• Medicine · Apr 2024

    Surgical treatment of patellar tendon rupture after total knee arthroplasty with a double-row repair method using the hamstring tendons: A novel technique with functional results.

    • Erkan Akgun, Abdulsamet Emet, Emre Tepedelenlioglu, Kemal Sibar, Halil Gok, and Ahmet Firat.
    • Department of Orthopedics and Traumatology, Etlik City Hospital, Ankara, Turkey.
    • Medicine (Baltimore). 2024 Apr 26; 103 (17): e37875e37875.

    BackgroundPatellar tendon rupture (PTR) is extremely rare but serious complication after primary or revision total knee arthroplasty. Due to the serious failure rates of end-to-end repair techniques, various augmentation techniques have been described. In this study, the results of patients with PTR after reconstruction using our own technique with semitendinosus (ST) and gracilis tendons taken from the affected side were evaluated retrospectively.MethodsA total of 14 patients, whose diagnosis was made based on physical examination and clinical findings, and supported radiologically (ultrasonography), were included in the study. In these patients, reconstruction was performed using double-row repair technique with the ST and gracilis tendons. Active-passive knee joint range of motion, active knee extension loss, and the Caton-Deschamps index at preoperative and final follow-up visits were compared. Tegner-Lysholm knee score and Kujala score were used to evaluate functional results.ResultsIn 14 patients (8 women and 6 men) with a mean age of 68.1 years, the median time between injury and surgery was 6.6 weeks. In all patients, the rupture was in the distal part of the patellar tendon. While the median preoperative Caton-Deschamps index was 1.8, the postoperative median value was found to be 1.25 after an average follow-up of 3.8 years (P = .014). The median preoperative knee extension loss decreased from 25° to 5° postoperatively. Tegner-Lysholm knee score and Kujala score of the patients at their last follow-up were significantly increased (P < .01).ConclusionFor PTR developing after total knee arthroplasty, the double-row reconstruction technique with ST and gracilis tendons is effective.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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