Because tactile sensation reflects neural integrity and vascular insufficiency, pathologies can be detected and graded with the WEST . Five calibrated nylon filaments deliver specified forces to the skin. The primary reason for routinely conducting quantitative sensory testing is to reduce risk .
Neuropathic tissue is at risk for ulceration.
Patients with certain diseases, such as diabetes, are at high risk for lower extremity amputation because the disease compromises sensory capabilities. It is estimated that most of the 54,000 cases of lower extremity amputation each year could be prevented with routine quantitative sensory testing. As part of a routine examination, all patients at risk should be subjected to sensory screening. Dr. C. Everett Koop recommended the WEST to the World Health Organization in his May 1995 letter. He cited the WEST's calibration , reduced fragility , and less painful and more consistent stimulation as improvements over prior methods.