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

Content Provider	Springer Nature : BioMed Central
Author	Hao, Lu Li, Shengwen Liu, Junhui Shan, Zhi Fan, Shunwu Zhao, Fengdong
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.
Related Links	https://josr-online.biomedcentral.com/counter/pdf/10.1186/s13018-020-01695-6.pdf
Ending Page	5
Page Count	5
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s13018-020-01695-6
Journal	Journal of Orthopaedic Surgery and Research
Issue Number	1
Volume Number	15
Language	English
Publisher	BioMed Central
Publisher Date	2020-05-14
Access Restriction	Open
Subject Keyword	Orthopedics Surgical Orthopedics Modic changes Recurrent disc herniation Percutaneous endoscopic lumbar discectomy Herniated cartilage
Content Type	Text
Resource Type	Article
Subject	Surgery Orthopedics and Sports Medicine
Journal Impact Factor	2.8/2023
5-Year Journal Impact Factor	3/2023

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