Barnett H G, Connolly E S
J Trauma. 1975 Jun;15(6):532-5.
The 14th myelographically demonstrated case of lumbosacral nerve root avulsion is presented with a summary of the previously reported cases. In most cases lumbosacral nerve root avulsion is associated with pelvic fractures and sacroiliac dislocation, which cause a stretching force to be applied to the nerves of the lumbar and sacral plexuses, and in turn to the nerve roots intradurally. This force causes nerve root avulsion in the intradural course of the nerve root. The myelographic defect is a pseudomeningocele or diverticulum-like outpouching created by the tearing of the arachnoid covering of the nerve roots. Myelography clearly indicates nerve root avulsion and surgical exploration is not indicated.
本文报告了第14例经脊髓造影证实的腰骶神经根撕脱病例，并总结了既往报道的病例。在大多数情况下，腰骶神经根撕脱与骨盆骨折和骶髂关节脱位有关，这些损伤会对腰骶丛神经施加牵张力，进而作用于硬膜内的神经根。这种力会导致神经根在硬膜内走行过程中发生撕脱。脊髓造影缺损是由神经根蛛网膜覆盖层撕裂形成的假性脑脊膜膨出或憩室样突出。脊髓造影能明确显示神经根撕脱，无需进行手术探查。
