A review of 100 consecutive Richard's total knee replacements

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Reconstructive Surgery

Background:

• Severe knee pain, stiffness, and deformity significantly impact patient mobility and quality of life.
• Total knee replacement is a surgical option for end-stage knee joint disease.
• The Richard's Maximum Contact (RMC) prosthesis is a specific type of total knee replacement system.

Purpose of the Study:

• To evaluate the long-term clinical outcomes of Richard's Maximum Contact (RMC) total knee replacements.
• To assess the functional recovery and patient satisfaction following RMC knee arthroplasty.
• To determine the failure rates and complications associated with RMC knee replacements.

Main Methods:

• A retrospective review of 100 consecutive Richard's Maximum Contact (RMC) knee replacements performed between 1978 and 1982.
• Patient data collected included preoperative symptoms, surgical details, and postoperative follow-up assessments.
• Outcomes were assessed using a modified British Orthopaedic Association knee function assessment chart, with follow-up ranging from five to over eight years.

Main Results:

• Of the 87 knees available for review, 30% were graded as excellent, 25% as good, 22% as fair, and 10% as poor.
• Five implant failures occurred: four due to deep infection and one due to loosening.
• Six patients were chairbound at review, also classified as failures, indicating significant functional impairment.

Conclusions:

• Total knee replacement using the Richard's Maximum Contact (RMC) prosthesis demonstrated favorable outcomes in a majority of patients.
• The study suggests that RMC total knee replacement can achieve results comparable to hip arthroplasty in terms of predictability and success.
• Complications such as deep infection and loosening remain important considerations in total knee replacement surgery.