An apparatus (10) for assessing the functional dysmetria of the lower limbs, which comprises: - a supporting structure (11) with two movable platforms (13), which are mutually independent and can yield vertically under load, at least one block (14) made of elastically yielding material being arranged below each one of the platforms, - complementary means (31), which cooperate with the platforms (13), for the vertical arrangement, with respect to the foot-resting central line, of the sacrolumbar line of the patient, - means (16) for measuring dysmetria, - means (30) for measuring the differences in subcalcaneal load, - means (26) for locking and releasing the platforms (13), - means (23) for extracting the blocks (14) from the supporting structure (11).
