Opinion is going to differ on whether you think swinging your arm around like that is a consequence of or justifiable by the action of raising your knee like that.
fa rulebook also states this tho
Handling the ball For the purposes of determining handball offences, the upper boundary of the arm is in line with the bottom of the armpit
Except for the above offences,
• directly from the player’s own head or body (including the foot)
• directly from the head or body (including the foot) of another player who is close
• if the hand/arm is close to the body and does not make the body unnaturally bigger
• when a player falls and the hand/arm is between the body and the ground to support the body, but not extended laterally or vertically away from the body
it hit his arm directly from his own thigh