Ceramic Femoral Head Prosthesis

If the ceramic femoral head is being used with a previously implanted stem use the goldberg1 scale to determine if the condition of the trunnion is tolerable or intolerable.

Ceramic femoral head prosthesis.

Following the massive depuy recall of metal on metal hip implants ceramic hips are fast becoming the implant of choice. The stem portion of the femoral stem is inserted into the femur. Non traumatic fracture of a fourth generation ceramic femoral head. Acetabular head revision the sleeved ceramic femoral head can be used on either a new pristine stem or a previously implanted stem.

Imaging findings in plain films and ct studies include misalignment of the femoral head in the acetabular roof and loss of joint space suggesting wear or fracture of the prosthesis liner. The material of the femoral head metal ceramic was crossed with head size 32 32 36 36 mm yielding eight device groupings. The cloud sign amorphous densities in the peri prosthetic tissues and the bubble sign hyper dense rounded images with a higher contour. The stryker v40 femoral head is causing problems for thousands of hip implant.

Only uncemented devices were evaluated. All of these parts tend to be manufactured by the same company and implanted as a set. The zimmer m l taper hip prosthesis is available in 14 body sizes 4 0mm through 22 5mm. Stryker says this ceramic acetabular part demonstrated significantly lower wear versus conventional plastic on metal or metal on metal joint systems in the laboratory.

Stryker is a leader in the worldwide market of hip replacement products. As a result clinical findings become much more important. The primary outcome was all cause revision n 28 772 and the secondary outcome was dislocation within 1 year n 19 623. Following primary total hip arthroplasty with a ceramic on polyethylene articulation a 59 year old man sustains a rare fracture of the ceramic femoral head following minimal trauma after stepping down from a curb.

Ceramic components are said to be advanced when it comes to extending the lifetime of the implant. The femoral templates show the neck length and offset for each of the head neck combinations 3 5 to 10 5mm. During the procedure a low femoral neck cut resulted in a fracture of the greater trochanter which was subsequently fixed with two partially threaded screws. Femoral heads can be ceramic or metal.

If ceramic is used in the femoral head component of the prosthesis major prosthetic failure can occur with very subtle radiological abnormality or even normal radiographical appearance. A ceramic femoral head and a ceramic lining ceramic on ceramic in addition during june 2011 the fda approved a new ceramic on metal system. A combination of a ceramic acetabular liner with a 36 mm ceramic femoral head was chosen.