Cervical myelopathy due to OPLL induced by minor trauma.

Saika, Minoru; Kawai, Shinya; Sunago, Kouzou; Ashida, Ichirou; Takano, Shinichi; Urano, Masayuki; Kido, Kenji; Shigetomi, Mitsunori

doi:10.5035/nishiseisai.36.794

Cited by 2 publications

(2 citation statements)

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“…In individuals with preexistent CSM, trauma to the neck can cause severe neurologic deterioration. [1][2][3][4][5][6][7][8][9] Dynamic factors, such as abnormal or excessive mobility of the spinal column, are also strongly associated with the clinical progression of CSM when a considerable degree of canal impingement occurs. [10][11][12][13][14] One type of abnormal mobility, cervical segmental instability, is an important factor that contributes to neurologic deficits in CSM patients.…”

Section: Introductionmentioning

confidence: 98%

Trauma-induced spinal cord injury in cervical spondylotic myelopathy with or without lower cervical instability

Chen

Wang

Chen

et al. 2013

Journal of Clinical Neuroscience

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Section: Introductionmentioning

confidence: 98%

Trauma-induced spinal cord injury in cervical spondylotic myelopathy with or without lower cervical instability

Chen

Wang

Chen

et al. 2013

Journal of Clinical Neuroscience

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“…In this prospective study, 70 of 368 patients (19%) developed myelopathy during the follow-up period, and 9% developed trauma-induced myelopathy (6). Several other authors have also reported a link between minor trauma and the onset or aggravation of myelopathy (7)(8)(9)(10).…”

Section: Discussionmentioning

confidence: 82%

Flexion Model Simulating Spinal Cord Injury Without Radiographic Abnormality in Patients With Ossification of the Longitudinal Ligament: The Influence of Flexion Speed on the Cervical Spine

Kato

Kanchiku

Imajo

et al. 2009

The Journal of Spinal Cord Medicine

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Background/Objective: It is suspected that the speed of the motion of the spinal cord under static compression may be the cause of spinal cord injury (SCI). However, little is known about the relationship between the speed of the motion of the spinal cord and its stress distributions. The objective was to carry out a biomechanical study of SCI in patients with ossification of the longitudinal ligament without radiologic evidence of injury. Methods: A 3-dimensional finite element spinal cord model was established. After the application of static compression, the model underwent anterior flexion to simulate SCI in ossification of the longitudinal ligament patients without radiologic abnormality. Flexion of the spine was assumed to occur at 1 motor segment. Flexion angle was 5u, and flexion speeds were 0.5u/s, 5u/s, and 50u/s. Stress distributions inside of the spinal cord were evaluated. Results: Stresses on the spinal cord increased slightly after the application of 5u of flexion at a speed of 0.5u/s. Stresses became much higher at a speed of 5u/s and increased further at 50us. Conclusions: The stress distribution of the spinal cord under static compression increased with faster flexion speed of the spinal cord. High-speed motion of the spinal cord under static compression may be one of the causes of SCI in the absence of radiologic abnormality.

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Cervical myelopathy due to OPLL induced by minor trauma.

Cited by 2 publications

References 1 publication

Trauma-induced spinal cord injury in cervical spondylotic myelopathy with or without lower cervical instability

Trauma-induced spinal cord injury in cervical spondylotic myelopathy with or without lower cervical instability

Flexion Model Simulating Spinal Cord Injury Without Radiographic Abnormality in Patients With Ossification of the Longitudinal Ligament: The Influence of Flexion Speed on the Cervical Spine

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