Vertiflex is a minimally invasive procedure used to treat lumbar spinal stenosis, a condition characterized by narrowing of the spinal canal in the lower back, leading to compression of spinal nerves and associated symptoms such as pain, numbness, or weakness in the legs. The Vertiflex procedure involves the implantation of a small spacer device between the spinous processes of the affected vertebrae to decompress the spinal canal and relieve symptoms.