Three-dimensional morphological changes in ossification of the posterior longitudinal ligament of the thoracic spine following posterior decompression and fusion surgery.

Autor: Shibuya Y; Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan. Electronic address: shib0919@yahoo.co.jp., Katsumi K; Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan; Spine Center, Department of Orthopedic Surgery, Niigata Central Hospital, 1-18 Shinkocho, Chuo-ku, Niigata 950-8556, Japan., Watanabe K; Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan; Niigata Spine Surgery Center, Kameda Daiichi Hospital, 2-5-22, Nishi-machi, Konan-Ku, Niigata, 950-0165, Japan., Ohashi M; Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan., Hirano T; Department of Orthopedic Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, 4132 Urasa, Minami-uonuma City, Niigata 949-7302, Japan., Izumi T; Department of Orthopedic Surgery, Niigata Minami Hospital, 2007-6, Toyano, Chuo-ku, Niigata 950-8601, Japan., Kawashima H; Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan.
Jazyk: angličtina
Zdroj: Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia [J Clin Neurosci] 2024 Sep; Vol. 127, pp. 110764. Date of Electronic Publication: 2024 Jul 24.
DOI: 10.1016/j.jocn.2024.110764
Abstrakt: Background: Using three-dimensional image analysis, we previously reported suppression of ossification progression following posterior fusion surgery for cervical ossification of the posterior longitudinal ligament (OPLL). Here, we aimed to evaluate the morphological changes in thoracic OPLL using three-dimensional analysis.
Methods: Seventeen patients (eight males and nine females; mean age, 56.9 years) who underwent posterior decompression and fusion (PDF) for thoracic OPLL were included. We evaluated the OPLL volume using a novel analysis involving creating a three-dimensional model from computed tomography images to measure the volume accurately. Additionally, OPLL thickness, width, and length were measured on sagittal and axial computed tomography planes. We investigated the morphological changes in OPLL after PDF. Furthermore, patients were classified into reduced volume and increased volume groups and associated factors were compared.
Results: The mean OPLL volume was 1,677 mm 3 preoperatively and 1,705 mm 3 at the final examination and did not significantly differ. Volume reduction was observed in 7 of 17 cases (41 %). Although OPLL width and length significantly increased postoperatively, OPLL thickness significantly reduced from 7.1 mm preoperatively to 6.5 mm postoperatively (all, p < 0.05). The annual thickness changes significantly differed (p <0.05) in the reduced volume group (-0.36 mm/year) compared to that in the increased volume group (-0.06 mm/year).
Conclusions: Thoracic OPLL after PDF becomes thinner in the anteroposterior direction but increases horizontally and craniocaudally. The reduction in OPLL thickness was related to a reduction in ossification volume. We believe that volume reduction in thoracic OPLL is influenced by pulsation of the dural sac.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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