95 (145)

attained. It may be necessary to stretch the muscles and other structures in order to lock the segments. Movement must not be forced beyond that necessary to attain the desired fixation by locking.

Double locking, cranial to and caudal to the segment treated is possible throughout the thor-acic spine, and always involves inflections in both the sagittal and frontal planes. As discussed in Part 2, p. 23, there must be only one inflection per locking. So one of the two inflections required for double locking will involve a change from ventral to dorsal flexion, and the other inflection will involve a change from right to left lateral flexion. This is equivalent to the requirement that the segment treated must “receive” the flexions of the treatment from its adjacent locked segments, ventral/dorsal flexion from one direction and right/left lateral flexion from the other direction.

5.1.4. Restrictions, Muscles and Therapies

The non-specific and specific therapy techniques for treating restrictions of the thoracic spine and ribs are listed in Table 5-1. The actions of the muscles which may cause those restrictions are listed in Table 5-2. The various restrictions possible are listed in Movement Restriction Tables 8-3 and 8-4, pp. 145 and 146.

Table 5-1. Restrictions of the Thoracic Spine and Ribs

SECTION	MOVEMENT RESTRICTED	MUSCLES WHICH MAY RESTRICT MOTION	TECHNIQUE/THERAPY	Number, Page
5.2.	Ventral Flexion	Most on dorsal side of thoracic spine, as well as stiffness in rib cage and spine itself	non-specific specific, Tl on T2	5.2.1,    97-98 5.2.2,    99-100
5.3.	Ventral flexion with lateral flexion and	Most of torso, as well as stiffness in rib	nonspecific	5.3.1, 101-102
	rotation to same side	cage and spine itself	specific, T1-T2 to T12-L1	5.3.2, 103-104
5.4.	Dorsal Flexion	Most on ventral side of thoracic spine, as well as stiffness in rib cage and spine itself	non-specific specific, T1-T2 to T12-L1	5.4.1,    105-108 5.4.2,    109-110
5.5.	Dorsal flexion with lateral flexion and	Most of torso, as well as stiffness in rib	non-specific	5.5.1, 111-112
	rotation to opposite sides	cage and spine itself	specific, T1-T2 to T12-L1	5.5.2, 113-115
5.6.	Rib mobility	Most between ribs and around thorax, and those associated with upper arm, as well as stiffness in rib cage and spine itself	specific, 2nd to 5th ribs specific, 5th to 12thribs	5.6.1,    116 5.6.2,    117

95