How is the WEST ™ different from other evaluation methods?
Several evaluation methods are currently available. Computer controlled devices costing thousands of dollars may offer automated data handling. However, no device provides better assessment of tactile sensation. In fact, the expensive devices may be more cumbersome to use in practice since a computer restricts portability. Pulse measures only determine general circulation and cannot determine site specific vascular insufficiencies. The validity and reliability of vibration tests are affected by extraneous factors, including application force and composition of underlying substrates. Similarly, the validity and reliability of two-point discrimination tests are compromised by the inconsistency inherent in the method of application. Cheap “screening” filaments can suffer from inaccuracy due to lack of calibration. Additionally, simple single filament screeners cannot be used to grade or track pathologies. They only can be used to determine if “something is wrong.” “Improvised” techniques
