 This paper presents a new method for measuring knee kinematics using a wearable sensor embedded within a 3D printed knee brace. The sensor was found to be highly accurate when compared to a reference optoelectronic measurement system with an average Pearson's or value of 0.89 across all participants. This suggests that this type of wearable sensor could be used to accurately measure knee kinematics in clinical settings. This article was authored by Cormac D. Fay, Nicholas Manoring, Ali Jarana-Kamenna, and others.