Our body reacts to flat ground by creating a lumbar
hyperlordosis. This hyperlordosis may affect the entire lumbar section
(typical case of lumbar hyperlordosis) or concentrate on a joint made
up of the last lumbar vertebra and the first sacral vertebra (this
case is "wrongly" defined as disappearance of lumbar lordosis).
The main player of this mechanism is the powerful psoas muscle.
Lumbar hyperlordosis is compensated in different ways, both in the
dorsal and cervical sections (including the temporo-mandibular joint
and teeth) and in the lower limbs, by several parameters, among which
we certainly must place genetic heritage.
Actually, these compensations are “forcing actions” that our brain is
obliged to perform on our muscles, tendons, ligaments, articular
capsules, joints, and nerves, etc. in order to obtain a posture, as
much as stable as possible, on a ground which is not congenial to us.
For that reason, most of the population shows postural alterations
capable of generating pain and dysfunctions in the upper limbs and
shoulders (periarthritis, epicondylitis, tunnel etc.), back and hip
(cephalea, cervicalgy, dorsalgia, lumbalgy, lumbosciatica, ecc.) and
lower limbs (coxalgia, gonalgia, metatarsalgy, hallus valgus, etc.).
N.B.: Comun scoliosis, at different degrees, in almost all
people, entails a rotation of vertebrae which, in its turn, causes a
reduction in the intervertebral foramen, which in some cases results
in irritation of the spinal nerve passing through it (this is the
case, for example of many false slipped disc, tunnel syndrome,
N.B.: A repeated use of high heel shoes, increases lumbar
hyperlordosis in a manner that is directly proportional to their
height, and entails a postural worsening; high heel and narrow pointed
shoes (which unnaturally trap the forefoot, which should be free to
properly perform its task) considerably contribute to
muscular-skeleton and circulatory problem generation, due to posture.