[Results with ceramic-on-ceramic sliding endoprosthesis completely or partially fixed without cement]

Area of Science:

• Orthopedic Surgery
• Biomaterials Science

Background:

• Ceramic materials are increasingly used in total hip arthroplasty (THA) due to their wear resistance.
• Assessing the long-term outcomes and potential complications of ceramic THA is crucial for patient care.

Purpose of the Study:

• To evaluate the clinical outcomes and complications of ceramic total hip arthroplasty.
• To investigate the performance of cementless femoral stem fixation and screw-type acetabular component fixation.
• To assess the suitability of ceramic-on-ceramic bearing surfaces in THA.

Main Methods:

• A retrospective follow-up study of 41 patients undergoing ceramic THA.
• Prostheses included Lindenhof (9) and Mittelmeier (32) types.
• Analysis of cementless (27) and reimplant (7) cases, with hip scores assessed using the Merle d'Aubigne scale.

Main Results:

• Femoral stem anchorage was identified as a significant challenge in cementless THA.
• Screw-type fixation of the acetabular component demonstrated reliable anchorage, including in reimplantation cases.
• Patient outcomes varied, with Merle d'Aubigne scores indicating a range of functional results.

Conclusions:

• Cementless femoral stem fixation in ceramic THA requires further optimization.
• Screw fixation for acetabular components offers a stable solution.
• The long-term safety and efficacy of ceramic-on-ceramic articulations in THA warrant further investigation.