Fig. 1From: Is global humeral head offset related to intramedullary canal width? A computer tomography morphometric studyDetermination of the humeral head center coordinates by digitizing 3 series of 8 points on the head surface (‘sphere of best fit’ method), and determination of the intra-medullary canal axis and width by digitizing 4 series of 8 points on transverse sections 65, 70, 100 and 105 mm below the head center (‘cylinder of best fit’ method)Back to article page