Detaillierte Beitrags-Information
| Beitragstitel | Surgical treatment of Neer type V lateral clavicle fractures – a comparative study in human cadavers |
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| Beitragscode | P07 |
| Autoren | |
| Präsentationsform | Poster |
| Themengebiete |
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| Abstract |
Background: Treatment of distal clavicle fractures with bony avulsion of the coracoclavicular (CC) ligaments is challenging and a single gold-standard surgical technique has not yet been defined. The purpose of this study was to investigate the biomechanical fixation strength of the CC stand-alone Cow-Hitch suture repair technique in comparison with the clavicle hook plate and the lateral locking plate with CC suture repair fixation techniques. Material: 3D guided Neer Type V fractures of the clavicle were created in 18 cadaveric shoulders, which were matched by age and gender in 3 groups: (1) clavicle hook plate (Group HP), (2) lateral locking plate fixation with CC suture repair (Group LPCC) and (3) stand-alone suture repair using the Cow-Hitch technique (Group CH). After preconditioning with 25 N for 10 cycles the specimens were cycled for 500 cycles from 10N to 70N. Displacement and ultimate load to failure were documented and analyzed with the data acquisition system. Results: There was a significant difference in the fracture displacement during cyclic loading between the LPCC group and the HP group (0.6 vs. 1.7 mm; p = 0.02), as well as between CH and HP group (0.5 vs. 1.7 mm; p = 0.004). There was no significant difference between the LPCC group and the CH group (p = 0.544). The CH group and the LPCC group showed a significant higher stiffness compared to the HP group (p < 0.001 and p = 0.003 respectively). The CH group showed a significant higher ultimate load to failure compared with the HP group (429 vs. 172 N; p = 0.005), but not compared with the LPCC group (428.7 vs. 258.2 N; p = 0.071). Conclusion: The CC-Stand-Alone Cow-Hitch technique and the locking plate fixation technique with suture repair showed superior biomechanical results than the hook plate in fixation of Neer type V fractures of the distal clavicle. Both techniques showed comparable biomechanical fixation strength, however, the CH technique has potential advantages such as less soft tissue stripping, low costs, and simple technique. |