This study reported the clinical results of 10 patients in which the residual intraspinal ventral rootlet stumps were used as donor nerves to reconstruct disrupted nerves in the brachial plexus.Thirteen patients with brachial plexus injury diagnosed as at least one of the C5 to T1 nerve rootlets remained in contact with spinal cord by computed tomography myelography pre-operatively were included.However,we could not expose these residual nerve roots by a supraclavicular exploring operation.The residual intraspinal nerve rootlets were exposed after hemilaminectomy or hemilaminotomy,and were used as donor nerves,which were bridged with sural nerve grafts to the recipient nerves.Ten patients were followed up more than 3 years and 2 patients were lost to follow-up.After 45-68 months,useful function with muscle power > Medical Research Council Grade (MRC) 3 occurred in all target muscles.There were no sensory returns of recipient nerves.When ruptured spinal nerve roots were found at the level of intervertebral foramen in patients with brachial plexus injury,the proximal intraspinal ventral rootlet stumps exposed by hemilaminectomy or hemilaminotomy may be promising donor nerves for brachial plexus reconstruction.