1* Andy PETROIANU 2* Valentin NIȚESCU
1* Department of Surgery, Faculty of Medicine, Federal University of Minas Gerais, Brazil
2 ** Department of Surgery, “Clinical Hospital Dr.I. Cantacuzino”, Bucharest, Romania
In quadrupeds, the pelvis has the longitudinal axis disposed, like the spine, almost parallel to the surface of the soil, and the bodyweight is distributed over the four limbs. In this context, the anterior (thoracic) limbs serve mainly for support and fixation, and the posterior ones for propulsion, the morphological structure thus conferring a cylindrical, elongated, basin shape. Taking into account these considerations, in animals copulation is normally done by approach and posterior position, the copulatory organs being caudal.
The bipedal vertical station-orthostatism, which appeared at the beginning of the Quaternary era in hominids and, of course, kept in humans, was determined by the transition to the bipedal walk with the formation of lumbar lordosis and the changes of the propulsion and propulsion functions, to which was added the gestation function. Thus, the bine pelvis
has acquired a distinctly different character in humans, by the arrangement of the ischial spine in a certain anatomical topography and the connection of the pubic bones, respectively the establishment of an arch (pubic arch) and the realization of a basin with a specific topography, having two cavities – pelvis minor and major pelvis – occupied by the bladder, rectum, intestinal loops and internal genital organs, which favors copulation and gestation in females.
The bone pelvis is located in the central axis of the body in the orthostatic position, where the human spends more than two-thirds of the day. It transmits to the lower limbs the weight of the trunk, in the form of a funnel with the tip down, and the position of the vulva confers easy copulation. That is why, for the de- flowering, the position of the dorsal decubitus is recommended.
Correspondence to: 1* Professor Andy Petroianu, Avenida Afonso Pena, 1626 – apto. 1901, Belo Horizonte, MG 30130-005, Brazil,E-mail: firstname.lastname@example.org,
2**. Nițescu Valentin, MD, E-mail: email@example.com, Phone. +0740953351.