[The GSB knee joint: reoperation and infections]

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Materials science

Background:

• The GSB-III knee prosthesis is a semi-constrained implant.
• Its design aims for physiological kinematics, mimicking natural knee joint movement in the sagittal plane.

Purpose of the Study:

• To evaluate the long-term efficacy and outcomes of the GSB-III knee prosthesis.
• To assess its performance in terms of range of motion, aseptic loosening, and survival rates.

Main Methods:

• Analysis of survival curves for 638 GSB-III prosthesis cases.
• Evaluation of postoperative mobility and aseptic loosening rates at 10 years.
• Identification of factors contributing to revision surgery, such as patellar problems and infections.

Main Results:

• The GSB-III prosthesis demonstrated a cumulative success rate exceeding 90% after 10 years.
• High average range of postoperative mobility was observed.
• Low aseptic loosening rates were recorded, indicating long-term implant stability.

Conclusions:

• The GSB-III prosthesis shows excellent long-term results, including high survival rates and good functional outcomes.
• Patellar problems are a significant factor in revision surgeries, representing a persistent challenge in knee arthroplasty.
• Infections and specific patient comorbidities are identified as risk factors for revision.
• A standardized global evaluation system is needed for comparing different knee prostheses.