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Hip replacements are made of different parts.
The stem (portion that goes into the thigh bone)
The head and cup (the bearing surface)
The socket (portion that holds the cup into the pelvis).
The stem is always metal. Usually a cobalt chrome alloy. This may either be coated with titanium or a cermaic such as hydroxyapatite (rough surface) which allows bone to grow onto the stem and hold it fixed in place. Or the stem can be highly polished and cemented in place with polymethylmethacrylate cement.
The socket can either be all polyethylene (usually UHMWPE) and cemented into the pelvis directly (i.e. the cup and socket are one), or the socket can be metal and bond to the pelvis in the same way as the rough stems, with or without the use of screws.
The bearing surface (ball and cup) can vary -
The ball can either be metal or ceramic (alumina), and the socket can either be metal, ceramic or polyethylene (UHMWPE). The polyethylene cups can either be an all in one cup/socket, or a polyethylene liner to a metal socket.
The bearing combinations typically used are:
Metal on polyethylene
Metal on Metal
Ceramic on Ceramic
Ceramic on polyethylene
All have their pros and cons.
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Why does your hip replacement joint squeak?
You should have your hip checked annually with an x-ray to look for wear. Squeaking can also be linked to ceramic on ceramic implants.
What wears your first in an artificial hip?
If the hip has been put in well, then the cup usually wears first (if made of Polyethylene), it is probably more equal with ceramic bearings
What are hip prostheses made of?
Hip prostheses may be made of metal, ceramic, plastic, or various combinations of these materials.
Are screws used in hip replacement?
A surgeon will often use screws to secure the cup into the acetabulum.
Are an example of a ceramics?
the examples of ceramic materials are: 1. ceramic art 2. ceramic 3. ceramic classfication 4. ceramic wall 5. ceramic material 6. ceramic man made
What is the future for hip replacements?
The latest and most lauded advances and improvements in hip surgery procedures is the use of minimally invasive techniques. These techniques include incisions that disturb fewer of the muscles and tissues and replacements made of ceramic which are more resistant to wear,
What is a hybrid hip replacement?
A hip replacement consist of a cup, and a stem (that sits in the femur). Typically a surgeon will either press fit a hip replacement in (fit in tight, and allow the bone to grow into it), or use a bone cement to secure the implant in position. A hybrid typically means he will cement one component in, and press fit the other.
What procedure is involved in hip replacement surgery?
A total hip replacement surgery involves 3 kinds of the prosthesis. The first is a cup that is used to replace the hips socket. The next is a ball that replaces the head of the thigh bone and finally, there is a stem that is attached to the thigh bone. These 3 together are responsible for the movement of the hip. In some cases, not every part will be damaged. Joint replacement is an option for those who have suffered injury or conditions such as osteoarthritis. When the pain in the joints limits a person’s daily activities and does not seem to be responding to conservative treatment, joint replacement surgery is recommended. Several factors increase the risk of weakening your joints such as hereditary, trauma, obesity, repetitive injuries, etc. Ranka Hospital, Pune provides facilities for hip replacement.
What are the treatments for hip dysplasia?
Hip resurfacing or total hip replacement
What happens during hip replacement surgery?
During hip replacement surgery the doctor saws the thigh bone to access the ball part of the joint which is then removed and replaced with a man made ball joint.
Which is best metal or ceramic hip replacement?
There are quite a few variables here 1. There are two versions of each. Metal on metal and metal on polyethylene and ceramic on ceramic and ceramic on polyethylene 2. Polyethylene wears out quicker then either metal or ceramic 3. There is currently a massive recall of metal on metal hip implants. These tend to shed minute particles which can cause rejection of the implant and can enter the bloodsream. The plus side for metal on metal is that they can use larger cups (pelvis side of the joint) which means they are less likely to dislocate. Though rate of dislocation will depend on other factors as well e.g. surgical approach used. 4. Ceramic has a long life span but in a few cases makes a horrible squeaking noise and in even rarer cases they can shatter - known as catastrophic failure! Like metal on metal they can use a larger cup size. Ceramic and ceramic is probably now the current favourite If I had to chose I'd definitely go for ceramic on ceramic.
Best Hip replacement surgeons in Chennai?
Hip Replacement or hip arthroplasty is a surgical procedure to treat the damaged portion of the hip. A person who performs this procedure by making certain incisions to remove the damaged part of the hip and replacing them with prosthetic implants is a Hip Replacement surgeon.
