Patellar Tendon Imbrication

Background: Patella alta is a common cause of patellar instability. Patellar tendon imbrication is a successful surgery addressing the deformity by shortening the patellar tendon without necessitating an osteotomy. Indications: Symptomatic patella alta causing patellar instability in both skeletally...

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Main Authors: Sercan Yalcin MD, Ronak M. Patel MD, Jack Andrish MD, Lutul D. Farrow MD
Format: Article
Language:English
Published: SAGE Publishing 2021-03-01
Series:Video Journal of Sports Medicine
Online Access:https://doi.org/10.1177/26350254211006699
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author Sercan Yalcin MD
Ronak M. Patel MD
Jack Andrish MD
Lutul D. Farrow MD
author_facet Sercan Yalcin MD
Ronak M. Patel MD
Jack Andrish MD
Lutul D. Farrow MD
author_sort Sercan Yalcin MD
collection DOAJ
description Background: Patella alta is a common cause of patellar instability. Patellar tendon imbrication is a successful surgery addressing the deformity by shortening the patellar tendon without necessitating an osteotomy. Indications: Symptomatic patella alta causing patellar instability in both skeletally immature and adult patients. Technique Description: The patellar tendon is exposed, and levels of imbrication as determined preoperatively by radiographic measurements are outlined on the tendon with a marking pen. A third line is then made proximal to the level of dissection that is half the distance of the lengthening. From the distal marking, a flap of tendon, the anterior half, is elevated by sharp dissection using a fresh No. 15 blade proximal to the predetermined level. Next, “redundancy-reducing” 2-0 vicryl sutures are placed and left untied by entering at the proximal marking, passing deep to the tendon, and emerging at the middle of the intact posterior section of tendon, followed by placement of 3 structural #2 Ethibond/Ti-Cron horizontal sutures into the patellar tendon that will create and maintain the imbrication. These sutures are then tied proximally while applying downward pressure to the patella to avoid tying under tension. Next, the “redundancy-reducing” sutures are tied thus imbricating the redundant posterior section of tendon. In a “pants over vest” fashion, the distal end of the anterior section of isolated tendon is repaired with ‘‘0’’ absorbable suture. The knee is then flexed beyond 90° to assess competence of the suture lines and to assess the need for quadriceps lengthening. Results: Radiographic shortening is maintained at a minimum of 2 years on 27 patients/32 knees. There were no complications directly related to the technique. Discussion/Conclusion: Patellar tendon imbrication is a safe and effective procedure to correct patella alta in the setting of lateral patellar instability. On average, the technique allowed 1 cm of patellar tendon shortening and maintained the correction at a minimum 2-year follow-up. In the skeletally immature patient, this technique allows correction of patella alta by avoidance of a tibial tuberosity osteotomy.
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spelling doaj.art-e4ff7abf1f6e48f8a11fa17513a981872022-12-21T18:51:54ZengSAGE PublishingVideo Journal of Sports Medicine2635-02542021-03-01110.1177/26350254211006699Patellar Tendon ImbricationSercan Yalcin MD0Ronak M. Patel MD1Jack Andrish MD2Lutul D. Farrow MD3Cleveland Clinic Foundation, Orthopaedic & Rheumatologic Institute, Cleveland, Ohio, USAHinsdale Orthopaedic Associates, Illinois Center for Orthopaedic Research and Education, Hinsdale, Illinois, USACleveland Clinic Foundation, Orthopaedic & Rheumatologic Institute, Cleveland, Ohio, USACleveland Clinic Foundation, Orthopaedic & Rheumatologic Institute, Cleveland, Ohio, USABackground: Patella alta is a common cause of patellar instability. Patellar tendon imbrication is a successful surgery addressing the deformity by shortening the patellar tendon without necessitating an osteotomy. Indications: Symptomatic patella alta causing patellar instability in both skeletally immature and adult patients. Technique Description: The patellar tendon is exposed, and levels of imbrication as determined preoperatively by radiographic measurements are outlined on the tendon with a marking pen. A third line is then made proximal to the level of dissection that is half the distance of the lengthening. From the distal marking, a flap of tendon, the anterior half, is elevated by sharp dissection using a fresh No. 15 blade proximal to the predetermined level. Next, “redundancy-reducing” 2-0 vicryl sutures are placed and left untied by entering at the proximal marking, passing deep to the tendon, and emerging at the middle of the intact posterior section of tendon, followed by placement of 3 structural #2 Ethibond/Ti-Cron horizontal sutures into the patellar tendon that will create and maintain the imbrication. These sutures are then tied proximally while applying downward pressure to the patella to avoid tying under tension. Next, the “redundancy-reducing” sutures are tied thus imbricating the redundant posterior section of tendon. In a “pants over vest” fashion, the distal end of the anterior section of isolated tendon is repaired with ‘‘0’’ absorbable suture. The knee is then flexed beyond 90° to assess competence of the suture lines and to assess the need for quadriceps lengthening. Results: Radiographic shortening is maintained at a minimum of 2 years on 27 patients/32 knees. There were no complications directly related to the technique. Discussion/Conclusion: Patellar tendon imbrication is a safe and effective procedure to correct patella alta in the setting of lateral patellar instability. On average, the technique allowed 1 cm of patellar tendon shortening and maintained the correction at a minimum 2-year follow-up. In the skeletally immature patient, this technique allows correction of patella alta by avoidance of a tibial tuberosity osteotomy.https://doi.org/10.1177/26350254211006699
spellingShingle Sercan Yalcin MD
Ronak M. Patel MD
Jack Andrish MD
Lutul D. Farrow MD
Patellar Tendon Imbrication
Video Journal of Sports Medicine
title Patellar Tendon Imbrication
title_full Patellar Tendon Imbrication
title_fullStr Patellar Tendon Imbrication
title_full_unstemmed Patellar Tendon Imbrication
title_short Patellar Tendon Imbrication
title_sort patellar tendon imbrication
url https://doi.org/10.1177/26350254211006699
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