Eight steps of upper limb exercise: the first two days after surgery, forearm elbow flexion and extension movements and fist clenching: the third day after surgery: the healthy hand helps the affected upper limb to do upward lifting movements, so that the affected hand is raised to the level of the head: the fourth day: the healthy hand squeezes the thumb of the affected limb and does straight arm lifting until it exceeds the head: the fifth day after surgery: the healthy hand holds the affected elbow slowly upward, so that it exceeds the head and straightens as much as possible: the sixth day after surgery Day 6: The fingertips of the affected limb gradually glide upward along the wall and are gradually raised: Day 7 and 8: The palm of the affected limb goes over the head and touches the opposite ear as much as possible: Day 9: The shoulder joint of the affected side is used as the axis for rotating forward and backward circular activities: Day 10: The affected limb is tried to lift the object over the head: Day 10: The affected limb is tried to lift the object over the head.