Ceramic Femoral Head Wear

P biomet offers both the biolox delta and the biolox delta option ceramic femoral heads.

Ceramic femoral head wear.

A larger sized femoral head is less likely to dislocate but will normally cause more wear. 1 however there is a concern about ceramic head fracture therefore ceramic head with polyethylene liner has been introduced. The fracture rate of ceramic biolox femoral heads are 0 026 for first generation alumina 0 014 for second generation alumina and 0 004 for femoral heads manufactured after 1994. Oxinium technology combines the strength of metal with the smoothness of ceramic to offer the benefits of both without the risks.

The retrieval analysis of the fractured alumina matrix composite ceramic head revealed an extremely wear resistant surface. Our results are slightly lower than previously reported wear of ceramic and metal heads on hxlpe bearings which has been in the range of 0 012 0 067 mm y 22 29 32. When a larger ball head is used in a wear couple it allows to obtain an increased range of motion and stability for the patient or to reduce the risk of subluxation. The wear rate of ceramic on ceramic is virtually zero 0 07 μm year and even the few particles generated are completely inert.

With the very low rate of wear associated with ceramic implants particularly ceramic on ceramic the surgeon is free to use a larger head and thus reduce the risk of dislocation. Larger ceramic ball heads. Low wear with multiple liner options. He noted previously published studies have shown.

Analyzing the clinical experience of more than 20 years it can be concluded that all the improvements have produced reliable ceramic femoral heads. The biolox delta option ceramic head features a titanium neck sleeve designed to allow surgeons to utilize a ceramic head in either primary or. The body mounts. But with oxinium femoral heads those risks are history.

According to robert t. Ceramic hip replacement disadvantages. The biolox delta component is a traditional one piece ceramic head indicated for primary hip arthroplasty only. Trousdale md corrosion is the real issue when it comes to choosing between a ceramic and a cobalt chrome femoral head.

Ceramtec is in the early stages of providing adapters to fit over a used trunion thus providing a defect free taper for a new ceramic head and the ability to retain a well fixed femoral component. 1 2 6 ceramic on ceramic articulation has the lowest wear rate among various articulations. After 3 months and up to 5 years there was very little penetration of the femoral head into the liner in both groups. Ceramic materials have been used for tha with better clinical results compared with conventional metal on polyethylene articulation.

New generation of ceramic biolox delta can be used in order to produce large size ball heads d32 36 and 40 mm.