Hip Replacement Surgery (Hip Arthroplasty) for hip arthritis has developed throughout the last 300 years from rudimentary surgery, to modern total hip replacement. This animation demonstrates a total hip replacement using Femoral Neck Preserving Implants.
The key defining feature of minimally invasive hip surgery compared with traditional hip surgery is the surgical approach taken. In minimal invasive hip surgery the surgeon does not have to cut muscles in order to access the hip. Rather than accessing the hip from the posterior (back) or laterally (side), the surgeon approaches the hip from the anterior (front), sparing the muscles of the glute.
During surgery the patient is placed supine (on their back), on a specialised operating table that enables the surgeon to perform the hip replacement anteriorly. Flouroscopic imaging is used throughout the surgery to ensure the accuracy of component positioning and to minimise leg length inequality.
An incision approximately 10cm long is made to the front of the hip. The muscles are then pushed aside to access the hip joint to begin the replacement. At no time during the surgery are any muscles cut.
The femur is separated from the acetabulum (hipbone socket).The acetabulum is prepared using a specialised instrument called a reamer. The acetabular component is then inserted into the socket. This is sometimes reinforced with screws or occasionally cemented.
A liner which can be made of plastic, metal or ceramic material, is then placed inside the acetabular component.
The arthritic femoral head is cut off and the bone prepared.
The femoral component is then inserted into the femur. The real femoral head component is then placed on the femoral stem. This can be made of metal or ceramic. The artificial components are fixed in place.
The incision is then closed and dressed.