Morphological Manifestations of Human Locomotor Bipedality in Femur
https://doi.org/10.18499/2225-7357-2019-8-1-96-102
Abstract
The aim is to study the structure of the femur of conditionally healthy modern people, as part of the link of the musculoskeletal system, providing bipedal locomotion.
Material and methods. By the original osteometric method was measured 23 structures of 166 femoral bones with full synostosis of epiphysis without evidence of bone pathology. After the introduction of the coefficient of proportionality for linear parameters and the calculation of confidence intervals for each of them, a multilevel factor analysis was carried out, separately for the right and left femoral bones by the maximum likelihood factor analysis method with Equamax normalized rotation.
Results. Four levels of the structural organization, which characterized by asymmetry of factor loadings, are identified. The parameters forming the 1st level ensure the transfer of the mechanical load along the limb axis from the head through the intertrochantcric crest to the medial condyle. 2nd level parameters provide rotational movements at the knee joint. Parameters of the 3rd and 4th levels reflecting the function of the rotation of the leg in the hip joint when upright and maintaining the vertical position of the body in the sagittal plane.
Conclusion. Thus, the human femur is a multilevel system with asymmetric participation of parameters in its formation. Femur, as part of the musculoskeletal system, has a distinct vertical structural differentiation, which is manifested in the dominance of the right limb in the implementation of the support functions at the level of the proximal epiphysis, and motor functions at the level of the distal epiphysis of the femur.
About the Authors
I. N. Yashina
Kursk State Medical University, Kursk
Russian Federation
Russian Federation
Irina Yashina
Department of Human Anatomy,
ul. Karla Marksa, 3, Kursk, 305004
A. V. Ivanov
Kursk State Medical University, Kursk
Russian Federation
Russian Federation
S. V. Klochkova
First I.M. Sechenov Moscow State Medical University (Sechenov University), Moscow
Russian Federation
Russian Federation
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Review
For citations:
Yashina I.N., Ivanov A.V., Klochkova S.V. Morphological Manifestations of Human Locomotor Bipedality in Femur. Journal of Anatomy and Histopathology. 2019;8(1):96-102. (In Russ.) https://doi.org/10.18499/2225-7357-2019-8-1-96-102
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