Woehl, Rebecca and Maier, Johannes and Gehmert, Sebastian and Palm, Christoph and Riebschlaeger, Birgit and Nerlich, Michael and Huber, Michaela (2018) 3D analysis of Osteosyntheses material using semi-automated CT segmentation: a case series of a 4 corner fusion plate. BMC MUSCULOSKELETAL DISORDERS, 19: 52. ISSN 1471-2474,
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Backround: Scaphoidectomy and midcarpal fusion can be performed using traditional fixation methods like K-wires, staples, screws or different dorsal (non) locking arthrodesis systems. The aim of this study is to test the Aptus four corner locking plate and to compare the clinical findings to the data revealed by CT scans and semi-automated segmentation. Methods: This is a retrospective review of eleven patients suffering from scapholunate advanced collapse (SLAC) or scaphoid non-union advanced collapse (SNAC) wrist, who received a four corner fusion between August 2011 and July 2014. The clinical evaluation consisted of measuring the range of motion (ROM), strength and pain on a visual analogue scale (VAS). Additionally, the Disabilities of the Arm, Shoulder and Hand (QuickDASH) and the Mayo Wrist Score were assessed. A computerized tomography (CT) of the wrist was obtained six weeks postoperatively. After semi-automated segmentation of the CT scans, the models were post processed and surveyed. Results: During the six-month follow-up mean range of motion (ROM) of the operated wrist was 60 degrees, consisting of 30 degrees extension and 30 degrees flexion. While pain levels decreased significantly, 54% of grip strength and 89% of pinch strength were preserved compared to the contralateral healthy wrist. Union could be detected in all CT scans of the wrist. While X-ray pictures obtained postoperatively revealed no pathology, two user related technical complications were found through the 3D analysis, which correlated to the clinical outcome. Conclusion: Due to semi-automated segmentation and 3D analysis it has been proved that the plate design can keep up to the manufacturers' promises. Over all, this case series confirmed that the plate can compete with the coexisting techniques concerning clinical outcome, union and complication rate.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCAPHOLUNATE ADVANCED COLLAPSE; DORSAL CIRCULAR PLATE; 4-CORNER ARTHRODESIS; BONE-GRAFT; WRIST; FIXATION; INTERCARPAL; LOCKING; 4CF; SLAC wrist; SNAC wrist; Semi-automated segmentation; 3D analysis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Mar 2020 09:22 |
| Last Modified: | 18 Mar 2020 09:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15045 |
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