ZOOLOGY AND PALEONTOLOGY

ZOOLOGY AND PALEONTOLOGY

(Information on the presence in existing and extinct animals...)

LCF of Pithecanthropus In the hip joint of Pithecanthropus (Pithecanthropus erectus, Homo erectus 2.12-0.43 Ma), there was a LCF.
LCF of Australopithecus The Australopithecus afarensis (3.2 Ma) had a ligament of the head of femur.
1802CamperP The author discusses the absence and unknown role of the LCF in the elephant and some monkeys.
1803CamperP The author discusses the absence and unknown role of LCF in the orangutan, elephant, and sloth.
1824MeckelJF The author notes the absence of LCF in orangutans, three-toed sloths and turtles.
1835OwenR The author discusses the absence of the LCF in chimpanzees, orangutans and some other mammals.
1851BarkowHCL The author briefly describes LCF in the tiger and llama.
1864MacalisterA LCF has been observed in ostrich and is noted to be strength.
1869MivartG The author discusses his observations of LCF absence in chimpanzees and orangutans.
1877aWelckerH The author discusses the differences in the anatomy of the LCF in animals: tapir, orangutan, chimpanzee.
1879BischoffTLW The paper discusses the size of the LCF in the gorilla.
1880GadowHF LCF has been observed in rhea, cassowary and ostrich and is noted to be strength.
1880HuxleyTH The author writes about the presence and absence of LCF in some animal species.
1883SuttonJB According to the author, the LCF is a tendon of the pectineus muscle, separated from it in consequence of skeletal modifications.
1884SuttonJB The author discovered that in the ostrich the LCF was not continuous with the ambiens muscle.
1885FlowerWH The author notes the presence of the LCF in almost all mammals and lists the species in which it is absent.
1885SuttonJB The author lists the species of animals in which he did not find the LCF.
1887SuttonJB According to the author, the LCF is a modified tendon of the pectineus muscle.
1889EckerA The author points out the presence of the LCF in the frog and the presence of a similar structure in the shoulder joint.
1894KeithA The paper discusses the development, anatomy, strength, and presence of the ligamentum LCF in various monkeys.
1898LeiseringAGT The author describes the LCF in the horse and its accessory ligament.
1899ParsonsFG The paper discusses the anatomy, role and presence of the LCF in different animals.
1932StolpeM The author studied the LCF in birds, mainly waterfowl, the strength is noted and the role.
1934FrancisETB The author points out that the salamander has two acetabular ligaments, analogous to the LCF.
1971CracraftJ LCF has been studied in the pigeon, its strength has been noted and its biomechanics has been described.
1981OrtnerDJ_PutscharWGJ The authors describe signs of LCF pathology in the remains of a Bronze Age individual.
1993BaumelJ. The attachment sites of the LCF in birds are indicated.
2009FrandsonRD_FailsAD The authors discuss the terminology, structure, and role of the LCF in the horse.
THE OLDEST LCF. The first quadruped with LCF '
University_of_Guelph(website). The publication mentions the animal's LCF and states its function: fixing the femoral head in the acetabulum.

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Vertebrates

VERTEBRATES According to the molecular clock, a specific method for dating phylogenetic events, vertebrates (Vertebrata) separated from arthropods (Arthropoda) 976±97 Ma (2004HedgesSB_ShoeJL). The latter began to dominate in species diversity with the Cambrian burst of radiation, which occurred 520 Ma (2010EdgecombeGD). This ratio in the fauna of the Earth is still preserved. Approximately 525 Ma, the phylum Chordates separated from the group of bilaterally symmetrical animals (1995ChenJY_ZhouGQ). In turn, the evolution of chordate organisms led to the formation of the first vertebrates at least 500 Ma, from which the jawed mouths 450-400 Ma descended, becoming the ancestors of the placoderms or "armored" fish (Placodermi) (1979 НаумовНП _ КарташевНН ). Sculptural reconstruction of the placoderm Coccosteus from the order Arthrodires, Middle Devonian, 393.3-382.7 Ma ; exposition of the Orlov Paleontological Museum (Moscow); photo by the author. The first cartilaginou...

1753TarinP

Fragments from the book Tarin P. Ostéo-graphie (1753). The author notes the localization of ligamentum capitis femoris (LCF) and uses synonyms: ligament rond, ligamentum teres capitis femoris. The text is prepared for machine translation using a service built into the blog from Google or your web browser. Quote p. 24 Les Ligamens de l'extrémité inférieure sont, 1°. la Membrane capsulaire, &c. de la cavité cotyloïde, le Ligament rond, l'Appareil ligamenteux propre à cette cavité; le Ligament transveríal interne de son bord, le transversal externe, les deux Ligamens glanduleux; … Quote p. 54. Illæ tres offeæ portiones simul unitæ Cavitatem cotyloïdeam q.t. a. constituunt, in qua occurrit Foveols h. glandulas synoviales articulationis excipiens, cuique sesc inserit ligamentum teres capitis femoris, &c. Vid. t. u. v. TAB. I. II. III. External links Tarin P. Ostéo-graphie, ou Description des os de l'adulte, du foetus, &c. Precedée d'une introduction a l'etu...

1990HarveyB

Harvey B, sculpture, Jacob wrestling with the angel (ca. 1990). Depicting the circumstances and mechanism of the ligamentum capitis femoris (LCF) injury based on the description in the Book of Genesis: 25 And Ja cob was left alone; and there wrestled a man with him until the breaking of the day. 26 And when he saw that he could not pre vail against him, he struck against the hollow of his thigh ; and the hollow of Jacob's thigh was put out of joint, as he was wrestling with him. … 33 Therefore do the children of Israel not eat the sinew which shrank, which is upon the hollow of the thigh, unto this day; because he struck against the hollow of Jacob's thigh on the sinew that shrank. ( 1922LeeserI , Genesis (Bereshit) 32:25-26,33) More about the plot in our work: Ninth month, eleventh day ( 2024АрхиповСВ. Девятый месяц, одиннадцатый день ). Bessie Harvey – tree root sculpture Jacob Wres tling with the Angel (ca. 1990); original in the high.org collection (Fair...

2008ArkhipovSV

On the Role of the Ligamentum Capitis Femoris in the Maintenance of Different Types of Erect Posture S.V. Arkhipov Keywords: ligamentum capitis femoris, ligamentum teres, ligament of head of femur, abductor muscle group, role, function, hip joint, model, biomechanics, walk, gait cycle, single-legged stance ABSTRACT New experimental and clinical data on the function of the ligamentum capitis femoris (LCF) and its participation in maintaining an erect posture were obtained. It was established that this anatomical element is involved in constraining the hip joint adduction and may ﬁ x the joint in the frontal plane, turning it into an analogue of a second-class lever. In both unstrained one-support and asymmetrical two-support orthostatic postures, when the LCF is stretched and the abductor muscle group is exerted, a load equal to the body weight is evenly distributed between the upper and lower hemispheres of the caput femoris. In addition, the LCF fu...

The Big Bang

The Big Bang The maximum age of the observable Universe, established by measuring the anisotropy of the cosmic microwave background, is 13.801±0.024 billion years. (2020AghanimN_RoudierG). The relic stages of the creation of the World are only approxim ately understood by theoretical physicists. The development of matter into molecules, as well as the start of time, is logically described by the Big Bang theory and the concept of the expansion of space (2012HawkingS). It is impossible to imagine the Universe before its expansion from some homogeneous space or an infinitesimal grain. The reason for this is the «inner cosmic oblivion» of the previous state (2007BojowaldM). In our opinion, before that there was a black, cold, motionless Peace. Accordingly, before the mark of 13.8 billion years ago, the search for evidence of ligamentum capitis femoris (LCF) is futile anywhere in the Universe. One second after the Big Bang, the Universe consisted of light and elementary particles hea...

Postulates of LCF Mechanics

Postulates of LCF mechanics We continue to develop a new scientific direction « Mechanics of the Ligamentum Capitis Femoris »: https://roundligament.blogspot.com/2024/10/lcf-mechanics.html Analysis of the accumulated information allowed us to clarify the postulates of this scientific discipline: - Strong, flexible, and non-stretchable with specific attachment points. - Limits adduction, rotation, and cranial displacement of the femur. - Ensures rhythmicity, symmetry, and energy efficiency of walking. - Performs the function to suspend the pelvis during single-leg support. - Shunts load on the femoral head and the abductor muscle group of the hip joint. NB! Considering these positions in your clinical practice, you will reduce the likelihood of developing hip osteoarthritis and gait disturbances in patients. Join the group LIGAMENTUM CAPITIS FEMORIS Publication in the facebook group 05/11/2025. BLOG CONTENT NEWS AND ANNOUNCEMENTS FACEBOOK

2008DoddsMK_McCormackD

Content [i] Annotation [ii] Original text [iii] References [iv] Source & links [v] Notes [vi] Authors & Affiliations [vii] Keywords [i] Annotation Abstract of the article: Dodds MK et al . Transarticular stabilization of the immature femoral head: assessment of a novel surgical approach to the dislocating pediatric hip in a porcine model (2008). The article describes an experiment of reconstruction of ligamentum capitis femoris (LCF) in pigs with the formation of a femoral tunnel. The text in Russian is available at the following link: 2008DoddsMK_McCormackD . [ii] Original text Abstract Background: Acetabular dysplasia and hip instability are common in neuromuscular diseases such as spina bifida and cerebral palsy due to deranged muscle function around the hip. Occasionally in developmental dysplasia of the hip, persistent instability may be difficult to manage by standard treatments. It i...

2025ArkhipovSV. Physicians Who Became Gods

The English translation of the artistic etude by Sergei Arkhipov « Врачи , ставшие Богами : Рационально - критическое богословие » . The etude that mentions LCF is based on the Prologue and Epilogue of the essay: Архипов СВ. Дети человеческие: истоки библейских преданий в обозрении врача . Йоэнсуу: Издание Автора, 2025. [Arkhipov SV. Human Children: The Origins of Biblical Legends from a Physician's Perspective]. Physician s Who Became Gods: Rational-Critical Theology By Sergey V. Arkhipov CONTENT The Prolegomena The Scene The play “ Immanuel ” The Divertissement The Prelude The Creation and Birth The Ministry and Teaching The Coda The Reflections a fter Word and Sound Application The Prolegomena Is it ethical to offer children, the sick, and the less educated a literal or supernatural interpretation of Genesis and the Gospels when a reasonable explanation exists? I propose a rational, interdisciplinary reading of the Scriptures from the perspective...

1531SteucoA

Content [i] Annotation [ii] Original text (in Latin) [iii] English translation [iv] Source & links [v] Notes [vi] Authors & Affiliations [vii] Keywords [i] Annotation Fragments from the book: Steuco A . Augustini Steuchi Eugubini Veteris Testamenti ad ueritatem Hebraicam recognitio (1531). The author discusses the term ligamentum capitis femoris (LCF) in the book of Genesis and notes that this structure serves a supporting and motor function and, when injured, causes lameness. The text in Russian is available at the following link: 1531SteucoA . [ii] Original text (in Latin) Quote p. 308 Tetigit neruum fœmoris כַּף יְרֵבוּ id est Latitudinem coxæ asseruntqs. Hebræi significare hoc loco latum os coxæ: ut ab Auen Esdra quoqs annotatu est : in ea parte neruus coxæ est : at qs hoc est quòd post neruū arefactum claudicabat Iacob. Nõ enim neruus hoc loco, membrű genitale significat: q...

Australopithecus Gait

In our opinion, the ligamentum teres or ligamentum capitis femoris (LCF) in Australopithecus afarensis determined the gait. Its pelvis moved in the frontal plane similar to that of a modern human. In the horizontal plane, the rotational movements of the Australopithecus pelvis were carried out with a significantly smaller amplitude. Presumably Australopithecus afarensis had relatively shorter steps than Homo sapiens. During walking, the shoulder girdle was positioned in the frontal plane, and the arms exhibited minimal oscillation in the sagittal plane. Illustration: Comparative analysis of LCF movements On the right is the acetabulum of Homo sapiens (photo by the author); on the left is the acetabulum of Australopithecus afarensis 3D model of the pelvis (fragment of a screenshot from sketchfab.com ); The distal end of the LCF (ligamentum teres) in Australopithecus moved in the horizontal plane in the acetabulum fossa with a smaller amplitude than in modern humans. k eyword...

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