In the presented fragments G.M. Humphry discusses the anatomy, topography, structure, and function of the ligamentum capitis femoris (LCF) in detail. Mentioning the experiments of J. Struthers ( 1847 ) on removing the floor of the acetabulum, the author emphasizes his own priority. George Humphry argues with the brothers W. Weber, E. Weber (1836) over the conditions for tensioning the LCF in an upright position. According to our observations and experiments, the tension of the LCF in a single-support position is accompanied by extension and outward rotation of the hip as the pelvis rotates backward in the horizontal plane. At the conclusion of the chapter, the author apparently discusses coxarthrosis, leaning towards the mechanical theory of its pathogenesis. Humphry GM. A Treatise on the Human Skeleton including the Joints. Cambridge: MacMillan and Company , 1858. [fragment s ]   Quote pp. 79-80   Their fatty appendages. Appended to the synovial membranes and situated append

  The author mentions their observation of the displacement of the femoral head from the acetabulum outwards when the ligamentum capitis femoris (LCF) is stretched. Continuing experimental research, P.N. Gerdy discovered that the LCF, when stretched during adduction, also displaces the femur in the caudal direction (see 1833GerdyPN ). The translation from German was done in collaboration with ChatGPT 3.5.   Gerdy PN. Recherches, discussions, et propositions d'Anatomie, de Physiologie, de Pathologie, etc. Paris: Béchet, 1823. [fragment] Quote pp. 9 5 PROPOSITIONS La luxation du fémur en haut et en dehors est plus facile que celle en bas et en dedans, surtout parce que le ligament interarticulaire tend à s enrouler autour de la tête du femur, dans une violente adduction et qu il tire l os en dehors. Je m en suis assuré par l observation directe.   ASSUMPTIONS Dislocating the femur upwards and outwards is easier than down

  P.N. Gerdy, in his experiment, discovered tensioning of the ligamentum capitis femoris (LCF) during thigh adduction. At the same time, it was noted for the first time that the consequence of LCF tension during hip adduction is a downward and lateral displacement of the femoral head. Normally, this mechanism provides unloading of the upper articular surfaces when supporting one leg (see 1874SavoryWS ). The translation from French was done in collaboration with ChatGPT 3.5.   Gerdy PN. Physiologie médicale, didactique et critique. T. 1. Paris: Librairie de Crochard, 1833. [fragment] Quote pp. 551-554   L'inclinaison de la cuisse en dehors, que l'on nomme son abduction, est un mouvement assez étendu, mais qui pourtant ne permet pas à la cuisse de se placer perpendiculairement à sa direction verticale. Les batteleurs peuvent se reposer sur un plan horizontal, les cuisses écartées en sens opposé. Dans l'inclinaison de

  We present fragments from the book that laid the foundation of biomechanics of the hip joint considering the ligamentum capitis femoris (LCF). The authors experimentally proved that this structure is situated in the frontal plane when the body is in a vertical position. Analysis of observations showed that when standing on one leg, the LCF and the anterior portion of the iliofemoral ligament (pars descendens lig. iliofemoralis) are stretched and hold the pelvis. These ligaments counteract the weight of the body along with the head of the femur on the same side. The insight of the Weber brothers was later developed in the works of H. von Meyer (1856) , W. Turner (1857) , and W. Savory(1874) . Weber W, Weber E. Mechanik der menschlichen Gehwerkzeuge: eine anatomisch-physiologische Untersuchung. Gottingen: Dietrichsche Buchhandlung, 1836. [fragment s ] Quote p. 128 Wir werden nämlich im folgenden Abschnitte über das Hüftgelenk nachweisen, dass