A surgical instrument for use in placement of orthopedic implants relative to a bone of a patient, comprising: an instrument body having a first cannulated passage extending continuously through the instrument body along a working axis of the instrument , the first cannulated passage being sized to receive and extend about at least a portion of an orthopedic implant within the cannulated passage ; a chuck engageable with the orthopedic implant to selectively engage the orthopedic implant to restrict axial movement of the orthopedic implant relative to the chuck along the working axis in the absence of an external force being applied to the chuck , wherein the chuck comprises a second cannulated passage axially aligned along the working axis , wherein the chuck comprises a plurality of spherical jaw members that are engaged by a cam surface comprising a helical surface and are normally biased into engagement with the plurality of spherical jaw members to dispose the spherical jaw members toward the working axis such that at least a portion of each of the spherical jaw members at least partially extends into the second cannulated passage to engage the orthopedic implant ; a drive engaged with the chuck to impart rotational motion of the chuck about the working axis , wherein the rotational motion of the chuck relative to the orthopedic implant urges the plurality of spherical jaw members of the chuck into engagement with the orthopedic implant ; and a measurement system having a displacement sensing arm moveable in a direction parallel to the working axis to measure advancement of the orthopedic implant driven by the instrument into the bone of the patient along the working axis . an instrument body having a first cannulated passage extending continuously through the instrument body along a working axis of the instrument , the first cannulated passage being sized to receive and extend about at least a portion of an orthopedic implant within the cannulated passage ; a chuck engageable with the orthopedic implant to selectively engage the orthopedic implant to restrict axial movement of the orthopedic implant relative to the chuck along the working axis in the absence of an external force being applied to the chuck , wherein the chuck comprises a second cannulated passage axially aligned along the working axis , wherein the chuck comprises a plurality of spherical jaw members that are engaged by a cam surface comprising a helical surface and are normally biased into engagement with the plurality of spherical jaw members to dispose the spherical jaw members toward the working axis such that at least a portion of each of the spherical jaw members at least partially extends into the second cannulated passage to engage the orthopedic implant ; a drive engaged with the chuck to impart rotational motion of the chuck about the working axis , wherein the rotational motion of the chuck relative to the orthopedic implant urges the plurality of spherical jaw members of the chuck into engagement with the orthopedic implant ; and a measurement system having a displacement sensing arm moveable in a direction parallel to the working axis to measure advancement of the orthopedic implant driven by the instrument into the bone of the patient along the working axis . <EOS>