What is compression of the ventral dural sac?
Flattening of the Dural sac is something that can be observed in patients who suffer from muscular atrophy of distal upper extremities. This means the Dural sac that encloses the spine is restricted and could cause many different things.
to touch the spine
The dural sac covers the spine. Typical causes of dural sac impingement typically include bulging discs, herniated discs, or osteophytes. These conditions can also affect the spinal cord.
S3
A small disc protrusion at the C5-6 vertebrae means that the disc between these two vertebrae is slightly bulging. This protrusion is causing mild compression on the dural sac, which is the protective covering around the spinal cord and nerve roots. It may lead to symptoms like neck pain, arm pain, or numbness related to the affected nerve roots.
dural folds
The space created when the dural layers separate is called a dural venous sinus. These sinuses are responsible for draining blood and cerebrospinal fluid from the brain and are located between the layers of the dura mater.
There are two pairs of dentate ligaments in the human body, one pair for each hemisphere of the brain. These ligaments stabilize the spinal cord within the dural sac and prevent excessive movement.
An L4-5 central disc herniation refers to a condition where the intervertebral disc between the fourth and fifth lumbar vertebrae protrudes into the spinal canal, potentially compressing nearby structures. A "mild ventral impression on the fecal sac" indicates that this herniation is creating a slight indentation on the dural sac, which contains the spinal cord and nerve roots, but the compression is not severe. This condition may cause symptoms such as lower back pain, leg pain, or numbness, depending on the extent of nerve involvement. Treatment options can include physical therapy, medications, or in some cases, surgical intervention if symptoms persist.
Sub dural or extra dural haematoma
The main function of the dura mater (as with the arachnoid and pia mater) is to protect, surround, and support the spinal cord. It also forms the dural sac which extends from the foramen magnum all the way down to the coccyx. Inside this formed sac is where you'll find the arachnoid mater, subarachnoid space, pia mater, and the spinal cord/nerves/roots.
When a disc indents the anterior thecal sac in the spine, it can cause compression of the spinal cord or nerve roots, leading to symptoms such as pain, weakness, and numbness in the affected area. This compression can result in conditions like disc herniation or spinal stenosis, which may require medical intervention to relieve the pressure on the nerves.