A total hip replacement (THR) - also called a hip arthroplasty- is a surgical procedure that re-forms the hip joint.
A total hip replacement (THR) - also called a hip arthroplasty- is a surgical procedure that re-forms the hip joint.
In THR, the head of the femur (the bone that extends from the hip to the knee) is removed along with the surface layer of the socket in the pelvis (the two large bones that rest on the lower limbs and support the spinal column).
For nearly a century, doctors have been putting various materials into diseased and painful hip joints to relieve pain. Up until the 1960s, outcomes had been unreliable. At that time, the metal ball and plastic socket for the replacement of the hip joint was introduced. Today, the artificial components used in THR are stronger and more designs are available.
Socket:made up of either only plastic (high density polyenthelence) or outer metal shell and inner linear of plastic,metal
or ceramic
Stem & Ball: Made of strong stainless metal or ceramic for nearly a century,doctors have been putting various materials in
to diseased and painful hip joint to relieve pain. Up until the 1960s, outcomes had been unreliable. At that time, the
metal ball and plastic socket for the replacement of the hip joint was introduced.Today the artificial component used in
THR are stronger and more designs are available.
our joint replacement surgeon takes into consideration many factor like your age,activity level, amount of hip damage and
your bone quality to decide about best combination of the two artificial components.
conventionally the hip prostheses is implanted into healthy portion of the pelvis and the thigh bone and fixed rigidly with help of a "glue like substance" called bone cement (methylmethacrylate). This construct function for 12-15 years after which time the cement starts crumbling and so its life span has this limitation.Alternatively a new hip prosthesis has been developed that does not require cement. This hip has the potential to allow bone to grow into it, and therefore can last longer than the cemented hip.This is an important consideration for the younger patient. In some cases, only one of the two components(socket or stem) may be fixed with cement and the other is cementless.This would be called a "Hybrid" hip hypothesis.