On another sabbath (en heterōi sabbatōi). This was a second (heteron, as it often means), but not necessarily the next, sabbath. This incident is given by all three synoptics (Mar 3:1-6; Mat 12:9-14; Luk 6:6-11). See Matt. and Mark for details. Only Luke notes that it was on a sabbath. Was this because Luke as a physician had to meet this problem in his own practise?
Right hand (hē dexia). This alone in Luke, the physician’s eye for particulars.