 The primary goal of this research is to understand the usability and reliability of the system. Since the present application is relatively novel, there are no standard mthods to success or failure of the system. Therefore, we do not intend to perform any inferential statistical analyses. Rather, we will generate descriptive statistics to be used in a post-hoc fashion to determine system reliability, and usability for future applications to sick patients undergoing physical therapy for post-ACL reconstruction surgery. Descriptive statistics provide better insight into the data allowing a more informed assessment of potential risks of the system. Understanding the distributional nature of the data e.g., normal symmetric, normal skewed, bimodal, etc. and the variability of the data scores can better identify overall safety risks as well as help to specify individuals that could potentially incur a greater safety risk, should one exist. 