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Direct muscle neurotization with long acellular nerve allograft: A case report

Sami H Tuffaha, Jesse D Meaike, Steven L Moran
Microsurgery 2019 July 22
31328294
Nerve repair and nerve transfer are the optimal approaches to restore function to denervated muscle. When the distal-most portion of the nerve entering the muscle is compromised, these are not possible and direct muscle neurotization (DMN) is considered. We describe the first reported case of DMN with acellular nerve allograft. The patient is a 25 year old male who sustained a blast injury to the patient's proximal leg with segmental injury to the deep peroneal nerve resulting in complete foot drop with 0/5 dorsiflexion and toe extension. Given complete obliteration of the distal nerve, we performed direct neurotization of the tibialis anterior muscle with a 7 cm acellular nerve allograft coapted to the proximal stump of the deep peroneal nerve. At 3 years after surgery, the patient regained 5/5 strength with dorsiflexion and toe extension and normal gait. This case supports the use of acellular nerve allografts to restore function to denervated muscle when the distal nerve stump is not available for nerve repair or transfer and there is a desire to avoid the morbidity of autologous nerve graft harvest.

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