OBJECTIVES The job of firefighting can cause lumbar burden and low back pain. This study aimed to identify the association between age and lumbar intervertebral disc degeneration and whether the association differs between field and administrative (non-field) firefighters. METHODS Subjects were selected using a stratified random sampling method. Firefighters were stratified by geographic area...

We describe the natural history of 13 musculoskeletal conditions requiring hospitalization and identify demographic, behavioral, psychosocial, occupational, and clinical characteristics most strongly associated with disability discharge from the Army. Subjects included 15,268 active-duty personnel hospitalized for a common musculoskeletal condition between the years 1989-1996 who were retrospec...

A herniated intervertebral disc is the most common type of soft tissue mass lesion within the lumbar spinal canal. Magnetic resonance imaging (MRI) is a useful tool for the assessment of patients with lower back pain and radiating pain, especially intervertebral disc herniation. MRI findings of intervertebral disc herniation are typical. However, from time to time, despite an apparently classic...

Study objective — To evaluate how morphological features of intervertebral disc would affect the outcomes finite element modeling axial load in cervical spine, C3-C5, order to predict risk occurrence and course dorsopathies. Material Methods Three-dimensional models spine vertebrae were generated from computed tomography data a volunteer (24 years old male without detected pathology his neck). ...

AIM To compare two anthropometrical methods for measuring the intervertebral disc size with computer tomography measurements and to develop a new anthropometric method for calculating intervertebral disc area. METHODS Intervertebral disc size was measured using computer tomography and two anthropometric methods (Colombini and modified Colombini) in a sample of 40 subjects. The new calculation...

Background: A large proportion of patients presenting with lumbar disc disease are opium addicts in our region. It was, therefore, hypothesized that morphine might affect the intervertebral disc. We investigated the histological findings of morphine dependency on intervertebral discs in rat. Methods: Forty NMRI adult male rats (230-250 g) placed on ordinary diet and received aqueous solution of...

BACKGROUND Cervical disc arthroplasty is being used as an alternative degenerative disc disease treatment with fusion of the cervical spine in order to preserve motion. However, whether replacement arthoplasty in the spine achieves its primary patient centered objective of lowering the frequency of adjacent segment degeneration is not verified yet. METHODOLOGY We conducted a meta-analysis acc...

The three-dimensional structure of the central region of the Z disk of honeybee flight muscle has been determined to a resolution of 70 A by three-dimensional reconstruction from electron micrographs of tilted thin sections. The reconstructions show a complex assembly in which actin filaments terminate and are cross-linked together; a number of structural domains of this network are resolved in...

INTRODUCTION: Bulging of the intervertebral discs during normal motion of the spine has been proposed as a potential cause of pain through either compression of the spinal cord or impingement of exiting neural elements. Although past studies have characterized both normal and stenotic dimensions of the spinal canal and intervertebral foramen, no previous study has described the amount of disc o...

Degenerative disease of the lumbar spine refers to a syndrome in which an intervertebral disc with adjacent spine structures is compromised, this can be due to aging process associated with pathology. Thirty five percent of asymptomatic individuals may have degenerative spine findings, including: disc degeneration, modic changes, disc bulges, facet joint arthropathy and spinal stenosis. Plain r...