selkäydinkapselin

Selkäydinkapseli refers to the dura mater, the outermost of the three meninges, which are protective membranes that surround the brain and spinal cord. In the context of the spinal cord, the dura mater forms a tough, fibrous sac that encloses the spinal cord and the cerebrospinal fluid. This sac is often referred to as the dural sac or the spinal dural sheath. It plays a crucial role in protecting the delicate neural tissues within from mechanical injury and providing a contained environment for the cerebrospinal fluid.

The dura mater is a strong, inelastic membrane composed of dense irregular connective tissue. It is anchored to the skull at the base of the brain and extends downwards to the sacrum. The subarachnoid space, containing cerebrospinal fluid, lies between the arachnoid mater and the pia mater, and is within the dural sac. This fluid acts as a shock absorber, further protecting the spinal cord.

Conditions affecting the selkäydinkapseli can include inflammation (arachnoiditis), which can lead to scarring and adhesions, potentially causing nerve compression and pain. Trauma can also damage the dura, leading to cerebrospinal fluid leaks. Surgical procedures involving the spinal cord often require careful manipulation and closure of the dura to prevent complications.