Fig. 20. The “T. M.,” No. 2. Note position of right arm and hand of adjuster.
Movement
A quick, simultaneous movement of both hands in opposite directions, two-thirds of which is given with the hand which holds the head. The thumb in contact with the spinous process moves slightly inward toward the median line but its chief use is to hold the vertebra very firmly. To this end part of its force is directed forward against the shoulder and through the ball of the thumb.
Failure to place the head properly or in securing sufficient flexion of the neck before move is attempted are the chief causes of failure. Force must be delivered quickly and sharply and the best adjustment of this kind is usually the one in which the head and hands move through the least space.
Uses
This movement is obviously useful only for the correction of rotation, since the force is directed sidewise against the spinous process.
The “T. M.” was originally intended as a Cervical adjustment, but its greatest use is now from C 6 to D 2 inclusive. Above the sixth its use is questionable because of the possibility of moving more than one vertebra or some other than the one desired.
“THE RECOIL”
(Pisiform Contact)
Position of Patient
This movement is best given on bifid bench of the type commonly known to the profession. Place patient on forward section so that its rear edge rests just below the axilla; this may be ascertained by passing a hand under patient’s arm after he is in position, when the edge of the bench should be felt about an inch below the hanging arm. The thighs should rest on rear section so that the pubic symphysis is free of the bench. The semicircular pubic cut is an advantage in that it avoids injury without making necessary too great a suspension between sections.