A trial implant for detecting impingement or dislocation intraoperatively during a range of motion test can include a trial head of a ball and socket joint replacement prosthesis. The ball and socket joint replacement prosthesis can be configured to attach to a stem component and engage with a socket portion of the ball and socket joint replacement prosthesis. A sensor can be embedded within the trial head and configured to generate a signal indicative of a distance between the trial head and the socket portion. The sensor can include an inductive coil to detect the distance and generate the signal indicative of the distance.