How is Simplified Motor Score (SMS) fused to determine severity in traumatic brain injury (TBI)?

Updated: Mar 02, 2020
  • Author: Percival H Pangilinan, Jr, MD; Chief Editor: Stephen Kishner, MD, MHA  more...
  • Print


Another system for assessing TBI severity is the Simplified Motor Score (SMS). The SMS is a 3-point scale developed to address the perceived limitations of the GCS, such as its complexity and poor interrater reliability.

Table 3. Simplified Motor Score (Open Table in a new window)


Best Motor Response


Withdraws to pain or worse


Localizes pain


Obeys commands


A study by Thompson et al determined that in an out-of-hospital setting, the SMS was similar to the GCS score for predicting TBI outcomes. [26]

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!