PMID- 31455504 OWN - NLM STAT- MEDLINE DCOM- 20200721 LR - 20200721 IS - 1879-0267 (Electronic) IS - 0020-1383 (Linking) VI - 50 IP - 11 DP - 2019 Nov TI - Medial anatomical buttress plate in treating displaced femoral neck fracture a finite element analysis. PG - 1895-1900 LID - S0020-1383(19)30497-8 [pii] LID - 10.1016/j.injury.2019.08.024 [doi] AB - BACKGROUND: Displaced femoral neck fractures in young adults are most likely to result from high energy trauma that causes a vertically-oriented shearing injury through the femoral neck. The optimal strategy for treatment of displaced femoral neck fractures remains an unsolved challenge in orthopedic surgery. METHODS: our group has previously designed a medial anatomical buttress plate (MABP) based on the analysis of the computed tomography (CT) data of anatomical structures derived from a large sample population. In this study, finite element analyses (FEA) were carried out to compare the outcomes of the combination of our MABP with cannulated screws to those of the combination of tubular plate with cannulated screws, and to those of using cannulated screws alone. RESULTS: MABP resulted in a more stable fixation as compared to the other two approaches, with respect to the femur and the stress distributions, stress peaks, and Z axis displacements. CONCLUSIONS: The FEA encouraged us that addition of a medial buttress plate not only achieved superior medial buttress stability but also achieves superior performance because it perfectly fits with the existing anatomic structure of medial femoral neck. The results from our study may provide references for clinical decision making in dealing with such patients. CI - Copyright (c) 2019 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Li, Jia AU - Li J AD - Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China. Electronic address: leejia301@163.com. FAU - Yin, Pengbin AU - Yin P AD - Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China. Electronic address: yinpengbin@gmail.com. FAU - Zhang, Licheng AU - Zhang L AD - Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China. Electronic address: zhanglcheng218@126.com. FAU - Chen, Hua AU - Chen H AD - Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China. Electronic address: chenhua0270@126.com. FAU - Tang, Peifu AU - Tang P AD - Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China. Electronic address: pftang301@163.com. LA - eng PT - Journal Article DEP - 20190819 PL - Netherlands TA - Injury JT - Injury JID - 0226040 SB - IM MH - Artificial Organs MH - Biomechanical Phenomena MH - *Bone Plates MH - Bone and Bones MH - Femoral Neck Fractures/*surgery MH - *Finite Element Analysis MH - Fracture Fixation, Internal/instrumentation/*methods MH - Humans MH - Stress, Mechanical MH - Tensile Strength OTO - NOTNLM OT - Displaced femoral neck fractures OT - Finite element analysis (FEA) OT - Medial anatomical buttress plate (MABP) OT - Tubular plate (TP) EDAT- 2019/08/29 06:00 MHDA- 2020/07/22 06:00 CRDT- 2019/08/29 06:00 PHST- 2019/03/19 00:00 [received] PHST- 2019/08/17 00:00 [accepted] PHST- 2019/08/29 06:00 [pubmed] PHST- 2020/07/22 06:00 [medline] PHST- 2019/08/29 06:00 [entrez] AID - S0020-1383(19)30497-8 [pii] AID - 10.1016/j.injury.2019.08.024 [doi] PST - ppublish SO - Injury. 2019 Nov;50(11):1895-1900. doi: 10.1016/j.injury.2019.08.024. Epub 2019 Aug 19.