Related Experiment Video
Updated: May 30, 2026
10:10
Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Primary total knee arthroplasty using rotating-hinge prosthesis in severely affected knees
Jae-Hyuk Yang1, Jung-Ro Yoon, Chi-Hun Oh
1Department of Orthopaedic Surgery, Seoul Veterans Hospital, 6-2 Dunchon Dong, Kangdong Ku, Seoul, Korea.
Summary
This study evaluated the Endo-Modell rotating-hinge total knee prosthesis for severe knee instability and bone loss. While improving function, it necessitates walking aids and carries a high risk of deep infection.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
Background:
- Rotating-hinge total knee prostheses are used for complex knee instability and bone loss.
- The Endo-Modell (Link®) prosthesis is one such implant.
Purpose of the Study:
- To evaluate the outcomes of primary total knee arthroplasty (TKA) using the Endo-Modell rotating-hinge prosthesis.
- To assess functional improvement and complications in patients with severe knee conditions.
Main Methods:
- Retrospective review of 50 primary TKAs (40 patients) using the Endo-Modell prosthesis.
- Mean follow-up of 15 years, assessing indications like severe osteoarthritis, rheumatoid arthritis, and post-traumatic arthritis.
- Knee Society Score (KSS) and radiographic analysis were performed preoperatively and at latest follow-up.
Main Results:
- Significant improvement in KSS (p < 0.001) from 38 to 73 points.
- Functional scores improved, and mean range of motion was 102°.
- 100% of patients required walking assistance, and a 14% deep infection rate was observed.
Conclusions:
- The Endo-Modell rotating-hinge prosthesis offers substantial functional improvement and pain reduction for complex knee conditions.
- Consideration must be given to the high incidence of required walking assistance and deep infections.