• Alexander von Glinski, Emre Yilmaz, Valentin Rausch, Matthias Königshausen, Thomas Armin Schildhauer, Dominik Seybold, and Jan Geßmann.
• Department of General and Trauma Surgery, BG University Hospital, Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany. AlexvonGlinski@gmail.com.
• Eur J Orthop Surg Tr. 2019 Aug 1; 29 (6): 1347-1353.

BackgroundAcute bilateral patellar tendon rupture is a rare occurrence, especially in young patients in the absence of comorbidities. We describe a case of bilateral patellar tendon re-rupture in a young patient without predisposing factors. Further, we explain a technique for autograft augmented patellar tendon repair with bidirectional fixation using an ipsilateral semitendinosus graft in transosseous patellar and tibia bone tunnels.Case PresentationWe present the case of a 40-year-old healthy worker with bilateral acute on chronic patellar tendon rupture maintained following initial trauma and Krackow repair 2 years ago. He underwent bilateral reconstruction using semitendinosus autograft. At 1 year postoperatively, he has maintained the full range of motion and strength without re-rupture.ConclusionThis is the first case describing a new fixation technique after bilateral patellar tendon re-rupture. The use of semitendinosus autograft for reconstruction of the patellar tendon after re-rupture is a viable and effective option.

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