A Biomechanical Evaluation of Cervical Spinal Stabilization Methods in a Bovine Model

The treatment of metastatic spinal cord compression is complex. The three treatment modalities that are currently applied (in a histologically non-specific manner) are surgery, radiotherapy and the administration of steroids. The development of new spinal instrumentations and surgical approaches considerably changed the extent of therapeutic options in this field. These new surgical techniques have made it possible to resect these tumours totally, with subsequent vertebral reconstruction and spinal stabilization. In this respect, it is important to clearly identify those patients who can benefit from such an extensive surgery. We present our management algorithm to help select patients for surgery and at the same time identifying those for whom primary non-surgical therapy would be indicated. The retrospective review of surgically treated patients in our department in the last four years reveals a meagre application of conventional guidelines for the selection of the appropriate operative approach in the surgical management of these patients. The reasons for this discrepancy are discussed.

Download Full-text

Cross Linking Corneal Biomechanical Evaluation of CATS Tonometer Prism

Case Medical Research ◽

10.31525/ct1-nct04180111 ◽

2019 ◽

Author(s):

Keyword(s):

Cross Linking ◽

Biomechanical Evaluation

Download Full-text

Topological design and biomechanical evaluation for 3D printed multi-segment artificial vertebral implants

Materials Science and Engineering C ◽

10.1016/j.msec.2021.112250 ◽

2021 ◽

pp. 112250

Author(s):

Jianfeng Kang ◽

Enchun Dong ◽

Xiangdong Li ◽

Zheng Guo ◽

Lei Shi ◽

...

Keyword(s):

Topological Design ◽

3D Printed ◽

Biomechanical Evaluation

Download Full-text

Biomechanical Evaluation of a New Fixation Method for Stabilization of Sagittal Split Ramus Osteotomy After Mandibular Advancement

Craniomaxillofacial Trauma & Reconstruction Open ◽

10.1177/24727512211019230 ◽

2021 ◽

Vol 6 ◽

pp. 247275122110192

Author(s):

Karel Kuik ◽

Jean Pierre T. F. Ho ◽

Cornelis Klop ◽

Maurits H. T. de Ruiter ◽

Cornelis J. Kleverlaan ◽

...

Keyword(s):

Hybrid Method ◽

In Vitro Study ◽

Mandibular Advancement ◽

Fixation Method ◽

Common Procedure ◽

Sagittal Split Ramus Osteotomy ◽

Fixation Methods ◽

Biomechanical Evaluation ◽

Monocortical Screws

Study Design: Biomechanical in vitro study. Mandibular advancement after sagittal split ramus osteotomy (SSRO) is a common procedure in orthognathic surgery. Several fixation methods are used for stabilization of SSRO. Objective: The aim of this study was to compare a new fixation method (gridplate) with more contemporary applied methods of fixation. Material and Methods: In this study, 50 polyurethane hemimandibles with a prefabricated SSRO were used as specimens. All hemimandibles were advanced by 8 mm and divided into 5 groups with different fixation methods: (A) one 4-hole miniplate with 4 monocortical screws; (B) two 4-hole miniplates with 8 monocortical screws; (C) one 4-hole miniplate with 4 monocortical screws and 1 bicortical screw in the retromolar area (hybrid method); (D) 3 bicortical screws in an inverted-L pattern; and (E) one 8-hole gridplate with 8 monocortical screws. Loads in newtons were recorded at displacements of the mandibular incisive edge at 1 mm, 3 mm and 5 mm. Results: Fixation with 3 bicortical screws and the gridplate presented the most stability, followed by two 4-hole miniplates. Fixation with the hybrid method or the single miniplate showed the least stability. Conclusion: According to the results of this study, the 8-hole gridplate design appears a sufficient fixation method regarding stabilization of SSRO with larger mandibular advancement.

Download Full-text