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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Lateral retinacular release group | Experimental | During the implantation of a total knee arthroplasty a lateral retinacular release is performed |
|
| Non-release group | No Intervention | No aditional gesture in the lateral retinaculum is performed during the implantation of a total knee arthroplasty |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Lateral retinacular release | Procedure | During the implantation of a total knee arthroplasty a lateral retinacular release is performed in the intervention group |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in Anterior Knee Pain at one year after surgery | Pressure pain threshold determined using pressure algometry | At the preoperative visit and at the 1-year follow up |
| Change from baseline in Knee Pain measured by Visual Analogue Scale at one year after surgery | 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). | At the preoperative visit and at the 1-year follow up |
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in patellar pain and function at one year after surgery | 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 | At the preoperative visit and at the 1-year follow up |
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in Patelar Height at one year after surgery | Measured in the lateral radiographic view using the Caton-Deschamps index | At the preoperative visit and at the 1-year follow up |
| Change from baseline in Patellar Tilt at one year after surgery |
Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Parc de Salut Mar | Barcelona | 08003 | Spain |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Sep 1, 2019 | Feb 14, 2023 | Prot_SAP_000.pdf |
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| ID | Term |
|---|---|
| D046788 | Patellofemoral Pain Syndrome |
| ID | Term |
|---|---|
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
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| Change from baseline in knee fuction, measured by the Knee Society Score, at one year after surgery | The Knee Society Score, being 0 the worst and 100 the best possible result | At the preoperative visit and at the 1-year follow up |
Measured in the axial radiographic view, as the angle subtended by the anterior intercondylar line and the equatorial line of the patella preoperatively or a line drawn through the prosthesis-bone interface postoperatively |
| At the preoperative visit and at the 1-year follow up |