Advanced Trial Spacers, Height Measuring Tool, and Inserter and Extractor Handle

A height measuring tool for measuring a distance between a proximal humeral resection of a humerus and a center of a glenoid, the tool comprising:

• an elongate scale extending along an axis, the scale having a distal end configured to be positioned relative to the proximal humeral resection, the scale having a non-circular transverse cross-section and including indicia corresponding to distances along an axial extent of the scale;
• a pointer having a leading end configured to be positioned at the center of the glenoid;
• and
• an indicator member carrying the pointer and including an aperture that receives the scale therethrough, the aperture having a shape corresponding to the non-circular transverse cross-section of the scale such that the indicator member is translatable along the axial extent of the scale and is rotationally constrained relative to the scale.

A height measuring tool for measuring a distance between a proximal humeral resection of a humerus and a center of a glenoid, the tool comprising:

• an elongate housing extending along an axis, the housing having a distal end configured to be positioned relative to the proximal humeral resection, the housing including indicia corresponding to distances along an axial extent of the housing;
• a coupling element coupled to the housing and configured to translate along the axial extent of the housing to a selected axial position and to maintain the selected axial position;
• and
• a pointer carried by the coupling element and having a leading end configured to be positioned at the center of the glenoid, the pointer being translatable relative to the coupling element along a direction transverse to the axis, the coupling element including a resilient retention feature configured to frictionally maintain the pointer in a position relative to the coupling element in the absence of a force applied to the pointer.