In general it may be stated that the first three fingers of one hand are used with an easy downward gliding movement in which only the tips of the three fingers, evenly placed, are in contact with the patient’s body. This concentrates the attention upon a very small tactile surface which may become extremely sensitive by the concentration. Indeed, it may be said that vertebral palpation only became an art through the application of the principle of concentration in practice. The gliding movement is always downward, because to palpate upward will mass the superficial tissues under the fingers and confuse the palpater. If there is uncertainty in the mind of the palpater, as he proceeds, as to the identity of any vertebra he should go back to the second Cervical, or to any certainly recognizable vertebra previously fixed in mind, and recount.

The use of the hands for Atlas palpation differs from their use elsewhere and will be described under separate head. The use of the hands with the patient lying face upward is also different. If the patient be lying prone, the same three fingers are used and the same downward glide as with patient sitting.

Fig. 1. Position of hands in palpation for record.

With patient sitting, the palpater should step from side to side, changing hands frequently and usually palpating each vertebra with each hand before reaching a conclusion. There are three reasons for this. More accurate records may be made by combining two different impressions on each vertebra; with frequent change of hands one may prevent tiring and consequent loss of sensibility of fingers; this practice develops the tactile organs of both hands equally so that if occasion demand the use of either hand alone it is fitted for the task. To be ambidexterous in all departments of Chiropractic is an invaluable attainment, too often neglected.

The Count

Commence at the second Cervical, the first spinous process below the occiput, and let the fingers glide smoothly downward over the tips or along the sides of the spinous processes, without interruption of motion, until they reach the Sacrum. The palpater notes each vertebra passed and its number—mentally—so that when he reaches the Sacrum he knows that he has passed every intervening vertebra and received a touch impression from each. The Sacrum itself may usually be recognized by its peculiar shape and also by its articulations with the ilia.

If the fingers are raised from their contact during the count, the palpater must recommence at the second Cervical. It is impossible to be accurate in replacing the hand, once removed, until the count has been established and the peculiarities of certain vertebrae remembered, together with their numbers.

To determine the location of the fourth Lumbar where, on account of obesity, lipoma, Cervical lordosis, etc., the count of Cervicals or Sacral palpation is difficult, drop on heels behind the patient and place the second finger of each hand on the crest of the ileum. Then let the thumbs meet in the mid-spinal line in the same horizontal plane as the two second fingers, which spot should correspond to the interspace between third and fourth Lumbars. This measurement is accurate in about 98% of all cases, when patient sits erect; when it varies it will vary by about half the width of a Lumbar spinous process.

The count should be repeated until the palpater is certain that he is able to palpate every spinous process distinctly or to locate accurately any impalpable one. In making the count, palpater may note the number of some very prominent and easily recognizable Dorsal or Lumbar vertebra to be referred to as a starting point for a recount if confusion arises later. This recounting from some prominent vertebra is permissible only after the first accurate count has been made, but then will save the full count, especially when the patient is in an unfavorable position, as lying on table during adjustment.