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Mid-term results of rotating hinge knee prostheses
Ashok Rajgopal1, Attique Vasdev, Asit S Chidgupkar
1Medanta Bone and Joint Institute (MBJI), Medanta, Haryana, India.
Acta Orthopaedica Belgica
|April 25, 2012
Summary
The Nexgen rotating hinge prosthesis demonstrated satisfactory mid-term outcomes in complex knee revision surgeries and selected primary osteoarthritis cases. This advanced knee implant improved patient function and range of motion.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Complex primary and revision knee arthroplasty present significant surgical challenges.
- The Nexgen rotating hinge prosthesis is designed for complex cases requiring enhanced stability.
Purpose of the Study:
- To evaluate the mid-term clinical outcomes of the Nexgen rotating hinge prosthesis.
- To assess its efficacy in difficult primary and complex revision knee arthroplasty.
Main Methods:
- Retrospective analysis of 46 knees in 44 patients undergoing implantation by a single surgeon.
- Follow-up averaged 62 months, assessing Knee Society knee and function scores, and range of motion.
Main Results:
- Significant improvements observed in Knee Society knee scores (47 to 81, p<0.05) and function scores (17 to 67.5, p<0.001).
- Mean knee flexion improved from 65 to 96 degrees (p<0.05).
Conclusions:
- The Nexgen rotating hinge prosthesis yields satisfactory mid-term results in complex revision scenarios, including major bone loss and instability.
- It is also effective in selected cases of advanced primary osteoarthritis, enhancing patient function and mobility.
