Over the past several years it has become clear that the long-term survival rates of cementless total hip replacement cannot match those of total cemented prostheses.
However, recent studies have shown good long-term results for cementless acetabular cups. Therefore, the number of procedures using a cementless cup in combination with a cemented stem - so-called 'hybrid' operations - is on the increase.
The bipolar hip operation is usually performed on older patients suffering from a dislocated servical fracture. The operation is swift, and the patient can start the rehabilitation program the next day.
To find out more about implants, please visit the Joint Replacement pages.
Preoperative planning, positioning of the patient and incision
See appropriate sections under Total hip replacement.
For implantation of a non-cemented acetabular cup, perform reaming as in a total hip procedure. Underreaming according to the manufacturer's instructions is essential. No bone bed preparation such as brushing and pulse lavage is performed. Impact the metal shell and use additional screws if necessary. Insert the liner.
Note that for implantation of a bipolar head, no reaming or bone bed preparation is performed on the acetabular side. It is mandatory to select the appropriate size to fit the natural acetabulum.
For the Modern Cementing Technique procedure on the femur, please see appropriate sections under Total hip replacement.
See Total hip replacement