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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.
C6 spinal nerve. In between C5-C6, the C6 spinal nerve exits the spinal cord through a small bony opening on the left and right sides of the spinal canal called the intervertebral foramen. This C6 nerve has a sensory root and a motor root. The C6 dermatome is an area of skin that receives sensations through the C6 nerve.
Peer-Reviewed. The L3-L4 spinal motion segment, positioned in the middle of the lumbar spine, plays an important role in supporting the weight of the torso and protecting the cauda equina (nerves that descend from the spinal cord). While the L3-L4 motion segment is less likely to be injured compared to its lower counterparts, it may be subject ...
Show Transcript. The C7 T1 spinal motion segment, also called the cervicothoracic junction, is located where the cervical spine and thoracic spine connect. It consists of the C7 and T1 vertebrae, and the anatomical structures connecting them. This segment provides minimal flexibility, supports the neck and head above, and protects the spinal ...
The thoracic spine has 12 nerve roots (T1 to T12) on each side of the spine that branch from the spinal cord and control motor and sensory signals mostly for the upper back, chest, and abdomen. The thoracic spine (highlighted) spans the upper and mid-back. It includes twelve vertebrae named T1 through T12. Each thoracic spinal nerve is named ...
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.
6. 7. Dr. David DeWitt is an orthopedic surgeon practicing at the NeuroSpine Center of Wisconsin, where he specializes in spine surgery. He has more than 15 years of experience evaluating and treating spine diseases and trauma. Symptoms of a thoracic disc herniation include upper back pain, radiating discomfort, numbness, and weakness.
The spinal cord can be divided into segments according to the nerve roots that branch off from it. There are a total of: 8 cervical spinal nerves. 12 thoracic spinal nerves. 5 lumbar spinal nerves. 5 sacral spinal nerves. 1 coccygeal spinal nerve. For most spinal segments, the nerve roots run through the bony canal, and at each level a pair of ...
Metastatic Spinal Tumor Symptoms. The symptoms and signs of metastatic spinal tumors typically include back or neck pain, depending on the location within the spine. Neurological deficits, such as weakness, tingling or numbness in the arms or legs may also develop. These neurological deficits tend to occur several weeks or months following the ...
Treatment for spinal tumors aims to restore neurological functions, like bowel and bladder control. Most metastatic spinal tumors develop within a vertebra and weaken the bone over time. If a vertebra fractures, the spine becomes unstable, which could lead to more pain and possibly compress the spinal cord or a spinal nerve.