these designs are larger and longer than those used with cement.
They also have a surface topography that is conducive to attracting new bone growth. Most are textured or have a surface coating around much of the implant so that the new bone actually grows into the surface of the implant…
Hybrid Total Hip Replacement
A hybrid total hip replacement has one component, usually the acetabular socket, inserted without cement, and the other component, usually the femoral stem, inserted with cement. This technique was introduced in the early 1980s, so long-term results are just now being measured. A hybrid hip takes advantage of the excellent track records of cementless hip sockets and cemented stems.
Partial Hip Replacements
If only one part of the joint is damaged or diseased, a partial hip replacement may be recommended. In most instances, the acetabulum is left intact and the head of the femur is replaced, using components similar to those used in a total hip replacement. The most common form of partial hip replacement is called a bipolar prosthesis.
Hip Resurfacing
A newer technique for hip replacement that has recently emerged is called hip resurfacing. In this procedure, the socket is replaced similar to a total hip replacement. The femur, however, is covered or “resurfaced” with a hemispherical component. This fits over the head of the femur and spares the bone of the femoral head and the femoral neck. It is fixed to the femur with cement around the femoral head and has a short stem that passes into the femoral neck.
Longevity and Outcomes
Hip replacement operations are highly successful in relieving pain and restoring movement. However, the ongoing problems with wear and particulate debris may eventually necessitate further surgery, including replacing the prosthesis (revision surgery). Men and patients who weigh more than 165 lb have higher rates of failure. The chance of a hip replacement lasting 20 years is approximately 80%….
What Type of Hip Replacement Implant is Best ?
There are many orthopedic manufacturing companies that produce different implants used in hip replacement surgery. Most of these companies make several different hip replacement prostheses. Is there a way to determine which hip replacement implant is best?…
The Bottom Line
I recommend that patients and surgeons select an implant that fits the following criteria : -
- The implant has a reasonable track record of use (minimum of 5 to 10 years
- The surgeon has used the implant before
- It is appropriate for the patient’s condition
- The implant has a reasonable track record of use (minimum of 5 to 10 years
- The surgeon has used the implant before
- It is appropriate for the patient’s condition
- If you have questions about a specific implant, ask your doctor about the hip replacement prosthesis. Ask your surgeon to compare it to the implant he or she usually uses.
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EnBIO’s CoBlast Process being used to coat an Orthopaedic Hip Implant
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