A torque measurement system for measuring a torque acting on a rotatable shaft is provided. The torque measurement system includes a first housing portion having a first end adapted to be fixedly coupled to the rotatable shaft and a second end. The torque measurement system includes a second housing portion having a first end spaced apart from the second end of the first housing portion so as to define a gap between the first housing portion and the second housing portion. The second housing portion is adapted to be fixedly coupled to the rotatable shaft. The torque measurement system includes at least one sensor that observes at least one of the second end of the first housing portion, the first end of the second housing portion and the gap and generates sensor signals based on the observation. The sensor signals are indicative of a torque acting on the rotatable shaft.