Biomechanical comparison of three internal fixation configurations for low transcondylar fractures of the distal humerus

doi:10.1016/j.injury.2022.10.025

IMECH-IR > 非线性力学国家重点实验室

	Biomechanical comparison of three internal fixation configurations for low transcondylar fractures of the distal humerus
	Zha, Yejun ; Hua, Kehan ; Xun Y(郇勇); Chen, Chen ; Sun, Weitong ; Ji, Shangwei ; Xiao, Dan ; Gong, Maoqi ; Jiang, Xieyuan
发表期刊	INJURY INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
	2023-02
卷号	54 期号:2 页码:362-369
ISSN	0020-1383
摘要	Background: We aimed to evaluate the biomechanical stiffness and strength of different internal fixa tion configurations and find suitable treatment strategies for low transcondylar fractures of the distal humerus.Methods and materials: Thirty 4th generation composite humeri were used to create low transcondy lar fracture models that were fixed by orthogonal and parallel double plates as well as posterolateral plate and medial screw (PPMS) configurations (n = 10 in each group) using an anatomical locking com pression plate screw system and fully threaded medial cortical screws. Posterior bending (maximum 50 N), axial loading (maximum 200 N) and internal rotation (maximum 10 Nmiddotm) were tested, in that order, for each specimen. Stiffness under different biomechanical settings among different configurations were compared. Another 18 sets of fracture models were created using these three configurations (n = 6 in each group) and the load to failure under axial loading among different configurations was compared.Results: Under posterior bending, the stiffness of parallel group was higher than orthogonal group (P < 0.001), and orthogonal group was higher than PPMS group (P < 0.001). Under axial loading, the stiff ness of parallel group was higher than orthogonal group (P = 0.001) and PPMS group (P < 0.001); however, the difference between orthogonal and PPMS group was not statistically significant (P > 0.05). Under inter nal rotation, the stiffness of parallel group was higher than orthogonal group (P = 0.044), and orthogonal group was higher than PPMS group (P = 0.029). In failure test under axial loading, the load to failure in the orthogonal group was lower than parallel group (P = 0.009) and PPMS group (P = 0.021), but the differ ence between parallel group and PPMS group was not statistically significant (P > 0.05). All specimens in orthogonal group demonstrated distal medial failure; most specimens had distal medial and trochlear failure in the parallel group; most specimens exhibited contact failure in the PPMS group.Conclusion: For treating low transcondylar fractures, the overall stiffness and strength of the parallel configuration were superior to those of the orthogonal and PPMS configurations. Nevertheless, the PPMS configuration can provide adequate stability and stiffness comparable to double plate configurations un der axial loading. Therefore, the PPMS construct may have certain clinical value.(c) 2022 Published by Elsevier Ltd.
关键词	Low transcondylar fracture Distal humerus Biomechanical study Internal fixation
DOI	10.1016/j.injury.2022.10.025
收录类别	SCI
语种	英语
WOS记录号	WOS:000935268000001
WOS研究方向	Critical Care Medicine ; Emergency Medicine ; Orthopedics ; Surgery
WOS类目	General & Internal Medicine ; Emergency Medicine ; Orthopedics ; Surgery
项目资助者	Beijing Jishuitan Hospital Elite Young Scholar Programme [XKGG202101] ; Beijing Natural Science Foundation [L192049] ; Beijing Municipal Health Commission [BMHC2019 9] ; Beijing Jishuitan Hospital Nova Program [XKXX201604] ; Beijing Jishuitan Hospital Youth Found [QN 202105]
论文分区	二类
力学所作者排名	3+
RpAuthor	Jiang, XY (corresponding author), Beijing Jishuitan Hosp, Dept Orthoped Trauma, 31 Xinjiekou East St, Beijing 100035, Peoples R China.
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91806
专题	非线性力学国家重点实验室
作者单位	1.Beijing Jishuitan Hosp, Dept Orthoped Trauma, 31 Xinjiekou East St, Beijing 100035, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zha, Yejun,Hua, Kehan,Xun Y,et al. Biomechanical comparison of three internal fixation configurations for low transcondylar fractures of the distal humerus[J]. INJURY INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED,2023,54,2,:362-369.
APA	Zha, Yejun.,Hua, Kehan.,郇勇.,Chen, Chen.,Sun, Weitong.,...&Jiang, Xieyuan.(2023).Biomechanical comparison of three internal fixation configurations for low transcondylar fractures of the distal humerus.INJURY INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED,54(2),362-369.
MLA	Zha, Yejun,et al."Biomechanical comparison of three internal fixation configurations for low transcondylar fractures of the distal humerus".INJURY INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED 54.2(2023):362-369.

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