Fig. 1

Cadaveric dissection of the medial knee showing the main arteries (1a). In this specimen, the SA originates from the distal DGA. The DSPS was measured in each specimen (1b). DGA, descending genicular artery; SB, skin branch; OB, osteoarticular branch; SA, saphenous artery; SV, saphenous vein; SP-p, perforator point of the skin branch (yellow circle); S-p, intersection point obtained by making a vertical line from SP-p to the SV (red circle); DSPS, distance between SP-p and S-p