Osteoarthritis, Patella Resurfacing Clinical Trial
Official title:
Comparison of Clinical Results of Patella Resurfacing Versus Patellar Retention Under Subvastus Approach in Total Knee Arthroplasty: A Randomized, Controlled, Double-Blind Trial
This study aims to compare the clinical results of patella resurfacing or not under
subvastus approach in total knee arthroplasty. Even though the excellent results of total
knee arthroplasty(TKA), there is persistent controversy over whether or not to replace the
patella. Anterior knee pain continued to be a unsolved problem of TKA patients. Some
surgeons always performed patella resurfacing during total knee arthroplasty but the others
didn't do that. It's up to surgeon's preference. There were several studies of patellar
resurfacing or not in TKA. But previous studies almost have been done under other approach,
not a subvastus approach.
This study prospectively randomized patients receiving bilateral TKA with patellar
resurfacing or not in each knee. Patients preference and clinical results was investigated
in both knee of same patients who received patellar resurfacing or not during minimum 2 year
follow up.
The primary objective of this work was to compare pain, stiffness and function between
groups at minimum 2 year postoperatively. Secondarily, we compared pain, patient preference
at minimum 2 year postoperatively. The investigators hypothesized that there would be no
difference between the two groups of subjects in the measured outcomes.
Patients receiving TKA were prospectively enrolled before surgery and randomized
intraoperatively to either receive patella replacement or not in both knee of same patients.
Subjects were assessed pre-operatively and at 6 months, 1, 2 years postoperatively for pain,
function, and stiffness using a disease-specific (Western Ontario and McMaster
Osteoarthritis Index [WOMAC]) . Other measurements like Knee Society score, Feller's score,
Patient satisfaction (VAS) also checked pre-operatively and at 6 months, 1, 2 years
postoperatively.
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Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment