A knee range of motion device utilizing tangential joint translation and distraction is disclosed. The device includes a carriage connected to a base, the carriage having a base attachment section； a thigh support section pivotally attached to the base attachment section； and a lower leg support section pivotally connected to the thigh support section. The device further including a carriage support extending between the thigh support section and the base, the carriage support pivotally connected to the thigh support section and adapted to slide in slots on the base； a first actuator connected to the lower leg support section to extend and retract the lower leg support section, thereby causing a foot support connected to the lower leg section to move； and a second actuator connected to the lower leg support section to raise and lower a calf support, causing an anterior and posterior tibial translation.
