Biomechanical comparison of transosseous re-fixation of the deep fibres of the distal radioulnar ligaments versus deep and superficial fibres: a cadaver study |
| |
Authors: | Christian K. Spies Anja Niehoff Frank Unglaub Lars P. Müller Martin F. Langer Wolfram F. Neiss Johannes Oppermann |
| |
Affiliation: | 1.Department of Hand Surgery,Vulpius Klinik,Bad Rappenau,Germany;2.Cologne Center for Musculoskeletal Biomechanics (CCMB) Medical Faculty,University of Cologne,K?ln,Germany;3.Institute of Biomechanics and Orthopaedics,German Sport University Cologne,K?ln,Germany;4.Medical Faculty Mannheim of the Ruprecht-Karls University Heidelberg,Mannheim,Germany;5.Department of Orthopaedics and Traumatology,University Hospital Cologne,K?ln,Germany;6.Department of Orthopaedics and Traumatology,University Hospital Münster,Münster,Germany;7.Department of Anatomy I, Medical Faculty,University of Cologne,K?ln,Germany |
| |
Abstract: | PurposeWe hypothesized that the re-fixation of the deep and superficial fibres of the distal radioulnar ligaments provide improved stability compared to reconstruction of the deep fibres alone.MethodsFourteen fresh-frozen cadaver upper extremities were used for biomechanical testing. Transosseous re-fixation of the deep fibres of the distal radioulnar ligaments alone (single mattress suture group; n?=?7) was compared to the transosseous re-attachment of the deep and superficial fibres (double mattress suture group; n?=?7). Cyclic load application provoked palmar translation of the radius with respect to the rigidly affixed ulna. Creep, stiffness, and hysteresis were obtained from the load-deformation curves, respectively. Testing was done in neutral forearm rotation, 60° pronation, and 60° supination.ResultsThe re-fixation techniques did not differ significantly regarding the viscoelastic parameters creep, hysteresis, and stiffness. Several significant differences of one cycle to the consecutive one within each re-fixation group could be detected especially for creep and hysteresis. No significant differences between the different forearm positions could be detected for each viscoelastic parameter.ConclusionsThe re-fixation techniques did not differ significantly regarding creep, hysteresis, and stiffness. This means that the additional re-attachment of the superficial fibres may not provide greater stability to the DRUJ. Bearing in mind that the study was a cadaver examination with a limited number of specimens we may suppose that the re-attachment of the superficial fibres seem to be unnecessary. A gradual decline of creep and hysteresis from first to last loading-unloading cycle is to be expected and typical of ligaments which are viscoelastic. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|