Set of respiratory, posture and rachis musculatures; the rachis according to Meto2o is a unique structure, divided in its turn into three regions (cervical, back-thoracic, lumbosacral) but that is to be used, educated and trained as a whole.
According to Meto2o, in fact, the physiological curves perform support and aid functions, complementary with each other, so as to join together and form a single supporting structure.
A structure that absolutely must be independent of body areas with which it is closely related: shoulder blades and pelvis, and in particular the sacrum should not be in any way hooked to the base of the pelvis (coccyx), otherwise an eventual problem of this type would cause a restriction of the mobility of the pelvis itself and, consequently, a series of problems with the hips.
Even in this case, Meto2o considers the joint complex of the shoulder as a single, big entity formed from 5 subjoints a bit smaller.
With this observation, the joint complex of the shoulder is used in an independent and autonomous way, but always taking into account that most of the problems are not caused by the joints themselves: shoulder blades and the cervical part of the spine will be considered of fundamental importance in the treatment of shoulder joints.
Consequently, the neck and upper limb as a whole could be useful in the treatment of problems in the "shoulder", a concept sometimes used in a too general way.
Meto2o treats the hip joint exactly in the same way as the shoulders, although this is an enarthrosis a solid joint that much different from the shoulder joint complex.
In fact, the hip results to be a pretty solid joint with musculatures, connective tissues and bones in much lower number than the shoulder, not to mention that in the hip joint the role of the pelvis is of substantial importance.
What may fall within the competence of the hip comes up to the knee, which often suffers from problems related to the posture of the upper articulation. The decisive role played by the basin is treated in the dedicated paragraph.
We have already mentioned the concept of the independence that the sacrum must have compared to the coccyx in the paragraph dedicated to the trunk; with regard to the pelvis it will be necessary to dwell more on its equilibrium and position that it tends to use in everyday life, as well as in the efforts we make.
Meto2o, in fact, considers that all the motor actions that we do have as a common denominator the center of strength, that is the pelvis, where the gravity from high and the thrust of the lower limbs from below converge, therefore it must be strong and solid but at the same time it must allow the spine and hips to move without any restriction.
Depending on the positioning of the pelvis, the body will have more ease in certain motor actions and more difficulty in others; the axial rotations (anteversion and retroversion) and translations on the transverse plane (antepulsion and retropulsion) are in fact influencing related and efferent muscle groups, influencing decisively our actions.