Humidity, contact with moisture, and stamps sticking to old album pages and then removed are common examples of disturbed gum. Once again, the amount of original gum left (most refer to +/- 50% of the original gum) on the stamp is a distinction that's made amongst some dealers and collectors.
Description of sciatica. Sciatica describes a collection of symptoms that can arise with sciatic nerve compression. This nerve is the largest and longest in the body, running from the base of the spine and down through both legs. Sciatic nerve compression can lead to pain that begins in the lower back and moves through the buttocks, legs and feet.
They form the region of the spinal column inferior to the cervical vertebrae of the neck and superior to the lumbar vertebrae of the lower back.... Click to read more below. The thoracic vertebrae are a group of twelve small bones that form the vertebral spine in the upper trunk.Thoracic vertebrae are unique among the bones of the spine in that they are the only vertebrae that support ribs and have overlapping spinous processes.he thoracic vertebrae are a group of twelve small bones that form the vertebral spine in the upper trunk. Thoracic vertebrae are unique among the bones of the spine in that they are the only vertebrae that support ribs and have overlapping spinous processes.