ANATOMY The spinal cord tapers to its end, the conus medullaris, usually at the lower edge of the first lumbar vertebra. The continuation of the spinal cord is a strand of connective tissue, the filum terminale. The ventral and dorsal lumbar and sacral nerve roots that arise from the conus medullaris form a bundle, the cauda equina (Figure 1). These lumbar and sacral spinal nerve roots separate...

The purpose of this study was to investigate and determine whether there are differences in L5 pedicles morphology between isthmic degenerative L5–S1 spondylolisthesis. One hundred nineteen patients with spondylolisthesis 45 at were enrolled the IS group DS group, respectively, 164 lumbar disc herniation without spondylolysis or classified into normal (NL) group. A series pedicle parameters fif...

Paravertebral abscesses are usually caused by Staphylococcus aureus, and often affect older people with diabetes mellitus or immunosuppression. We report a huge lumbar abscess caused by Escherichia coli in an 81-year-old woman with diabetes and melanoma metastasis. Lumbar vertebra and surrounding soft tissues were involved by the Gram-negative infection, and imaging features were indicative of ...

The authors report an unusual case of a fat embolism following an isolated lumbar vertebra wedge fracture. A 66-year-old gentleman sustained a lumbar wedge fracture following a fall. During routine mobilisation some days later he collapsed suddenly and became unresponsive. Shortly after, he suffered a fatal cardiac arrest. A post-mortem was performed which attributed the cause of death to fat e...

Identification of the lumbosacral (L-S) segment on magnetic resonance (MR) images is important for appropriate treatment of disease in the lumbosacral (L-S) area. In the study, data obtained from plain A-P radiographs of the L-S spine and sagittal MR imaging scans (sagittal T1- and T2-weighted sequences) of the L-S spine and sacrum with the coccygeal bone, are analyzed. Twenty-six children aged...

Structural vibration testing might be a promising method to study the mechanical properties of spinal motion segments as an alternative to imaging and spinal manipulation techniques. Structural vibration testing is a non-destructive measurement technique that measures the response of a system to an applied vibration as a function of frequency, and allows determination of modal parameters such a...

BACKGROUND The aim of this study was to compare the biomechanical characteristics between bilateral and unilateral lumbo-iliac fixation in unilateral comminuted sacral fractures (USF) by finite element analysis. METHODS A 3-dimensional finite element model of unilateral sacral fractures was simulated. Three kinds of implants were instrumented into the model, including the unilateral lumbopelv...

Knowledge of vertebra location, shape, and orientation is crucial in many medical applications such as orthopedics or interventional procedures. Computed tomography (CT) offers a high contrast between bone and soft tissues, but automatic vertebra segmentation remains difficult. Hence, the wide range of shapes, aging, and degenerative joint disease alterations as well as the variety of pathologi...

OBJECTIVES This article reviews the prevalence of lumbarisation, sacralisation and lumbar ribs, and their morphological relevance by evaluating multi-slice computed tomography (MSCT) images. These segment variations can cause miscounting of vertebrae at the lumbar spinal level. METHODS A retrospective radiographic analysis of 226 cases scanned by MSCT prior to forensic autopsy was undertaken....