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Herniated Intervertebral Disc l: Introduction

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Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...

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Herniated Lumbar Disks: Real-time MR Imaging Evaluation during Continuous Traction.

Tae-Sub Chung¹, Hea-Eun Yang, Sung Jun Ahn

¹From the Department of Radiology (T.S.C., S.J.A.) and Department of Rehabilitation Medicine, Rehabilitation Institute of Neuromuscular Disease (J.H.P.), Yonsei University College of Medicine, 211 Eonjuro, Gangnam-gu, Seoul 135-720, Korea; and Department of Physical Medicine and Rehabilitation, Veterans Health Service Medical Center, Seoul, Korea (H.E.Y.).

|January 23, 2015

Summary

Real-time MRI shows lumbar traction changes herniated discs and surrounding structures. Traction effectively reduces disc volume and increases vertebral column length, offering a visual understanding of its effects.

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Area of Science:

Radiology
Orthopedics
Spinal Imaging

Background:

Lumbar disk herniation is a common condition.
Understanding the biomechanical effects of traction is crucial for treatment.
Real-time imaging can provide novel insights into traction therapy.

Purpose of the Study:

To assess morphologic changes in herniated lumbar intervertebral disks and surrounding structures during lumbar traction.
To evaluate the efficacy of continuous lumbar traction using real-time MRI.

Main Methods:

Prospective study involving 48 patients with lumbar disk herniation.
Continuous lumbar traction applied using a nonmagnetic device (30 kg).
Real-time MRI performed before and during 30 minutes of traction, analyzing sagittal and axial images for qualitative and quantitative changes.

Main Results:

Traction induced changes in disk shape, intervertebral disk opening, and reduced herniated disk volume.
Separation of the disk and nerve root, and widening of the facet joint were observed.
Significant increases in lumbar vertebral column length (1.45%) and disk reduction ratio (up to 17.94%) were noted with traction duration.

Conclusions:

Real-time MRI effectively visualizes the immediate effects of continuous lumbar traction on herniated lumbar intervertebral disks.
The study demonstrates the morphologic changes and quantitative benefits of traction therapy in real-time.