Abstract: An apparatus for measuring the strength of and for performing physical therapy exercises to strengthen a patient's limb. The device includes a pair of pivot clamps each having a end for connecting the pivot clamps to a solid object such as a physical therapy table or hospital bed. A second end of each pivot clamp adjustably receives a first frame member of a conventional traction or load frame. This arrangement enables rotational and translational movement of the first frame member retained by the pivot clamp relative to each pivot clamp to allow the frame to be positioned in a desired location and orientation relative to the patient's limb to be tested. A second frame member is adjustably connected to the pair of first frame members by a pair of adjustable brackets. A limb engaging member having a force transducer located therein is used to both engage the patient's limb to be tested and to detect a force transmitted between the limb of a patient and the limb engaging member.