Anatomia applicata e chinesiologia, il meccanismo del movimento muscolare . I casi di curvatura laterale sono così vari e le complicazioni areso molti che la correzione è in gran parte una questione individuale. Un plansuggerito da Roth e chiamato da lui l'uso delle posizioni di keynote,illustra il carattere del lavoro per la correzione di mildcases. In molti di questi casi delicati il soggetto ha sufficienti difetti di postura 263 forza molecolare per raddrizzare facilmente la curva, ma non è in grado di bringare i muscoli giusti in azione per farlo. Prendendo una certa posizione gym-nastic che misura il caso, come pus
1662 x 1504 px | 28,1 x 25,5 cm | 11,1 x 10 inches | 150dpi
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Applied anatomy and kinesiology, the mechanism of muscular movement . ded. Cases of lateral curvature are so varied and complications areso many that correction is largely an individual matter. A plansuggested by Roth and called by him the use of keynote positions, illustrates the character of the work for the correction of mildcases. In many of these mild cases the subject has sufficient mus- DEFECTS OF POSTURE 263 cular strength to easily straighten the curve but is not able to bringthe right muscles into action to do it. By taking a certain gym-nastic position that fits the case, such as pushing the right armupward and the left arm sideward, he corrects the curvature, therow of spinous processes being for the time perfectly straight andvertical. Such a position, which must be found separately for eachindividual case, is the keynote position. The subject practisesthis movement many times in each lesson and each time that hereturns his arms to the normal position at the sides he does itslowly and tries to retain the spine in its straightened position as. Fig. 158.—Straightening a lateral curve by use of a keynote position. he does so. Gradually he gains the right muscular sense of theposition and becomes able to assume the normal straight positionat will. In later stages the bones and ligaments become adapted to theform of the curve, and then correction involves the use of mechan-ical force to make the spine flexible again along with developmentof muscular power and nervous control. An interesting exampleof this use of force is suspension of the subject by the head, makingthe force of gravitation help in correcting a fault it did much tocause. The stomach and liver are attached to the under surface of thediaphragm and the other abdominal organs to the posterior wall 264 THE UPRIGHT POSITION by folds of membrane called ligaments. They are not true liga-ments, composed of strong fibrous tissue like those that hold thebones in place, but are folds of the peritoneum,
