Lateral Retinacular Release in Total Knee Arthroplasty With Patellar Replacement

Not Applicable

Completed

• Conditions: Anterior Knee Pain Syndrome
• Interventions: Procedure: Lateral retinacular release

• Registration Number: NCT05778539
• Lead Sponsor: Hospital del Mar

Brief Summary

The aim of this study is to assess the effect of systematic lateral retinacular release on anterior knee pain, as well as its impact on the functional and radiological outcomes after total knee arthroplasty with patellar resurfacing.

Detailed Description

Anterior knee pain is an important cause of persistent pain after total knee arthroplasty. Lateral retinacular release has been proposed as a procedure to prevent anterior knee pain syndrome, based on the reduction of lateral tension and improving patellar tracking.

However, its effect on anterior knee pain after total knee arthroplasty is not clear when it is not strictly needed to correct maltracking.

The purpose of this trial is to evaluate the effect of systematic lateral retinaculare release on anterior knee pain, peformed during a total knee arthroplasty with patellar resurfacing.

Study Timeline

• Study Start: 2019-10-01
• Primary Completion: 2022-04-30
• Study Completion: 2022-04-30
• Study First Submitted: 2023-02-27
• Status Verified: 2023-03
• Study First Submitted QC: 2023-03-09
• Last Update Submitted: 2023-03-09
• Study First Posted: 2023-03-21
• Last Update Posted: 2023-03-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 220

Inclusion Criteria

• diagnosis of knee osteoarthritis

Exclusion Criteria

• prior major surgery on the same knee (high tibial or distal femoral osteotomy, patellar realignment)
• important preoperative malalignment (varus or valgus >15º or flexion deformity >15º)
• inability to sign informed consent

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Lateral retinacular release group	Lateral retinacular release	During the implantation of a total knee arthroplasty a lateral retinacular release is performed

Primary Outcome Measures

Name	Time	Method
Change from baseline in Anterior Knee Pain at one year after surgery	At the preoperative visit and at the 1-year follow up	Pressure pain threshold determined using pressure algometry
Change from baseline in Knee Pain measured by Visual Analogue Scale at one year after surgery	At the preoperative visit and at the 1-year follow up	The Visual Analogue Scale referred by the patients at rest, when walking and when going up and downstairs. Scored between 0 (no pain at all) and 10 (maximum pain the patient could imagine).

Secondary Outcome Measures

Name	Time	Method
Change from baseline in patellar pain and function at one year after surgery	At the preoperative visit and at the 1-year follow up	Patellofemoral score designed by Feller, distributed with a maximum of 15 points for the intensity of anterior knee pain, 5 points for quadriceps strength, 5 points for the ability to rise from a chair and 5 points for stair climbing ability
Change from baseline in knee fuction, measured by the Knee Society Score, at one year after surgery	At the preoperative visit and at the 1-year follow up	The Knee Society Score, being 0 the worst and 100 the best possible result

Trial Locations

Locations (1)

Parc de Salut Mar; 🇪🇸 Barcelona, Spain