AI Article Synopsis
- The study aimed to compare the biomechanical impacts of two surgical systems, the anterior cervical transpedicular-screw system (ACTPS) and the anterior cervical screw plate system (ACLP), following a 2-level corpectomy in the cervical spine.
- A finite element model was created using software tools to evaluate the range of motion and stress distribution under different movements; the model was tested under specified loads to ensure accurate results.
- Results showed that the ACTPS provided better stress distribution and a reduced range of motion at the surgical site compared to ACLP, while adjacent segment motion remained similar across both systems; both were less mobile than the intact spine.
Article Abstract
Objective: To evaluate the biomechanical effects of the anterior cervical transpedicular-screw system (ACTPS), compared to the anterior cervical screw plate system (ACLP), in the subaxial cervical spine after 2-level corpectomy.
Methods: A verified intact finite element subaxial cervical (C3-C7) model was established and analyzed by Mimics 10.0, Rapidform XOR3, Hypermesh 10.0, CATIA5V19, ANSYS 14.0 softwares based on the CT data (C1-T1) was collected from a 28 years old male volunteer. The axial force of 75 N and moment couple of 1N·m was loaded on the upper surface of C3, which made the model movement in flexion extension, lateral bending, rotating direction, respectively. Then, recorded the range of motion, and compared the results with the in vitro biomechanical experimental data to verify the effectiveness of the model. The ACTPS model and the ACLP model were analyzed using the finite element method. The range of motion at the operation segments (C4-C7), the range of motion at the adjacent segment (C3-C4) and stress distribution under flexion, extension, lateral bending, and axial rotation were calculated, and compared the range of motion with intact model.
Results: There were 85,832 elements and 23,612 nodes in the intact model of subaxial cervical spine (C3-C7) in this experiment,and the range of motion of intact model validated with the reported cadaveric experimental data. In ACTPS group the stress was been well-distributed, but the stress concentrated on the interface between screw and the titanium plate in ACLP group. There were obvious differences of the maximum stress value between the two groups. The range of motion of fixed segments in ACTPS group was smaller than ACLP group, however adjacent segment range of motion showed no significant difference. Compared with the intact group, the range of motion in flexion extension, lateral flexion, rotation direction was decreased respectively about 25°, 20° and 8°, the range of motion at adjacent segment (C3-C4) was correspondingly compensated about 0.3°, 3° and 0.1°.
Conclusions: ACTPS is better than ACLP in terms of biomechanical properties. It offers rigid stability, and may be more suitable for reconstruction stability of 2-level and more than 2 levels corpectomy in the subaxial cervical spine. Meanwhile, the risk of fracture of ACTPS system is lower than that of the ACLP system.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
The incidence of and risk factors for axillary web syndrome with limited shoulder movement after surgery for breast cancer, and the effect of early physical therapy intervention.
Discov Oncol
January 2025
Department of Physical Medicine and Rehabilitation, Changhua Christian Hospital, 135 Nanxiao Street, Changhua, 50006, Taiwan.
Background: The aims of this cohort study were to identify (1) the incidence and risk factors for axillary web syndrome (AWS) with shoulder movement limitation within 4 weeks after axillary lymph node dissection (ALND) for Asian women with breast cancer (BC), and (2) whether early intervention with physical therapy (PT) could improve AWS, and how many PT sessions would be needed.
Methods: A cohort study of patients with BC receiving ALND was performed at Changhua Christian Hospital, Taiwan, between January 2019 and December 2020. Those patients who were diagnosed with AWS with shoulder movement limitation were referred to receive PT twice weekly at the Department of Physical Medicine and Rehabilitation.
Surgical excision of symptomatic lateral band snapping syndrome in small finger proximal interphalangeal joint.
BMJ Case Rep
January 2025
Orthopedic Surgery, OhioHealth, Columbus, Ohio, USA.
Lateral band snapping syndrome can be a debilitating condition involving the proximal interphalangeal (PIP) joint of the fingers. Although rare, it is thought to occur due to disruption of the finger extensor mechanism allowing inappropriate subluxation of the lateral bands over the PIP joint, leading to mechanical and painful symptoms.Here, we describe a woman in her early 40s with a painful, snapping PIP joint secondary to a work-related injury.
View Article and Find Full Text PDFAre pectoralis minor length and posterior shoulder tightness associated with patient-reported shoulder pain and disability?
J Hand Ther
January 2025
Department of Physical Therapist, Universidade Federal de São Carlos, São Carlos, SP, Brazil.
Background: Pectoralis minor (PM) shortening and posterior shoulder tightness (PST) are considered potential soft tissue alterations associated with rotator cuff related shoulder pain (RCRSP). Yet, their precise contribution to pain and disability remains unclear.
Purpose: To explore the association between both PM length and PST and self-reported shoulder pain and disability in individuals with and without RCRSP.
Lower limb joint reaction forces during sit-to-stand and stand-to-sit movements in stroke patients with spastic hemiplegia.
J Electromyogr Kinesiol
January 2025
Research Academy of Grand Health, Faculty of Sports Sciences, Ningbo University, Ningbo, China. Electronic address:
Objective: We investigated the characteristics of hip, knee, and ankle joint reaction forces (JRFs) in stroke patients with spastic hemiplegia during sit-to-stand (Si-St) and stand-to-sit (St-Si) movements and explored the relationship between JRFs and joint moments.
Methods: Thirteen stroke patients with spastic hemiplegia and thirteen age-matched healthy subjects were recruited in this study. Three-dimensional motion capture system and force plates were employed to collect kinematic data and ground reaction forces during Si-St and St-Si tasks.
Multi-Planar Cervical Motion Dataset: IMU Measurements and Goniometer.
Sci Data
January 2025
Department of Anatomy and Anthropology, Faculty of Medical & Health Sciences, Tel- Aviv University, Tel-Aviv, 699780, Israel.
This data descriptor presents a comprehensive and replicable dataset and method for calculating the cervical range of motion (CROM) utilizing quaternion-based orientation analysis from Delsys inertial measurement unit (IMU) sensors. This study was conducted with 14 participants and analyzed 504 cervical movements in the Sagittal, Frontal and Horizontal planes. Validated against a Universal Goniometer and tested for reliability and reproducibility.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!