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Bilateral Extensor Mechanism Allograft Reconstruction for Chronic Spontaneous Rupture

A Case Report and Review of the Literature

Lamberti, Alfredo MD1; Loconte, Francesco MD2; Spinarelli, Antonio MD3; Baldini, Andrea MD, PhD1

doi: 10.2106/JBJS.CC.18.00058
Case Reports

Case: A 51-year-old woman, affected by end-stage renal disease, presented with 16-month-old ruptures of the right patellar tendon and the left quadriceps tendon. Since she had been nonambulatory for more than a year, the authors decided to perform a bilateral one-staged reconstruction with an Achilles tendon allograft on the right side and a full extensor mechanism allograft on the left side, achieving excellent clinical and functional results at 57 months’ follow-up.

Conclusions: Bilateral spontaneous rupture of the extensor mechanism of the knee is a rare but dramatic occurrence. Allograft can be considered as a treatment option in case of chronic lesion or delayed reconstruction, with satisfactory midterm outcomes.

1IFCA, Istituto Fiorentino di Cura e Assistenza, Florence, Italy

2Ospedale di Ostuni, Ostuni, Italy

3Ospedale Policlinico Università di Bari, Piazza Giulio Cesare, Bari, Italy

E-mail address for A. Lamberti:

Investigation performed at IFCA, Istituto Fiorentino di Cura e Assistenza, Florence, Italy

Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (

Copyright © 2019 by The Journal of Bone and Joint Surgery, Incorporated
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