Development and Validation of a Mobile Phone Application for Measuring Knee Range of Motion.

Our study found that a mobile application for evaluating knee ROM was non-inferior to goniometer-based measurements performed by an arthroplasty-trained surgeon. Future studies will investigate this application's utility in 1) remote patient care, 2) accelerating recovery during rehabilitation, 3) detecting early postoperative complications including arthrofibrosis, and 4) adding additional functionalities to the application to provide more detail-oriented descriptive analyses of patient knee function.