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[A method to avoid the fixator failure by using pedicle screw combined vertebroplasty for spine fractures]
Sheng Tao1, Ke-ya Mao, Bao-wei Liu
1Department of Orthopaedics, Beijing People's Liberation Army Hospital, Beijing 100853, China. taoshphy@126.com
Objective:
To study a new implant material (carbonated hydroxyapatite, CHA) united pedicle screw to cure spine fracture.
Methods:
Thirty-two cases of spine compressed fracture were used with pedicle screw fixator and vertebroplasty. Before operation, patients' vertebral body were compressed (46 + 21)% (20% approximately 70%) on average. In operation, broken vertebral body was reposition through pedicle screw technique, then used self-made syringe to inject CHA into anterior and central column of broken vertebral body through pedicle. And all of patients were not given any bone-graft.
Results:
In 6 - 26 months followed-up, no immunologic rejection was found about hydroxyapatite, and no any broken of the screws and shafts was found, no loosing and other complications either. All the patients could move in 3 - 5 days after operation. The height of the broken vertebral body were reduced 97% compared with pre-operation. And CHA in vertebral body was degraded gradually, and at the same time it was replace by new bone in vertebral body. After operation, VAS score was 61 +/- 32, and there was significant difference compared with pre-operation.
Conclusions:
The pedicle screw fixation united vertebroplasty is an efficient way to prevent the failure of the treatment of spine fracture.
