Abstract | OBJECTIVE: METHODS: The experimental thoracic-lumbar fracture units were made with adult human fresh-frozen vertebral specimens. A total of 30 fresh-frozen vertebral units were randomly assigned to 3 experimental groups: control group, percutaneous kyphoplasty group (PKP group), and percutaneous Ni-Ti shape memory alloys implant group ( Ni-Ti implant group). Vertebral height and ultimate compression load of the vertebral body before and after procedures were measured to determine the restoration of vertebral heights and compressive strength, respectively. RESULTS: The Ni-Ti implant group achieved a vertebrae endplate reduction effect comparable to the PKP group. The vertebral height of the PKP group was restored from 2.01±0.21 cm to 2.27±0.18 cm after procedure, whereas that of the Ni-Ti implant group was restored from 2.00±0.18 cm to 2.31±0.17 cm. The ultimate loads of the vertebrae body of the PKP and the Ni-Ti implant groups were 2880.75±126.17 N and 2888.00±144.69 N, respectively, both of which were statistically significantly higher than that of the control group (2017.17±163.71 N). There was no significant difference in ultimate compression load of vertebrae body between the Ni-Ti implant and PKP groups. CONCLUSIONS: The implantation of Ni-Ti shape memory alloys of vertebral body induced effective endplate reduction, restored vertebral height, and provided immediate biomechanical spinal stability.
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Authors | Bo Chen, Yue-Huang Zheng, Tao Zheng, Chang-Hui Sun, Jiong Lu, Peng Cao, Jian-Hua Zhou |
Journal | International journal of clinical and experimental medicine
(Int J Clin Exp Med)
Vol. 8
Issue 9
Pg. 16899-906
( 2015)
ISSN: 1940-5901 [Print] United States |
PMID | 26629241
(Publication Type: Journal Article)
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