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Published in: Journal of Orthopaedic Surgery and Research 1/2020

Open Access 01-12-2020 | Disc Herniation | Research article

Recurrent disc herniation following percutaneous endoscopic lumbar discectomy preferentially occurs when Modic changes are present

Authors: Lu Hao, Shengwen Li, Junhui Liu, Zhi Shan, Shunwu Fan, Fengdong Zhao

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2020

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Abstract

Objective

To investigate the relationship between Modic changes (MCs) and recurrent lumbar disc herniation (rLDH) and that between the herniated disc component and rLDH following percutaneous endoscopic lumbar discectomy (PELD).

Methods

We included 102 (65 males, 37 females, aged 20–66 years) inpatients who underwent PELD from August 2013 to August 2016. All patients underwent CT and MRI preoperatively. The presence and type of Modic changes were assessed. During surgery, the herniated disc component of each patient was classified into two groups: nucleus pulposus group and hyaline cartilage group. The association of herniated disc component with Modic changes was investigated. The incidence of rLDH was assessed based on a more than 2-year follow-up.

Results

In total, 11 patients were lost to follow-up; the other 91 were followed up during 24–60 months. Of the 91 patients, 99 discs underwent PELD; 28/99 (28.3%) had MCs. Type I and II MCs were seen in 9 (9.1%) and 19 (19.2%), respectively; no type III MCs were found. Among 28 endplates with MCs, according to the herniated disc component, 18/28 (64.3%) showed evidence of hyaline cartilage in the intraoperative specimens, including 6/9 and 12/19 endplates with type I and II MCs, respectively. Among 71 endplates without MCs, 14/71 (19.7%) showed evidence of hyaline cartilage in the intraoperative specimens. Hyaline cartilage was more common in patients with MCs (P < 0.05). We found 2 cases of rLDH in the non-MC group (n = 71); 6 cases of rLDH were found in the MC group (n = 28), including 2 and 4 cases for types I and II, respectively. There was no significant difference between types I and II (P > 0.05). rLDH was more common in patients with MCs (P < 0.05). We found 5 rLDH cases in the hyaline cartilage group (n = 32); 3 rLDH cases were found in the nucleus pulposus group (n = 67). rLDH was more common in the hyaline cartilage group (P < 0.05).

Conclusions

rLDH following PELD preferentially occurs when MCs or herniated cartilage are present.
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Metadata
Title
Recurrent disc herniation following percutaneous endoscopic lumbar discectomy preferentially occurs when Modic changes are present
Authors
Lu Hao
Shengwen Li
Junhui Liu
Zhi Shan
Shunwu Fan
Fengdong Zhao
Publication date
01-12-2020
Publisher
BioMed Central
Published in
Journal of Orthopaedic Surgery and Research / Issue 1/2020
Electronic ISSN: 1749-799X
DOI
https://doi.org/10.1186/s13018-020-01695-6

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