Abstract: A knee joint flexure progression meter and system. The knee joint flexure meter has an elongated progression meter bar with a major axis, an upper surface, a lower surface having a longitudinal recess therein, and a plurality of spaced apart indicia disposed on the upper surface thereof. A crossbar is disposed perpendicularly to the progression meter bar major axis. The crossbar is both adjustable and removable with respect to the progression meter bar. The crossbar is dimensioned smaller than the recess in the progression meter bar, so that the crossbar can be contained within the recess. A mechanism is provided for containing the crossbar within the progression meter bar for transportation or temporary storage.