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Comparison of Two Methods of Patellar Resurfacing in Total Knee Arthroplasty

Osteoarthritis Clinical Trial

Official title:
Comparison of Two Methods of Patellar Resurfacing in Total Knee Arthroplasty.A Prospective, Randomized, Double-blind Study

Clinical Trial Summary

The aim of this prospective, randomized study was to compare the clinical and radiological results of "free-hand" technique and "resection guide" technique for preparing patella during total knee arthroplasty.

Clinical Trial Description

With improved surgical techniques and implant designs, patella resurfacing has been favored by increasing surgeons. When performing the resection, several principles such as restoring the original patellar thickness, avoiding over or under resection must be complied in order to achieve satisfactory outcomes.This study was conducted to compared the outcomes of two commonly adopted methods for performing patellar resection in total knee arthroplasty. One hundred patients with osteoarthritis were recruited in the clinical trial using Nexgen Legacy Posterior Stabilized-Flex prosthesis. Patients were randomized to receive "free-hand" technique and "resection guide" technique when performing patellar resection in total knee arthroplasty. Patients were evaluated preoperatively and at follow-up visits conducted at twelve months, at twenty-four months. Clinical outcome was assessed and compared with use of the visual analogue pain scale (VAS), range of motion, Knee Society Score (KSS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and the Short Form-36 (SF-36). Patellar alignment was assessed before surgery and at each follow-up by measuring the patellar tilt (PT) and lateral patellar displacement (PD). Prosthetic position and leg alignment were also compared between the two groups. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02268097
Study type Interventional
Source Peking University Third Hospital
Contact
Status Active, not recruiting
Phase N/A
Start date October 29, 2014
Completion date July 15, 2017
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