Hip is the part of the human body where the thigh bone joins with the hip bone. In this joint the ball like top part of the thigh bone swivels in the socket like acetabulum which is situated in the pelvis.
Arthritis or sudden heavy pressure applied in accidents of sports activity may damage the cartilage covered portion of the hip joint which can cause severe pain and damage to the hip joint. The same could also be a result of a condition called avascular necroses of hip which results from damage to blood supply of femoral head(ball) due to various factors ultimately leading to collapse of the femoral head and severe arthritis in terminal stages.The only solution to this devastating situation is removal of the existing hip joint by a prosthetic hip joint.
Hip replacement surgery is a very successful and common procedure adopted by the orthopedic surgeons all over the world. In this surgery the femoral ball of the thigh ball is replaced by synthetic ball and is allowed to articulate in a prosthetic socket connected to the pelvic bone. Such a replacement of the hip has been found to be very successful and pain relieving to almost all of the patients who had undergone such surgeries. For 90% of the patients it has been found to be functioning satisfactorily for 10 years and for 80% of patients the success period is 20 years.
When a replaced hip wears out in course of time, a revision hip replacement becomes unavoidable. Unfortunately the revision hip replacement is not an easy matter and there can be many complications in the revision hip replacement surgeries. So surgeons delay hip replacement surgeries to the maximum possible extent so that the necessity for revision hip replacement may not surface. But if ceramic prosthesis is used in the initial hip replacement surgery it is found that they last longer and revision hip replacement surgery is not necessitated as they last over the life time of the patient.
Hip replacement in younger people is found to erode faster than in older people because the wear and tear in their case will be more than that in the case of less active older people. It has been found that the wear and tear of plastic prostheses is at the rate of 0.1 mm per year. As the ceramic prostheses are the latest entrant in this arena, the exact rate of wearing of this material is not available now. But it has been found that the rate of wear of ceramic prostheses is only 0.32 mm per 3 million cycles of abrasions.
So ceramic hip replacement is the most suitable method for younger people in the age group of 40 – 50, as they last longer and the complicated revision hip replacement surgeries are not necessitated in this case. But there is no scientific data to prove how long they will stand without erosion. It is expected that they will stand for about 30 years as their use in other orthopedic departments had given ample data to prove their superiority above plastic and metal implants.