Vincent's NT Word Studies
6. His right hand (h ceir autou h dexia). A very precise mode of statement. Lit., his hand the right one. Luke only specifies which hand was withered. This accuracy is professional. Ancient medical writers always state whether the right or the left member is affected.Withered. See on Mark iii. 1.
Robertson's NT Word Studies
6:6 {On another sabbath} (en heterwi sabbatwi). this was a second (heteron, as it often means), but not necessarily the next, sabbath. this incident is given by all three synoptics (#Mr 3:1-6; Mt 12:9-14; Lu 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} (he dexia). this alone in Luke, the physician's eye for particulars.