Biomechanical evaluation of a novel atlas polyaxial transverse connecting screw system, an in vitro human cadaveric study

被引：0
|
作者：
Chen, Yun-Lin [1 ]
Lu, Wen-Jie [2 ]
Ma, Yu-Li [3 ]
Ma, Wei-Hu [1 ]
Jiang, Wei-Yu [1 ,4 ]
机构：
[1] Ningbo 6 Hosp, Dept Spine Surg, Ningbo, Peoples R China
[2] Zhejiang Chinese Med Univ, Sch Med, Hangzhou, Peoples R China
[3] Shanghai Sanyou Med Co Ltd, Tytus Labs, Shanghai, Peoples R China
[4] Ningbo 6 Hosp, Dept Spine Surg, 1059 Zhongshan East Rd, Ningbo, Peoples R China
来源：
MEDICINE | 2023年 / 102卷 / 47期
关键词：
Atlantoaxial fixation; atlas polyaxial transverse connecting screw; biomechanical study; in vitro; ATLANTOAXIAL FIXATION;
D O I：
10.1097/MD.0000000000036312
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
Purpose: To introduce a novel transverse connecting screw system, and to evaluate the biomechanical stability of the novel screw system using human cadaveric specimens.Methods: Six fresh-frozen cadaveric upper cervical spines were used in our study. Every specimen was tested under 5 conditions: intact group; unstable group; C1 to C2 screw rod system group; C1 to C2 + crosslink system group; atlas polyaxial transverse connecting screw (APTCS) system.Results: Compared with the intact state, C1 to C2 screw rod system, C1 to C2 + CL system and APTCS showed statistically decrease range of motion in all directions except for the unstable group under posterior extension direction (P < .05). APTCS group has the least range of motion in all directions (P < .001).Conclusion: The APTCS system was able to restore stability to the atlantoaxial joint. APTCS system has the advantages of easy installation, convenient bone grafting, and strong biomechanical strength.
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页数：4
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