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Hinge vs CCK Implants
Sponsor: Medstar Health Research Institute
Summary
The primary purpose of this study is to compare reoperation rates for rotating hinge knee implants versus condylar constrained knee implants when used in revision total knee arthroplasty. The secondary purposes are to compare patient satisfaction, loosening rates and clinical outcomes for RHK implants compared to CCK implants in rTKA. Additionally, knee range of motion and stability will be assessed and compared at all follow-up time points. We hypothesize that RHK implants provide patients undergoing rTKA with similar reoperation rates to those of patients who receive a CCK implant. The investigators hypothesize that patients who receive an RHK implant will have similar loosening rates and clinical outcomes compared to patients who receive a CCK implant. Lastly, knee stability and patient satisfaction may improve with the use of a rotating hinge device.
Official title: A Randomized Controlled Trial Comparing Reoperation Rates and Clinical Outcomes of Rotating Hinge Versus Condylar Constrained Knee Implants in Revision Total Knee Arthroplasty
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
186
Start Date
2026-02-01
Completion Date
2037-01
Last Updated
2026-09-14
Healthy Volunteers
No
Conditions
Interventions
Condylar Constrained knee system. ( NexGen Legacy Condylar Constrained Knee by Zimmer Biomet)
Patients in this group will receive a condylar constrained knee implant at the time of surgery and will have their outcomes with this implant assessed over 10 years.
Rotating Hinge Knee ( NexGen Rotating Hinge Knee by Zimmer Biomet)
Patients in this group will receive a rotating hinge knee implant and will be followed for the next 10 years to asses outcomes.
Locations (2)
Medstar Georgetown University Hospital
Washington D.C., District of Columbia, United States
Medstar Montgomery Medical Center
Olney, Maryland, United States