Lumbar Muscular Pain Research Paper

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Lumbar Radicular Pain Amaresh Vydyanathan, M.D. Erik Romanelli, M.D., M.P.H.
Anatomy There are five moveable lumbar vertebrae which are connected by paired facet joints located between the articular processes of the pedicles and by the anterior and posterior longitudinal ligaments. Intervertebral foramina are formed by notches in the articular processes of adjacent pedicles of two vertebrae; the disk is anterior and medial to the foramen. Nerve roots of L1-L5 descend from the conus medullaris (termination of the adult spinal cord, typically located between T10 and L1 vertebral levels) and exit at the neural foramina of their respective level. …show more content…

Radiculopathy can, in actuality, exist without pain—it is more so defined by objective neurologic signs such as loss of sensation and/or motor activity (due to conduction block), weakness, muscle wasting, and loss of reflexes. Similarly, radicular pain can exist in and of itself. Physiologically, radicular pain is typically evoked by ectopic discharges that arise from the dorsal nerve root or its ganglion, and distributes painful sensations along the length of its axon. Etiologies of radicular pain typically involve either compression or irritation of spinal nerve roots, which could be due to numerous causes including disc herniation, formation of osteophytes, degenerative lumbar spondylosis, scar tissue from a previous spinal surgery, foraminal stenosis, thickening of adjacent ligaments, neoplasms, inflammatory conditions (i.e. ankylosing spondylitis, Paget’s disease), and infectious disorders (herpes zoster, Lyme, spinal epidural …show more content…

Immediate MRI should generally be reserved for patients in whom neurologic deficits are progressing, cauda equine is suspected, or there is clinical suspicion of malignancy, infection or inflammatory disorders. Otherwise, three to six weeks of conservative therapy can be implemented and if this fails to control radicular pain or if there is onset or further progression of neurologic symptoms, further diagnostic testing with MRI can be utilized (especially if surgical intervention is contemplated). MRI is highly accurate for identifying abnormalities which may otherwise put the patient at risk for developing lumbar radicular pain, particularly disk herniation. If MRI is contraindicated (i.e. if patient has pacemaker or spinal cord stimulator), a CT myelogram may be appropriate. Patients with normal MRI findings who have persistent unexplained leg pain may benefit from electromyography (EMG). EMG is performed in combination with nerve conduction studies (NMS) to help localize symptoms to specific nerve root levels, measure severity of radiculopathic disease, and additionally rule out alternative diagnoses such as neuropathy or

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