当前位置： SCI文献检索 > EUROPEAN JOURNAL OF MEDICAL RESEARCH期刊下所有文献 > Biomechanical comparison of bi- and tricortical k-wire fixation in tension band wiring osteosynthesis.

Biomechanical comparison of bi- and tricortical k-wire fixation in tension band wiring osteosynthesis.

Abstract：

BACKGROUND:Patients with a simple transversal fracture of the olecranon are often treated with a tension band wiring (TBW), because it is known as a biomechanically appropriate and cost-effective procedure. Nevertheless, the technique is in detail more challenging than thought, resulting in a considerable high rate of implant-related complications like k-wire loosening and soft tissue irritation. In the literature, a distinction is generally only made between transcortical (bi-) and intramedullary (mono-) fixation of the wires. There is the additional possibility to fix the proximal bent end of k-wire in the cortex of the bone and thus create a tricortical fixation. The present study investigates the effectiveness of bi- and tricortical k-wire fixation in a biomechanical approach. METHODS:TBW of the olecranon was performed at 10 cadaver ulnas from six donors in a usual manner and divided into two groups: In group 1, the k-wire was inserted by bicortical fixation (BC), and in group 2, a tricortical fixation (TC) was chosen. Failure behavior and maximum pullout strength were assessed and evaluated by using a Zwick machine. The statistical evaluation was descriptive and with a paired t test for the evaluation of significances between the two techniques. RESULTS:The average age of the used donors was 81.5 ± 11.5 (62-92) years. Three donors were female, and three were male. Ten k-wires were examined in BC group and 10 in the TC group. The mean bone density of the used proximal ulnas was on average 579 ± 186 (336-899) HU. The maximum pullout strength was 263 ± 106 (125-429) N in the BC group and increased significantly in the TC group to 325 ± 102 (144-466) N [p = .005]. CONCLUSION:This study confirms for the first time biomechanical superiority of tricortical k-wire fixation in the olecranon when using a TBW and may justify the clinical use of this method.

journal_name

Eur J Med Res

journal_title

European journal of medical research

authors

Nowotny J,Bischoff F,Ahlfeld T,Goronzy J,Tille E,Nimtschke U,Biewener A

doi

10.1186/s40001-019-0392-7

subject

Has Abstract

pub_date

2019-10-08 00:00:00

pages

issue

eissn

0949-2321

issn

2047-783X

pii

10.1186/s40001-019-0392-7

journal_volume

pub_type

杂志文章

在线工具

Biomechanical comparison of bi- and tricortical k-wire fixation in tension band wiring osteosynthesis.