Results 61 to 70 of about 3,757 (224)

Usefulness of multiecho fast field echo MRI in the evaluation of ossification of the posterior longitudinal ligament and dural ossification of the cervical spine. [PDF]

PLoS ONE, 2017
The diagnosis of ossification of the posterior longitudinal ligament (OPLL) on magnetic resonance imaging (MRI) is challenging. The purpose of this study is to evaluate the usefulness of the multiecho fast field echo (mFFE) MRI in the detection of ...
So-Yeon Lee, Yu Ri Shin, Hee Jin Park, Myung Ho Rho, Eun Chul Chung   +4 more
doaj   +1 more source

Serum Periostin Level Reflects Progression of Ossification of the Posterior Longitudinal Ligament

JBJS Open Access, 2022
Background:. Ossification of the posterior longitudinal ligament (OPLL), characterized by ectopic new bone formation in the spinal ligament, causes neurological impairment due to narrowing of the spinal canal.
Yoshiharu Kawaguchi, MD, PhD, Isao Kitajima, MD, PhD, Taketoshi Yasuda, MD, PhD, Shoji Seki, MD, PhD, Kayo Suzuki, MD, PhD, Hiroto Makino, MD, Yasuhiro Ujihara, MT, Tomohiro Ueno, MT, PhD, Nguyen Tran Canh Tung, MD, Yasuhito Yahara, MD, PhD   +9 more
doaj   +1 more source

Comparative Efficacy of Posterior Versus Lateral Endoscopic Approaches in the Management of Complex Lumbar Disc Herniation: A Retrospective Cohort Study

Orthopaedic Surgery, Volume 18, Issue 4, Page 695-709, April 2026.
PEID and PETD both demonstrate favorable clinical efficacy in treating the three types of complex lumbar disc herniation while showing differences in the extent of decompression achieved. ABSTRACT Introduction Complex lumbar disc herniation (CLDH), including huge, migrated, and calcified variants, poses surgical challenges due to factors such as deep ...
Wentao Liu, Jialin He, Mingzhi Liu, Hongtao Ge, Guangyao Wan, Derong Xu, Chuanli Zhou   +6 more
wiley   +1 more source

Effect of teriparatide on ligamentum flavum mesenchymal stem cells isolated from patients with ossification of the posterior longitudinal ligament

Journal of Pharmacological Sciences, 2021
Ossification of the posterior longitudinal ligament (OPLL) within the spinal canal sometimes leads to severe myelopathy. Teriparatide (TPD) is a recombinant human parathyroid hormone (PTH) (1–34), which promotes osteogenesis of mesenchymal stem cells ...
Ryo Araki, Toru Asari, Hitoshi Kudo, Eiji Sasaki, Ryota Yamauchi, Xizhe Liu, Kanichiro Wada, Gentaro Kumagai, Ayako Sasaki, Ken-Ichi Furukawa, Yasuyuki Ishibashi   +10 more
doaj   +1 more source

Delayed Postoperative Spinal Epidural Hematoma After Thoracic OPLL Surgery: A Case Report and Literature Review

Clinical Case Reports, Volume 14, Issue 1, January 2026.
ABSTRACT New axial pain with rapid neurological decline weeks after surgery for thoracic ossification of the posterior longitudinal ligament may signal delayed postoperative epidural hematoma. Immediate MRI and urgent decompression are critical. Consider occult clot‐stabilization defects such as factor XIII deficiency when routine coagulation tests are
Hayato Takei, Tetsuro Ohba, Nobuki Tanaka, Kotaro Oda, Kai Mizukami, Go Goto, Hirotaka Haro   +6 more
wiley   +1 more source

Segmental motion at the peak of the ossification foci is independent risk factor except for mal-alignment and thick ossification foci for poor outcome after laminoplasty for cervical ossification of the posterior longitudinal ligament: analyses in patients with positive K-line, lordotic alignment, and lower canal occupying ratio

Journal of Orthopaedic Surgery and Research, 2020
Purpose To elucidate the independent preoperative factors that have a significant impact on poor surgical outcome after laminoplasty for K-line (+) ossification of the posterior longitudinal ligament (OPLL).
Junya Saito, Masao Koda, Takeo Furuya, Satoshi Maki, Yasushi Ijima, Mitsuhiro Kitamura, Takuya Miyamoto, Sumihisa Orita, Kazuhide Inage, Fumio Hasue, Takayuki Fujiyoshi, Koshiro Kamiya, Yoshikazu Ikeda, Fumitake Nakajima, Mitsuhiro Hashimoto, Hiroshi Noguchi, Hiroshi Takahashi, Masashi Yamazaki, Seiji Ohtori   +18 more
doaj   +1 more source

Circumferential Spinal Cord Decompression through a Single Posterior Approach with Microendoscopy for Thoracic and Thoracolumbar Ossification of the Posterior Longitudinal Ligament [PDF]

Asian Spine Journal, 2015
Thoracic and thoracolumbar ossification of the posterior longitudinal ligament (OPLL) can be difficult to treat due to the anatomical position. The purpose of this study was to report the significance of a novel surgical technique that represented two ...
Shoji Seki, Hayato Mine, Yoshiharu Kawaguchi, Hiroto Makino, Tomoatsu Kimura   +4 more
doaj   +1 more source

Adaptive Inertia‐Damping Coordination for Sending‐End VSG Control in a Wind‐PV MMC‐HVDC Collection System

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes a DQN‐based adaptive inertia‐damping coordination strategy for frequency support in a wind‐solar MMC‐HVDC collection and transmission system. A physically interpretable coordination law is developed based on frequency deviation and RoCoF, while the DQN selects bounded parameter modes online instead of directly outputting continuous ...
Ruyin Sun, Liang Qin, Xiao Lei, Ruiqi Li, Kaipei Liu   +4 more
wiley   +1 more source

Characterization of human posterior longitudinal ligament ossification (OPLL).

, 2018
(A) Serum proteins downregulated in four OPLL patients vs. four healthy controls and (B) quantitative analysis of one of these proteins. In proteomics analysis, a specific peak of mass 10300 Da was decreased in OPLL patients compared to healthy subjects.
Michiyo Tsuru (5244218), Kensei Nagata (5244221), Hideaki Umeyama (3572720), Masahiro Takeuchi (2630299), Atsushi Ono (775522)   +4 more
core   +1 more source

IL17RC affects the predisposition to thoracic ossification of the posterior longitudinal ligament

Journal of Orthopaedic Surgery and Research, 2019
Background Thoracic ossification of the posterior longitudinal ligament (T-OPLL) can cause thoracic spinal stenosis, which results in intractable myelopathy and radiculopathy.
Peng Wang, Xiaoguang Liu, Xiao Liu, Chao Kong, Ze Teng, Yunlong Ma, Lei Yong, Chen Liang, Guanping He, Shibao Lu   +9 more
doaj   +1 more source