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Thecal sac. The dura mater and arachnoid mater are collectively called the dural sac or the thecal sac. This sac covers the conus medullaris, cauda equina, and each individual spinal nerve root as it courses out of the cauda equina and travels into the intervertebral foramen (bony opening through which the nerve exits the spinal canal). 2 Darby ...
Relieve neural tissue compression. Stenosis of the spinal canal in the lumbar region may cause compression of the spinal cord, thecal sac, spinal dura, and/or the cauda equina. When one or more of these structures are compressed, neurogenic claudication (leg pain while walking or bending the spine backward) may occur, typically affecting both legs.
The L5-S1 spinal motion segment, also called the lumbosacral joint, is the transition region between the lumbar spine and sacral spine in the lower back. In this region, the curvature of the spine changes from lumbar lordosis (forward curve) to sacral kyphosis (backward curve). L5-S1 helps transfer loads from the spine into the pelvis and legs.
C7-T1 intervertebral disc. A disc made of a thick fibrous ring (annulus fibrosus) that surrounds an inner gel-like material (nucleus pulposus) is situated between the C7 and T1 vertebrae. This disc protects the vertebrae by providing cushioning and shock-absorbing functions during neck movements. C8 spinal nerve.
The C7 nerve provides muscle control and sensation to parts of the shoulder, arm, and hand. The C7 spinal nerve exits through the intervertebral foramen between the C6 and C7 vertebrae. This nerve has a sensory root and a motor root. The C7 dermatome is an area of skin that receives sensations through the C7 nerve.
Spinal stenosis is a general term for the narrowing of one or more foramina (bony openings) within the spine. There are specific names for spinal stenosis depending on the exact location (s) of where the narrowing and nerve compression occurs. The two general types of spinal stenosis are foraminal stenosis, also called lateral stenosis, which ...
L5-S1 Treatment. Conditions affecting the L5-S1 spinal motion segment are usually treated with nonsurgical methods. If the lower back and/or leg symptoms worsen or do not improve despite these treatments, or in case of certain medical emergencies, such as tumors or cauda equina syndrome, surgery may be recommended.
Spinal nerve pain from C7 may be treated with steroid injections in the epidural space, around the C7 nerve itself, or injections into the facet joint of the C6 and C7 vertebrae. Risks of these injection procedures include hematoma, bleeding, and nerve damage. Fluoroscopic (x-ray) guidance with radiopaque contrast dye is usually used for ...
Compression of the cauda equina in the lumbar spine; Spinal cord compression in the neck may cause bending or twisting of blood vessels that supply the spinal cord and the brain. 1 Meyer F, Börm W, Thomé C. Degenerative cervical spinal stenosis: current strategies in diagnosis and treatment. Dtsch Arztebl Int. 2008;105(20):366–372. doi:10. ...
Less Common Signs and Symptoms of Cervical Herniated Disc. Loss of bowel and bladder control is a rare symptom of cervical herniated disc. If the spinal cord becomes compressed or inflamed by a cervical herniated disc, signs and symptoms may include: Pain, tingling, numbness, and/or weakness in both arms and/or both legs.