An orthopaedic surgical instrument (50) for transferring a centre location of a patient's tibia to the patient's talus during a total ankle arthroplasty procedure includes first (52) and second (54) pivotally connected levers. An upper handle (58) is secured to a proximal end of the first lever and a lower handle (62) is secured to a proximal end of the second lever. A tibial trial component (60) is secured to a distal end of the first lever, and an indenting spike (64) secured to a distal end of the second lever.