title: Unaffected contralateral S1 transfer for the treatment of lumbosacral plexus avulsion.
abstract: BACKGROUND
  This study describes a new surgical strategy for lumbosacral plexus avulsion by transfer of the unaffected contralateral S1 nerve root.
  
  
  METHODS
  A surgical reconstruction of the sacral nerve was performed on a 10-year-old boy with left lumbosacral plexus avulsion. The unaffected S1 nerve root (right side) is severed extradurally for transfer. A 25-cm long nerve graft from the common peroneal nerve of the affected side was used as donor nerve. One end of the nerve graft was anastomosed to the proximal stump of the right-sided extradural S1 nerve. The distal end of the nerve graft was divided into two fascicles and anastomosed to the left-sided inferior gluteal nerve and the branch of the sciatic nerve innervating the left-sided hamstrings.
  
  
  RESULTS
  According to motor score of the British Medical Research Council (MRC) system, the strength of glutei and hamstrings improved to the level of M3 1.5 years after surgery.
  
  
  CONCLUSIONS
  The extradural S1 nerve root in the unaffected side can be considered as a suitable donor nerve for transfer in patients with root avulsion of the lumbar or sacral nerve plexus.
authors: Department of Orthopedic Trauma Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
authors: Yongchuan
authors: Y
authors: Li
authors: Department of Orthopedic Trauma Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
authors: Haodong
authors: H
authors: Lin
authors: Department of Orthopedic Trauma Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
authors: Liangyu
authors: L
authors: Zhao
authors: Department of Orthopedic Trauma Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China. Electronic address: aiminchen@aliyun.com.
authors: Aimin
authors: A
authors: Chen
mesh_terms: D002081:Buttocks / Q000294:innervation* / Q000601:surgery; D002648:Child; D005500:Follow-Up Studies; D006801:Humans; D008160:Lumbosacral Plexus / Q000293:injuries / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D016067:Nerve Transfer / Q000379:methods; D059348:Peripheral Nerve Injuries / Q000601:surgery*; D020127:Recovery of Function; D012584:Sciatic Nerve / Q000637:transplantation*; D016896:Treatment Outcome
keywords: Nerve transfer; Reconstruction; Sacral nerve plexus