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Nerve transfers are increasingly utilized for upper limb reconstruction in tetraplegia. We reviewed the literature for results achieved by nerve transfers for elbow extension, wrist control and finger and thumb flexion and extension. Muscle strength grading was the only outcome measure consistently reported. The results confirm that nerve transfers can effectively reanimate muscles in selected cases, with comparable strength with those achieved with tendon transfer for elbow extension but inferior strength for finger and thumb flexion. Transfer of supinator nerve branches to the posterior interosseous nerve appears to be reliable and offers increased span and better hand opening than is observed after tendon transfers. Only one publication demonstrated how reinnervation of muscles with nerve transfers translated into improved function, activity and participation for patients. More prospective studies, using standardized outcome measures, are needed to define the precise role of nerve transfers.