Fig. 3

a Reduction value of the Med and Lat of the cortex. *Med and *Lat indicate statistical significance at each resection level. Significant differences between the Med and Lat were observed, except at the 20 mm level. n.s., not significant; Med, most medial point; Lat, most lateral point. b Reduction value of the QMA, CA, and QLA. The reduction value of the QMA significantly increased with more distal resection, whereas that in the QLA significantly decreased, indicating that the QLA was not tapering. *QMA and *QLA indicate statistical significance at each resection level. n.s., not significant; QMA, quarter-medial-anterior point; CA, central-anterior point; QLA, quarter-lateral-anterior point. c Reduction value of the QMP, CP, and QLP. *QMP, *CP, and *QLP indicate statistical significance at each resection level. Significant differences were found between the QMP and QLP, except at the 20 mm level; n.s., not significant; QMP, quarter-medial-posterior point; CP, central-posterior point; QLP, quarter-lateral-posterior point