Intra-operative measurement of applied forces during anterior scoliosis correction
Fairhurst, Helen, Little, Paige, & Adam, Clayton (2016) Intra-operative measurement of applied forces during anterior scoliosis correction. Clinical Biomechanics, 40, pp. 68-73.
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2016 Fairhurst et al Final Revised Author Version ePrints.pdf. Available under License Creative Commons Attribution Non-commercial No Derivatives 2.5. |
Description
Background - Spinal instrumentation and fusion for the treatment of scoliosis is primarily a mechanical intervention to correct the deformity and halt further progression. While implant-related complications remain a concern, little is known about the magnitudes of the forces applied to the spine during surgery, which may affect post-surgical outcomes. In this study, the compressive forces applied to each spinal segment during anterior instrumentation were measured in a series of patients with Adolescent Idiopathic Scoliosis. Methods - A force transducer was designed and retrofit to a routinely used surgical tool, and compressive forces applied to each segment during surgery were measured for 15 scoliosis patients. Cobb angle correction achieved by each force was measured on intra-operative fluoroscope images. Relative changes in orientation of the screw within the vertebra were also measured to detect intra-operative screw plough. Findings - Intra-operative forces were measured for a total of 95 spinal segments. The mean applied compressive force was 540 N (SD 230 N, range 88 N–1019 N). There was a clear trend for higher forces to be applied at segments toward the apex of the scoliosis. Fluoroscopic evidence of screw plough was detected at 10 segments (10.5%). Interpretation - The magnitude of forces applied during anterior scoliosis correction vary over a broad range. These forces do reach magnitudes capable of causing intra-operative vertebral body screw plough. Surgeons should be aware there is a risk for tissue overload during correction, however the clinical implications of intra-operative screw plough remain unclear. The dataset presented here is valuable for providing realistic input parameters for in silico surgical simulations.
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ID Code: | 222213 | ||||
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Item Type: | Contribution to Journal (Journal Article) | ||||
Refereed: | Yes | ||||
ORCID iD: |
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Measurements or Duration: | 6 pages | ||||
Keywords: | adolescent idiopathic scoliosis, anterior scoliosis surgery, deformity surgery, in vivo measurements, scoliosis, scoliosis correction surgery, spine biomechanics, spine deformity, thoracic spine | ||||
DOI: | 10.1016/j.clinbiomech.2016.10.014 | ||||
ISSN: | 0268-0033 | ||||
Pure ID: | 33076833 | ||||
Divisions: | Past > Institutes > Institute of Health and Biomedical Innovation Past > QUT Faculties & Divisions > Science & Engineering Faculty |
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Copyright Owner: | Consult author(s) regarding copyright matters | ||||
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Deposited On: | 06 Nov 2021 15:45 | ||||
Last Modified: | 09 Feb 2025 19:53 |
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