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Correlation Between the Severity of Multifidus Fatty Degeneration and the Size of Ossification of Posterior Longitudinal Ligament at Each Spinal Level

 Jinyoung Park  ;  Yong Eun Cho  ;  Kyung Hyun Kim  ;  Sanghoon Shin  ;  Sungjun Kim  ;  Chae Hwan Lim  ;  Seok Young Chung  ;  Yoon Ghil Park 
 NEUROSPINE, Vol.20(3) : 921-930, 2023-09 
Journal Title
Issue Date
Cervical spine ; Multifidus ; Ossification of posterior longitudinal ligament ; Paraspinal muscles ; Range of motion ; Spinal canal
Objective: This study aimed to investigate the correlation between ossification of the posterior longitudinal ligament (OPLL) size and multifidus fatty degeneration (MFD), hypothesizing that larger OPLL sizes are associated with worse MFD.

Methods: One hundred four patients with cervical OPLL who underwent surgery were screened. OPLL occupying diameter and area ratios, the severity of MFD using the Goutallier classification, and range of motion (ROM) of cervical flexion-extension (ΔCobb) were measured. Correlation analyses between OPLL size, MFD severity, and ΔCobb were conducted. MFD severity was compared for each OPLL type using one-way analysis of variance.

Results: The final clinical data from 100 patients were analyzed. The average Goutallier grade of C2-7 significantly correlated with the average OPLL diameter and area occupying ratios, and OPLL involved vertebral level (r = 0.58, p < 0.01; r = 0.40, p < 0.01; r = 0.47, p < 0.01, respectively). The OPLL size at each cervical level significantly correlated with MFD of the same or 1-3 adjacent levels. ΔCobb angle was negatively correlated with the average Goutallier grade (r = -0.31, p < 0.01) and average OPLL occupying diameter and area ratios (r = -0.31, p < 0.01; r = -0.35, p < 0.01, respectively). Patients with continuous OPLL exhibited worse MFD than those with segmental OPLL (p < 0.01).

Conclusion: OPLL size is clinically correlated with MFD and cervical ROM. OPLL at one spinal level affects MFD at the same and 1-3 adjacent spinal levels. The worsening severity of MFD is associated with the longitudinal continuity of OPLL.
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1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Hyun(김경현)
Kim, Sungjun(김성준) ORCID logo https://orcid.org/0000-0002-7876-7901
Park, Yoon Ghil(박윤길) ORCID logo https://orcid.org/0000-0001-9054-5300
Park, Jinyoung(박진영) ORCID logo https://orcid.org/0000-0003-4042-9779
Shin, Sang Hoon(신상훈)
Cho, Yong Eun(조용은) ORCID logo https://orcid.org/0000-0001-9815-2720
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