Biomechanical effect of a lateral hinge fracture for a medial opening wedge high tibial osteotomy: finite element study

Journal of Orthopaedic Surgery and Research

卷:15

Kyoung-Tak Kang¹  Jin-Ah Lee¹  Yong-Gon Koh²  Sae Kwang Kwon²  Jae Jung Lee² 

[1] Department of Mechanical Engineering, Yonsei University;

[2] Joint Reconstruction Center, Department of Orthopaedic Surgery, Yonsei Sarang Hospital;

关键词: High tibial osteotomy;    Lateral hinge fracture;    Finite element analysis;   

DOI  :  10.1186/s13018-020-01597-7

来源: DOAJ

【 摘 要 】

Abstract Background This study aimed to investigate the biomechanical effect on the Takeuchi classification of lateral hinge fracture (LHF) after an opening wedge high tibial osteotomy (HTO). Methods We performed an FE simulation for type I, type II, and type III in accordance with the Takeuchi classification. The stresses on the bone and plate, wedge micromotion, and forces on ligaments were evaluated to investigate stress-shielding effect, plate stability, and biomechanical change, respectively, in three different types of LHF HTO and with the HTO without LHF model (non-LHF) models. Results The greatest stress-shielding effect and wedge micromotion were observed in type II LHF (distal portion fracture). The type II and type III (lateral plateau fracture) models exhibited a reduction in ACL force and an increase in PCL force compared with the HTO without LHF model. However, the type I (osteotomy line fracture) and HTO without LHF models did not exhibit a significant biomechanical effect. This study demonstrates that Takeuchi type II and type III LHF models provide unstable structures compared with the type I and HTO without LHF models. Conclusions HTO should be performed while considering a medial opening wedge HTO to avoid a type II and type III LHF as a potential complication.

【 授权许可】

Unknown