Total knee replacement with the Kodama-Yamamoto knee prosthesis

Area of Science:

• Orthopedic Surgery
• Biomaterials Science

Background:

• The Kodama-Yamamoto knee prosthesis has been utilized since 1970.
• A revised Mark-II prosthesis was used in 127 of 170 total knee arthroplasties.
• Long-term follow-up data is crucial for evaluating orthopedic implant efficacy.

Purpose of the Study:

• To evaluate the interim results of the Kodama-Yamamoto Mark-II prosthesis.
• To assess the impact of cementless total knee replacement on patient outcomes.
• To identify any complications associated with the prosthesis and surgical technique.

Main Methods:

• Retrospective analysis of 170 knee arthroplasties using the Kodama-Yamamoto prosthesis.
• Detailed follow-up of 91 cases with the Mark-II prosthesis for over one year.
• Comparison of pre-operative and post-operative total knee scores.

Main Results:

• Significant improvement in average total knee score from 38 pre-operatively to 74 post-operatively (one-year follow-up).
• One case of early prosthesis loosening due to knee infection.
• No other instances of loosening or radiolucent lines observed in the remaining cases.

Conclusions:

• The Kodama-Yamamoto Mark-II prosthesis demonstrates promising interim results with improved functional scores.
• Cementless total knee replacement may lead to enhanced outcomes and reduced complications compared to cemented procedures.
• Further investigation into cementless techniques is warranted for optimizing total knee arthroplasty outcomes.