[Experience in 98 unicondylar knee prostheses Marmor].

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Reconstructive Surgery

Context:

• Marmor unicompartmental knee prostheses were implanted between 1974 and 1992.
• The study included 98 prostheses for gonarthrosis, with specific attention to genu valgum and genu varum deformities.
• Prostheses were placed in both lateral and medial femoro-tibial compartments.

Purpose:

• To evaluate the clinical outcomes and complications of Marmor unicompartmental knee prostheses.
• To assess the long-term efficacy of this specific implant design in treating knee osteoarthritis.

Summary:

• A total of 98 Marmor unicompartmental prostheses were analyzed with a minimum 12-month follow-up.
• International Knee Society Score revealed 72% good and excellent results.
• Reoperations occurred in 11 patients, primarily due to tibial loosening, highlighting a key area for improvement.

Impact:

• The findings confirm the generally good clinical performance of the Marmor unicompartmental prosthesis.
• Complications are predominantly associated with the tibial component, suggesting areas for future implant design refinement.
• This study provides valuable data for orthopedic surgeons considering unicompartmental knee arthroplasty options.