[Ceramic-ceramic articulation in uncemented total hip arthroplasty]

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Rheumatology

Context:

• Aseptic loosening of prosthesis components is a primary challenge in total hip arthroplasty (THA).
• Phagocyte reactions to wear particles during hip movement often cause aseptic loosening.
• Ceramic-ceramic hip prostheses offer a potential solution to mitigate these reactions.

Purpose:

• To evaluate the long-term clinical and radiological outcomes of Mittelmeier type ceramic-ceramic hip prostheses in patients with advanced coxarthrosis.
• To assess the incidence of aseptic loosening and patient satisfaction following this specific THA articulation.

Summary:

• This study analyzed 258 primary THA cases using Mittelmeier ceramic-ceramic prostheses in patients with coxarthrosis (mean age 45.6 years, mean follow-up 10.2 years).
• Clinical outcomes were graded using the Merle d'Aubigne and Postel system (Charnley modification), and radiological evaluations used De Lee and Charnley and Gruen and Moreland systems.
• Results showed 70.9% of patients achieved very good or good outcomes, with only 5.0% requiring revision surgery, indicating a low rate of aseptic loosening.

Impact:

• The Mittelmeier type ceramic-ceramic hip prosthesis demonstrates a very low percentage of aseptic loosening.
• This prosthesis type is associated with high patient satisfaction and favorable long-term results in treating coxarthrosis.
• Findings support ceramic-ceramic articulation as an effective strategy for durable THA.