Hypertonia Assessment Tool (HAT)

The Hypertonia Assessment Tool (HAT) is a research and clinical guide for grading the severity of hypertonia in the paediatric population.  The HAT is used in research setting to improve the ability of researchers and clinicians to interpret study results. Clinically, it is a discriminative measure that helps clinicians manage the specific type(s) of hypertonia and improve treatment outcomes.  

Developed by Dr. Darcy Fehlings and her team in the Cerebral Palsy Discovery Lab in the Bloorview Research Institute, the HAT is a seven-item tool that has been developed for children and youth between the ages of four to 19 years.