Table 2.

Calculated thickness of the infraglenoid tubercle on the scapular ridge

Prosthesis size (mm)	Distance to glenoid midpoint (mm)	Depth to scapular ridge (mm) (calculated*)	Depth to infraglenoid tubercle** (mm)	Thickness of infraglenoid tubercle on the crista (mm)
36	18	13.3	9.1	4.2
38	19	14.7	11.7	3
40	20	16.2	13.9	2.2
42	21	17.6	16.1	1.5

* Depth calculated using the mathematical formula describing the margo lateralis in the scapular plane relative to the glenoid plane: y = 1.43 ×  –12.45; ** depth measured relative to the glenoid plane.