The biomechanical effect on the adjacent L4/L5 segment of S1 superior facet arthroplasty: a finite element analysis for the male spine
| Autor: | Sheng Yu, Qing-Jiang Pang, Cheng-Hao Wang, Chen Xianjun, Fang Yang, Jiangtao Liu, Zeming Chen, Shi Lin, Zewen Shi, Haihao Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
musculoskeletal diseases Facet (geometry) Finite Element Analysis 0206 medical engineering 02 engineering and technology Diseases of the musculoskeletal system Stress Arthroplasty Facet joint 03 medical and health sciences 0302 clinical medicine Lumbar Finite element Superior facet medicine Humans Orthopedics and Sports Medicine Postoperative Period Range of Motion Articular Intervertebral Disc Intervertebral foramen Range of motion Orthopedic surgery Lumbar Vertebrae business.industry Biomechanics Intervertebral disc Anatomy musculoskeletal system 020601 biomedical engineering Biomechanical Phenomena Apex (geometry) medicine.anatomical_structure RC925-935 Surgery business 030217 neurology & neurosurgery RD701-811 Research Article |
| Zdroj: | Journal of Orthopaedic Surgery and Research, Vol 16, Iss 1, Pp 1-9 (2021) Journal of Orthopaedic Surgery and Research |
| Popis: | Background The superior facet arthroplasty is important for intervertebral foramen microscopy. To our knowledge, there is no study about the postoperative biomechanics of adjacent L4/L5 segments after different methods of S1 superior facet arthroplasty. To evaluate the effect of S1 superior facet arthroplasty on lumbar range of motion and disc stress of adjacent segment (L4/L5) under the intervertebral foraminoplasty. Methods Eight finite element models (FEMs) of lumbosacral vertebrae (L4/S) had been established and validated. The S1 superior facet arthroplasty was simulated with different methods. Then, the models were imported into Nastran software after optimization; 500 N preload was imposed on the L4 superior endplate, and 10 N⋅m was given to simulate flexion, extension, lateral flexion and rotation. The range of motion (ROM) and intervertebral disc stress of the L4-L5 spine were recorded. Results The ROM and disc stress of L4/L5 increased with the increasing of the proportions of S1 superior facet arthroplasty. Compared with the normal model, the ROM of L4/L5 significantly increased in most directions of motion when S1 superior facet formed greater than 3/5 from the ventral to the dorsal or 2/5 from the apex to the base. The disc stress of L4/L5 significantly increased in most directions of motion when S1 superior facet formed greater than 3/5 from the ventral to the dorsal or 1/5 from the apex to the base. Conclusion In this study, the ROM and disc stress of L4/L5 were affected by the unilateral S1 superior facet arthroplasty. It is suggested that the forming range from the ventral to the dorsal should be less than 3/5 of the S1 upper facet joint. It is not recommended to form from apex to base. Level of evidence Level IV |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|