On the middle phalanx.
In general, stabilization of the adjacent digits to give fixation of the digit toward which the finger is moved and to prevent assistance from the digit on the other side.
First: Abduction of the index finger toward the thumb. Apply pressure against the radial side of the index finger, in the direction of the middle finger.
Second: Abduction of the middle finger to- ward the index finger. Hold the middle finger, and pull in the direction of the ring finger.
Third: Abduction of the middle finger toward the ring finger. Hold the middle finger, and pull in the direction of the index finger.
Fourth: Abduction of the ring finger toward the little finger. Hold the ring finger, and pull in the di- rection of the middle finger.