Microsurgical lumbar laminoplasty

Microsurgical lumbar laminoplasty is a minimally invasive technique for decompressing pinched nerves in the lumbar spine. Pinched or compressed nerves may result from herniated discs, lumbar spinal stenosis, or spondylolisthesis.

Source: Wikipedia — Microsurgical lumbar laminoplasty (CC BY-SA 4.0)