Use of Ti Ni sharp Memory Alloy Expansion Screw in Anterior Cervical Fusion
- VernacularTitle:镍钛记忆合金扩张钉在颈椎前路融合术中的应用
- Author:
Xianjun REN
- Publication Type:Journal Article
- Keywords:
Anterior cervical fusion Ti Ni sharp memory alloy expansion screw
- From:
Chinese Journal of Trauma
1991;0(01):-
- CountryChina
- Language:Chinese
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Abstract:
From sep. 1990. through Nov. 1990, we introdused a new technique in anterior cervical fusion. It reserved the bone dowel taken by trephine on the intervertebral levels, after decompression, rotated and inserted the dowel in initial hole, then placed a Ti Ni sharp memory alloy expansion screw into the dowel. Expansion force of the screw could exert continuous compression force on the bone graft, and made the graft tight contact with bilateral side of the vertebra. We treated 12 cases, 8 of them were cervical trauma (fractures, subluxations or a combination of these disorders), 4 were cervical spondylotie myelopathy. All cases obtained solid fusion and stability was achieved immediately after surgery. There was no graft dislodgement or deformity. None of the screws were loosened. We conclude that this method can prevent the graft displacement, promote the healing process, only need shortly immobility postopertively and allow early rehabilitation. It need not take iliae graft, and can aviods the donor site complicatons.
