Prosthesis is a term used in case of an artificial replacement for any missing part of the body; also it can be used to describe replacing a missing muscle or bone inside of the body, i.e., an implant. In simpler terms, prosthesis is used to mimic or copy the part of the body which is missing or damaged due to some health condition. Similarly, a hip replacement prosthesis or hip prosthesis is used in a hip replacement surgery (hip arthroplasty) where an orthopedic surgically removes a painful damaged hip joint and replaces it with an artificial one. Research on hip prosthesis market says that there are three types of hip replacement procedures such as hip resurfacing, total hip replacement (THR), and partial hip replacement. Hip prosthesis is used in case of an accident wherein the hip joint is damaged or irreparable, affected due to arthritis, avascular necrosis (AVN), or osteoporosis. The artificial hip joint is made from plastic and metal components. This surgery is usually performed when all the other options tried to relieve the pain have failed. The process helps in alleviating the pain and makes everyday activity effortless. Hip replacement surgery is performed on almost any age; however it is most common amongst people between 60 to 80 years of age. A modern improved hip prosthesis is made in such a way that it lasts for at least 15 years. Most patients after the surgery undergo a considerable reduction in pain and to an extent enhanced range of movement.
Different types of Hip Prosthesis
Some of the FDA approved hip prosthesis which is presently used in hip replacement surgeries are as follows:
Metal on Metal (MOM) – both the metal ball meant to fit into a metal socket, along with a metal stem which is drilled and fixed in the femur (thigh) bone. The metals used for MOM prosthesis are made of titanium, stainless steel, cobalt, and chromium.
Metal and polyethylene on Polyethylene (MOP) – polyethylene is a kind of plastic, these hip prosthesis generally comprise of plastic liner and metal structural pieces where the socket and ball meet. It can also sometimes be a metal ball that fits in a plastic socket liner.
Ceramic on Ceramic (COC), Ceramic on Metal (COM), and Ceramic on Polyethylene (COP) – ceramic hips are more expensive and are manufactured of specifically designed and more durable versions. There are ceramic on ceramic, ceramic on metal, and ceramic on polyethylene variants. Even though these are durable, they are more susceptible to breaking and fracture under big stress.
Disclaimer: The information given in this write-up is purely for educating the reader. It is not meant to be a substitute for any advice from a medical expert.