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"Myeong Jin Ko"

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"Myeong Jin Ko"

Original Articles

Degenerative Spinal Diseases

Incidence and Risk Factors of Postoperative Ileus in Oblique Lumbar Interbody Fusion Surgery: A Retrospective Study
Young-Seok Lee, Myeong Jin Ko, Seung Won Park
Neurospine 2025;22(1):222-230.   Published online March 31, 2025
DOI: https://doi.org/10.14245/ns.2449070.535

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Incidence and Risk Factors of Postoperative Ileus in Oblique Lumbar Interbody Fusion Surgery: A Retrospective Study
Neurospine. 2025;22(1):222-230.   Published online March 31, 2025
DOI: https://doi.org/10.14245/ns.2449070.535
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Incidence and Risk Factors of Postoperative Ileus in Oblique Lumbar Interbody Fusion Surgery: A Retrospective Study
Neurospine. 2025;22(1):222-230.   Published online March 31, 2025
DOI: https://doi.org/10.14245/ns.2449070.535
Close
Purpose
Postoperative ileus (POI) typically occurs after abdominal surgery but can also affect patients undergoing spinal surgery via the lateral retroperitoneal approach, such as oblique lumbar interbody fusion (OLIF). Therefore, this study aimed to investigate the incidence and risk factors associated with POI in OLIF.
Methods
This retrospective study examined a cohort of 465 patients who underwent OLIF from 2015 to 2023. Patient demographics, comorbidities, pre- and postoperative laboratory test results, and perioperative status were assessed. General condition of patients was assessed using the modified frailty index-11 (mFI-11), prognostic nutrition index, and geriatric nutrition risk index. In OLIF, the size and location of the psoas muscle involved in retraction and its relationship with the vertebral body were also investigated.
Results
POI occurred in 19 patients (4%). Lower mFI-11 was linked to a higher risk of POI. While psoas muscle size had no significant effect on the risk of POI, the anterior location of the psoas muscle relative to the vertebral body was associated with a higher occurrence of POI. Multivariate logistic regression analysis of POI identified mFI-11 as the most significant risk factor (p = 0.003).
Conclusion
This study demonstrated that frailty and nutritional status can influence the occurrence of POI after OLIF. Additionally, bowel manipulation associated with the location of psoas muscle and vertebral body was identified as a risk factor. Proper assessment and improvement in patient frailty and nutritional status before surgery can help predict and prevent the occurrence of postoperative POI.

Citations

Citations to this article as recorded by  Crossref logo
  • Development and comparison of machine learning models for predicting postoperative ileus after posterior thoracolumbar fracture surgery
    Yantong Zhang, Renji Zheng, Huiqing Gao, Yingfeng Zhou, Jun Li, Liqiong Chen
    European Spine Journal.2026; 35(3): 1401.     CrossRef
  • Risk factors for prolonged postoperative ileus in elderly patients undergoing laparoscopic radical resection for colorectal cancer
    Huan Liu, Yang Chen, Shi-Gang Guo, Zhu Liu, Yong-Shuai Huang, Zhen-Dong Zhu, Yu-Jie Feng, Qing Yang, Ya-Lei Liu
    World Journal of Gastrointestinal Oncology.2026;[Epub]     CrossRef
  • 6,818 View
  • 117 Download
  • 2 Web of Science
  • 2 Crossref
An Anatomical Clue for Minimizing Iliac Vein Injury During the Anterolateral Approach at L5–S1 Level: A Cadaveric Study
Myeong Jin Ko, Seung Won Park, Seong Hyun Wui
Neurospine 2021;18(4):833-838.   Published online December 31, 2021
DOI: https://doi.org/10.14245/ns.2142494.247

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An Anatomical Clue for Minimizing Iliac Vein Injury During the Anterolateral Approach at L5–S1 Level: A Cadaveric Study
Neurospine. 2021;18(4):833-838.   Published online December 31, 2021
DOI: https://doi.org/10.14245/ns.2142494.247
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An Anatomical Clue for Minimizing Iliac Vein Injury During the Anterolateral Approach at L5–S1 Level: A Cadaveric Study
Neurospine. 2021;18(4):833-838.   Published online December 31, 2021
DOI: https://doi.org/10.14245/ns.2142494.247
Close
Objective
The injury to the common iliac vein (CIV) seems to be the most important concern during the anterior approach to the spine at L5–S1 level. We investigated the anatomy of the L5–S1 vertebral structures related to the CIV through a cadaveric study to find an anatomical clue for safe dissection of CIV.
Methods
Ten cadavers were prepared for this study. After removing the peritoneum and the presacral fascia, the section from the lower part of the L5 to the upper part of the S1 vertebral body was removed with the CIV attached. After decalcification, 2 sections in the vertical and horizontal directions were made for histological study.
Results
An adipose tissue layer was present between the intervertebral disc and CIV. The adipose tissue layer in 6 cadavers was thin, and in 3 of these cadavers, the CIV was attached to the vertebral body and the disc. In the other 4 cadavers, the CIV was clearly separated from the vertebral body and the disc by the intervening adipose tissue layer (IATL). Under the microscope, a thin layer surrounding the anterior longitudinal ligament, periosteum, and disc was observed, and we named this structure the ‘perivertebral membrane’. The perivertebral membrane was attached to the CIV when there was no IATL, but a potential space was detected under the membrane.
Conclusion
There was a thin membrane, perivertebral membrane, between the CIV and L5–S1 disc. In cases with CIV adhesion to the disc due to the absence of IATL, the CIV may be mobilized indirectly through the perivertebral membrane.

Citations

Citations to this article as recorded by  Crossref logo
  • Complications of anterior-to-psoas and their avoidance and treatment
    Chang Hwa Ham, Woo-Keun Kwon, Joo Han Kim
    Seminars in Spine Surgery.2025; 37(1): 101161.     CrossRef
  • 8,643 View
  • 159 Download
  • 1 Web of Science
  • 1 Crossref
A New Shielding Curtain for Protection of Intraoperative Radiation During Minimally Invasive Spine Surgery
Se Hoon Park, Myeong Jin Ko, Yong Sook Park, Jaehan Yun, Hongsik Byun, Seung Won Park
Neurospine 2020;17(1):288-293.   Published online October 15, 2019
DOI: https://doi.org/10.14245/ns.1938282.141

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A New Shielding Curtain for Protection of Intraoperative Radiation During Minimally Invasive Spine Surgery
Neurospine. 2020;17(1):288-293.   Published online October 15, 2019
DOI: https://doi.org/10.14245/ns.1938282.141
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A New Shielding Curtain for Protection of Intraoperative Radiation During Minimally Invasive Spine Surgery
Neurospine. 2020;17(1):288-293.   Published online October 15, 2019
DOI: https://doi.org/10.14245/ns.1938282.141
Close
Objective
Gradually increasing number of minimally invasive spine surgery (MISS), there is an increasing risk of radiation exposure to medical personnel during the surgery. We measured the radiation exposure of the operating room personnel during MISS, tried to find the riskiest person, and checked the effectiveness of a new lead-composite shielding curtain.
Methods
Radiation exposure of medical staffs (operator, first assistant, anesthesiologist, and scrub nurse) involved in MISS procedures of 35 patients without shielding curtain (nonshield group) and 35 patients with shielding curtain (shield group). The shielding curtain had 0.25-mm nominal lead equivalent and was mounted on 2 frame bars fixed on the operating table.
Results
In the nonshield group, radiation exposure was significantly higher in the order of operator > first assistant > scrub nurse > anesthesiologist (p < 0.001) during both anteroposterior (AP) and lateral views. In the shield group, the radiation exposure of the operator and the scrub nurse decreased significantly by 94.1% and 76.4% in AP view (p < 0.001), and by 96.3% and 73.9% in lateral view (p < 0.001), respectively.
Conclusion
Since the radiation dose of the operator was highest in a C-arm-guided MISS, there is a high priority need to protect the operator from the radiation exposure. The shielding curtain could most effectively reduce the radiation exposure of the operator.

Citations

Citations to this article as recorded by  Crossref logo
  • Navigation and Robotic Single-Position Prone LLIF: First Cases in Brazil
    Rodrigo de Souza Lima, Luciano de Almeida Ferrer, Luciana Feitosa Ferrer, Vivian Nogueira de Castro Lima, Renata Silva Amaral
    World Neurosurgery.2024; 191: e72.     CrossRef
  • Computer-Assisted Navigation Is Associated With Decreased Rates of Hardware-Related Revision After Instrumented Posterior Lumbar Fusion
    Patawut Bovonratwet, Alex Gu, Aaron Z. Chen, Andre M. Samuel, Avani S. Vaishnav, Evan D. Sheha, Catherine H. Gang, Sheeraz A. Qureshi
    Global Spine Journal.2023; 13(4): 1104.     CrossRef
  • Unilateral Percutaneous Kyphoplasty Using a Novel Guide Device for Thoracolumbar Osteoporotic Vertebral Fracture
    Hongwei Wang, Hailong Yu, Yunpeng Zhu, Hongwen Gu, Bin Zheng, Yuanhang Zhao, Wenfeng Han, Liangbi Xiang
    Orthopaedic Surgery.2023; 15(4): 993.     CrossRef
  • Radiation-Shielding Devices: The Best Combination for Spine Interventional Procedures
    Young Seok Ji, Eun Kyul Park, Hyuk Chan Kwon, Woong Ki Han, Francis Sahngun Nahm
    Journal of Vascular and Interventional Radiology.2022; 33(3): 225.     CrossRef
  • Efficiency of novel shielding curtains combined with pulsed irradiation for reducing radiation exposure in an operating room: Human renal collecting system phantom study
    Yasuhiro Kaku, Takaaki Inoue, Yu Charlie, Satoshi Imai, Fukashi Yamamichi, Masato Fujisawa
    International Journal of Urology.2022; 29(6): 571.     CrossRef
  • Effectiveness of a radiation protective device for anesthesiologists and transesophageal echocardiography operators in structural heart disease interventions
    Hitoshi Miyazaki, Yoshiyuki Umezu, Emi Kinoshita, Kazuhisa Ogawa, Ken-ichi Hiasa, Hiromichi Sonoda, Yuji Karashima, Toyoyuki Kato, Akira Shiose
    Cardiovascular Intervention and Therapeutics.2021; 36(4): 523.     CrossRef
  • 19,037 View
  • 167 Download
  • 6 Web of Science
  • 6 Crossref

Clinical Article

Unusual Clinical Presentations of Cervical or Lumbar Dorsal Ramus Syndrome
Shin Jae Kim, Myeong Jin Ko, Young Seok Lee, Seung Won Park, Young Baeg Kim, Chan Chung
Korean J Spine 2014;11(2):57-61.   Published online June 30, 2014
DOI: https://doi.org/10.14245/kjs.2014.11.2.57

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Unusual Clinical Presentations of Cervical or Lumbar Dorsal Ramus Syndrome
Korean J Spine. 2014;11(2):57-61.   Published online June 30, 2014
DOI: https://doi.org/10.14245/kjs.2014.11.2.57
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Unusual Clinical Presentations of Cervical or Lumbar Dorsal Ramus Syndrome
Korean J Spine. 2014;11(2):57-61.   Published online June 30, 2014
DOI: https://doi.org/10.14245/kjs.2014.11.2.57
Close
Objective

Patients with cervical (CDRS) or lumbar dorsal ramus syndrome (LDRS) are characterized by neck or low back pain with referred pain to upper or lower extremities. However, we experienced some CDRS or LDRS patients with unusual motor or bladder symptoms. We analyzed and reviewed literatures on the unusual symptoms identified in patients with CDRS or LDRS.

Methods

This study included patients with unusual symptoms and no disorders of spine and central nervous system, a total of 206 CDRS/LDRS patients over the past 3 years. We diagnosed by using double diagnostic blocks for medial branches of dorsal rami of cervical or lumbar spine with 1% lidocaine or 0.5% bupivacaine for each block with an interval of more than 1 week between the blocks. Greater than 80% reduction of the symptoms, including unusual symptoms, was considered as a positive response. The patients with a positive response were treated with radiofrequencyneurotomy.

Results

The number of patients diagnosed with CDRS and LDRS was 86 and 120, respectively. Nine patients (10.5%) in the CDRS group had unusual symptoms, including 4 patients with motor weakness of the arm, 3 patients with tremors, and rotatory torticollis in 2 patients. Ten patients (8.3%) in the LDRS group showed unusual symptoms, including 7 patients with motor weakness of leg, 2 patients with leg tremor, and urinary incontinence in 1 patient. All the unusual symptoms combined with CDRS or LDRS were resolved after treatment.

Conclusion

It seems that the clinical presentationssuch as motor weakness, tremor, urinary incontinence without any other etiologic origin need to be checked for unusual symptoms of CDRS or LDRS.

Citations

Citations to this article as recorded by  Crossref logo
  • Anatomical study and clinical significance of the posterior ramus of the spinal nerve of the lumbar spine
    Zhenfeng Zhang, Jing Liu, Yejie Xu, Zeyan Chen, Shiwen Luo, Xin Zhang, Guoliang Wang, Liang Cheng
    Frontiers in Cell and Developmental Biology.2022;[Epub]     CrossRef
  • Anatomy, Causes, and Treatments of Dorsal Ramus Compression Syndromes: A Review
    Grayson Baden
    The Spine Scholar.2018; 2(1): 15.     CrossRef
  • Evaluation of 2-stage Treatment for Cervical Dorsal Rami Entrapment Syndrome
    Qi Li, Jing-Wu Wang, Bing-Fang Zeng, Yi-Ming Cai, Chang-Qing Zhang
    The Neurologist.2017; 22(5): 157.     CrossRef
  • Efficacy of Lumbar Segmental Stabilization Exercises and Breathing Exercises on Segmental Stabilization in Lumbar Instability Patients
    Sung Rae Yang, Young Mi Kim, Sun Ja Park, Cheol Yong Kim
    The Journal of Korean Physical Therapy.2017; 29(5): 234.     CrossRef
  • 11,279 View
  • 82 Download
  • 4 Crossref
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