• Xiangfeng Zhang, Feng Ruan, Yongping Wu, and Huang Lu.
• Department of Orthopedic Surgery.
• Medicine (Baltimore). 2020 Aug 28; 99 (35): e21742.

IntroductionAchilles tendon rupture is common, but bilateral ruptures are very rare. Treatment of chronic Achilles tendon rupture is very challenging due tendon retraction and atrophied. We report a case of bilateral asynchronous Achilles tendon rupture patient who was treated with modified minimally invasive whole flexor hallucis longus (FHL) tendon transfer to repair the defects.Patient ConcernsA 52-year-old male farmer presented to our hospital complaining of bilateral heel pain that had disrupted his walking for 6 months. The patient had been misdiagnosed and under-treated for 1 year. Physical examination showed that his plantar flexors were tender and weak, with marked hypotrophy of the calf muscles. Bilateral ankle radiographs of both X-ray and computed topography (CT) revealed no bone injure.DiagnosisMagnetic resonance imaging (MRI) indicated a bilateral Achilles tendon rupture. The diagnosis was further confirmed by postoperative histological examination, which revealed Achilles tendonitis accompanied by regional calcification and chondrometaplasia.InterventionsSurgical reconstruction of the ruptured Achilles tendons was done through a modified minimally invasive whole FHL tendon transfer followed by physiotherapy.OutcomesThe patient was immobilized in a cast for the next 6 weeks, gradual weight bearing gradually was then encouraged for another 6 weeks, and full weight-bearing started 3 months after surgery. By 6-month postoperation, the patient could walk and jog normally returned to his pre-injury working condition.ConclusionSurgical intervention is among the primary treatment of chronic Achilles tendon rupture. However, one of the challenges in its treatment is providing suitable graft for tendon reconstruction. Our case presents a successful reconstruction procedure using less-invasive whole FHL transfer technique. This surgical technique provides satisfactory clinical and functional outcome and can be considered for future therapy.

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