Disk hernia

What does it mean the following diagnosis:

L4-L5 level: dorsal right-side foramen protrusion of intervertebral disk protruding into the opening of the spinal canal up to 2-3 mm and deforming the opening.

L5-S1 level: dorsal right-side paramedian disk hernia (extension up to 8 mm) protruding into the opening of the spinal canal up to 6mm and compressing dural funnel of S1 right nerve-root.

[dr_simran]

Hello Dear,
The spinal disc is a soft cushion that sits between each vertabrae of the spine. This spinal disc becomes more rigid with age and trauma. In a young individual, the disc is soft and elastic, but like so many other structures in the body, the disc gradually looses its elasticity and is more vulnerable to injury.
As the spinal disc becomes less elastic, it can rupture. When the disc ruptures, a portion of the spinal disc pushes outside its normal boundary--this is called a herniated disc or disc protrusion. When a herniated disc bulges out from between the vertebrae, the spinal nerves and spinal cord can become pinched. There is normally a little extra space around the spinal cord and spinal nerves, but if enough of the herniated disc is pushed out of place, then these structures may be compressed.
In your case there is bulging seen at L4-5, L5-S1 narrowing the spinal canal or neural foramina and causing S1compression..
Refer http://www.spine-surgery.com/327_359.htm#FAQ5  for more info.
Best