2000).The majority of herniated discs occur in a posterolateral direction, compressing the ipsilateral nerve root as it exits from the dural sac. Thus, a left L5-S1 disc herniation compresses the ...

The lumbosacral plexus is formed by the ventral branches of the second to fifth lumbar nerves. The lower division of the fourth lumbar nerve joins ... and lower limbs. Compression of the plexus ...

Participants in the latest randomized trial had been required to have, among other criteria: Contained posterolateral LDH at either L4-5 or L5-S1 (or ... of the nerve root compression.