Biomechanical Analysis of a Modified Triangular Osteosynthesis Technique for Treatment of Spinopelvic Dissociation.

Autor:	Voort WV; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., O'Donnell E; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., Haffner M; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., Garcia-Nolan T; Department Veterinary Medicine: Surgical & Radiological Sciences, UC Davis School of Veterinary Medicine, Sacramento, CA; and., Simister SK; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., Le H; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., Klineberg E; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA., Eastman JG; Department of Orthopaedic Surgery, University of Texas Health Science Center at Houston, Houston, TX., Saiz AM Jr; Department of Orthopaedic Surgery, UC Davis, Sacramento, CA.
Jazyk:	angličtina
Zdroj:	Journal of orthopaedic trauma [J Orthop Trauma] 2024 Nov 01; Vol. 38 (11S), pp. S35-S39.
DOI:	10.1097/BOT.0000000000002882
Abstrakt:	Objectives: The purpose of this study was to evaluate the biomechanical stability of a modified triangular osteosynthesis construct with S1 pedicle screws compared with other described lumbopelvic fixation constructs in a U-type sacral fracture model. Methods: U-type sacral fractures were created in validated fourth-generation spinopelvic models. Four different constructs were cyclically loaded with displacement measured in all planes: (1) bilateral L5 pedicle screws with rods attached to iliac bolts, (2) bilateral L5 and S1 pedicle screws with rods attached to iliac bolts, (3) bilateral L5 pedicle screws with rods attached to iliac bolts with a transsacral-transiliac screw, and (4) bilateral L5 and S1 pedicle screws with rods attached to iliac bolts with a transsacral-transiliac screw. Results: The bilateral L5 and S1 pedicle screws with rods attached to iliac bolts with a transsacral-transiliac screw construct had significantly decreased horizontal, vertical, and angular displacement compared with all other constructs. Conclusions: From a biomechanical perspective, a modified triangular osteosynthesis construct with S1 pedicle screws improves stability in fixation of U-type sacral fractures. Competing Interests: A. M. Saiz: AAOS: committee member; OTA: committee member; AO: committee member; ORS: committee member. E. Klineberg: Agnovos: Paid consultant; AO: Paid consultant; AO Spine: Board or committee member; Research support; DePuy, A Johnson & Johnson Company: Paid consultant; Medtronic: Paid consultant; SI Bone: Paid consultant; Stryker: Paid consultant. J. G. Eastman: Globus Medical: Paid consultant; Osteocentric: IP royalties; Stryker: Paid consultant, DePuy Synthes: Paid consultant; AO: committee member. The remaining authors report no conflicts of interest. (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
Databáze:	MEDLINE
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