Hess, Silvan; Bürki, Alexander; Moor, Beat K.; Bolliger, Lilianna; Zysset, Philippe; Zumstein, Matthias; Zumstein, Matthias A. (2021). A biomechanical study comparing the mean load to failure of two different osteosynthesis techniques for step-cut olecranon osteotomy. JSES reviews, reports and techniques, 1(4), pp. 414-420. Elsevier 10.1016/j.xrrt.2021.07.004
|
Text
Hess_2021_JSESRevRepTech.pdf - Published Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (1MB) | Preview |
Background
Olecranon osteotomies are frequently used to expose distal humeral intraarticular fractures. The step-cut olecranon osteotomy (SCOOT) is an augmented version of the oblique olecranon osteotomy, which has recently been evaluated biomechanically with tension band wiring (TBW) fixation. However, complications with TBW are common. In this study, we, therefore, compared the mean load to failure of TBW with compression screws for SCOOT fixation. We hypothesized a higher load to failure for the compression screw group.
Methods
We performed a SCOOT on 36 Sawbones. Eighteen were fixed with TBW, and another 18 with two compression screws. The humeroulnar joint was simulated using an established test setup, which allows the application of triceps traction force through a tendon model to the ulna, while the humeroulnar joint is in a fixed position. Eight models of each fixation group were tested at 20°, and eight at 70° of flexion by isometrical loading until failure, which was defined as either a complete fracture or gap formation of more than 2 mm at the osteotomy site.
Results
At 20° of flexion, mean load to failure was similar between the TBW group (1360 ± 238 N) and the compression screw group (1401 ± 261 N) (P = .88). Also, at 70° of flexion, the mean load to failure was similar between the TBW group (1398 ± 215 N) and the compression screw group (1614 ± 427 N) (P = .28).
Conclusions
SCOOTs fixed with TBW and compression screws showed similar loads to failure. A SCOOT fixed with compression screws might be a valuable alternative for surgeons when treating intraarticular distal humeral fractures. However, future in vivo studies are necessary to confirm our results in a clinical setting.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Musculoskeletal Biomechanics 04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery |
UniBE Contributor: |
Hess, Silvan, Moor, Beat Kaspar, Bolliger-Kägi, Lilianna, Zysset, Philippe, Zumstein, Matthias |
Subjects: |
500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health 600 Technology > 620 Engineering |
ISSN: |
2666-6391 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Philippe Zysset |
Date Deposited: |
16 Dec 2021 08:59 |
Last Modified: |
05 Dec 2022 15:56 |
Publisher DOI: |
10.1016/j.xrrt.2021.07.004 |
BORIS DOI: |
10.48350/162251 |
URI: |
https://boris.unibe.ch/id/eprint/162251 |
Actions (login required)
 |
Edit item |