annular bulging L4, L5

OBJECTIVE: The objective of this study was to show that degenerative lumbar magnetic resonance imaging findings variably increase discography pain by level. METHODS: Lumbar discography and magnetic resonance imaging of 736 patients were retrospectively reviewed. Univariate/multivariate logistic regressions calculated the odds ratio (OR) (95% confidence interval, P < 0.05). RESULTS: L3-4 multivariate regression OR for a degenerative disc is 9...

OBJECTIVE: The purpose of this retrospective case report was to describe chiropractic management of a patient with failed back surgery syndrome. CLINICAL FEATURES: A 45-year-old woman presented 2 years after L4-L5 and L5-S1 fusion surgery with low back and sciatic pain. Her physical exam included a positive straight leg raise and diminished lower-extremity reflexes and muscle strength. The patient's magnetic resonance imaging showed right disc bulging and annular tearing at L2-L3 and L3-L4 disc bulging with foraminal impingement...

INTRODUCTION: We present a case series of six cases of intradural disc herniation at L4-L5 level diagnosed on the basis of intraoperative findings. RESULT: All our cases, on preoperative magnetic resonance imaging (MRI) were reported as having diffuse annular bulge with large posterocentral extrusion. Our study comprised patients in age group of 30-60 years. Four cases out of six presented with cauda equina syndrome. In three cases, cauda equina was associated with sudden deterioration in the power of lower limb muscle groups...

Intervertebral disc degeneration involves changes in its material properties that affect the mechanical functions of the spinal system. However, the alteration of the biomechanics of a spinal segment through specific material degradation in a specific region is poorly understood. In this study, the influence of the constitutive material degeneration of disc tissues on the mechanics of a lower lumbar spinal unit was examined using a three-dimensional nonlinear finite element model of the L4-L5 functional spinal unit...

INTRODUCTION: Lower back pain secondary to degenerative disc disease is a condition that affects young to middle-aged persons with peak incidence at approximately 40 y. MRI is the standard imaging modality for detecting disc pathology due to its advantage of lack of radiation, multiplanar imaging capability, excellent spinal soft-tissue contrast and precise localization of intervertebral discs changes. AIMS AND OBJECTIVE: To evaluate the characterization, extent, and changes associated with the degenerative lumbar disc disease by Magnetic Resonance Imaging...

OBJECTIVE: Asymptomatic patients show high degeneration prevalence at lumbar disc in previous literatures. Unfortunately, there are few Korean data, so the authors attempted to analyze the prevalence of disc degeneration in highly selective asymptomatic Korean subjects using MRI. METHODS: We performed 3 T MRI sagittal scans from T12 to S1 on 102 asymptomatic subjects (50 men and 52 women) who visited our hospital between the ages of 14 and 82 years (mean age 46...

BACKGROUND CONTEXT: Discectomy is a common procedure for treating sciatica. However, both the operation and preceding herniated disc alter the biomechanical properties of the spinal segment. The disc mechanics are also altered in patients with chronic contained herniation. The biomechanical properties of the disc can potentially be restored with an elastomeric nucleus replacement implanted via minimally invasive surgery. PURPOSE: The purpose of this study was to determine whether the compressive characteristics of the intervertebral disc after a nucleotomy can be restored with an elastomeric nucleus replacement...

Objective: To discuss a case of leptomenigeal disease mimicking a lower lumbar disc lesion and accompanying neurological deficit.Clinical Features: A 62 year old male presented with a 3-4 day history of left low back and left posterior thigh pain. The patient had a previous history of non-specific low back pain for approximately 10-25 years, which was relieved in the past by manual therapy. He was also currently being treated by a medical oncologist with chemotherapy for low grade non-Hodgkin's lymphoma, which was considered stable...

BACKGROUND: The hypothesis that injecting bone cement adjacent to one or both endplates would bring about degeneration in the intervening disc was tested. METHODS: In 11 dogs, bone cement was injected just below the superior endplates of L1, L2, and L3 to block the nutritional supply through these endplates to the three intervertebral discs T13-L1, L1-L2, and L2-L3. In one other dog, both the superior and the inferior endplates of the same discs (T13-L1, L1-L2, and L2-L3) were blocked with bone cement...