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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LCF in 2026 (May)

LCF in 2026 (May ) (Quotes from articles and books published in May 2026 mentioning the ligamentum capitis femoris) Kim, P. S., Kang, C., Lee, J. K., & Hwang, J. M. (2026). Hip arthroscopy to treat symptomatic paralabral cysts: a retrospective analysis of clinical outcomes. Arthroscopy and Orthopedic Sports Medicine , 13 (1), 27-34. [i] e-aosm.org Ko, H. Y. (2026). Vascular Anatomy of the Extremities and Lungs. In Practical Functional Anatomy for Spinal Cord Injury Rehabilitation: A Guide for Physiatrists and Rehabilitation Specialists (pp. 191-223). Singapore: Springer Nature Singapore. [ii] link.springer.com Aiba, H., Yamaguchi, M., Kimura, H., & Murakami, H. (2026). Advances in limb-salvage surgery and reconstruction for pediatric bone and soft tissue tumors. Frontiers in Pediatrics , 14 , 1817788. [iii] pmc.ncbi.nlm.nih.gov Bajwa, A., Villar, R., ...

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...

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...

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...

1943SinzWA

Sinz WA , s culpture Jacob and the Angel (1943). 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 ). Walter A. Sinz – Jacob and the Angel (1943). Ceramic. Gift of Hilda Kisella (2007.187) ; original in clevelandart.org collect...

1132Sant’Orso

Collegiate Church of Sant’Orso of Aosta (France), capital – Jacob with the Angel (1132). 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 ( 2024 АрхиповСВ. Девятый месяц, одиннадцатый день ). Collegiate Church of Sant’Orso of Aosta (1132) Capital № 21 – Jacob with the Angel. О riginal ...

20c.WikstromB

Wikstrom B , s culpture I will not let you go» (Jacob wrestling the Angel , 20th cent.?) . 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 ). Brit Wikstrom – « I will not let you go» (Jacob wrestling the Angel , 20th?) . O riginal in gg...

THE ROLE OF THE HIP JOINT LIGAMENTS

The role of the hip joint ligaments Ligaments tighten when the pelvis tilts, support the body, and correct the movement of the center of mass. A horizontal position of the pelvis in a single-leg stance and during walking is pathological. See experiments: https://kruglayasvyazka.blogspot.com/2024/07/blog-post_26.html https://kruglayasvyazka.blogspot.com/2024/07/lcf_16.html Publication in the facebook group 05/23/2025. BLOG CONTENT NEWS AND ANNOUNCEMENTS FACEBOOK

Australopithecus afarensis

AUSTRALOPITHECUS AFARENSIS In 1735, Carl Linnaeus (1707-1778) placed humans as a species «Homo nosce te ipsum» in the order Anthropomorpha along with monkeys and sloths (1735LinneC). In a publication in 1758, the naturalist transferred humans to the order Primates (1758LinneC). Today, humans and chimpanzees are united in the tribe Hominini, as descended from a common ancestor (2001GrovesCP). It has been established that the chromosome that distinguishes humans from monkeys was formed before 4.5 Ma (2022PoszewieckaB_GambinA). The hominin subfamily Sahelanthropus tchadensis lived in the Republic of Chad (Central Africa) from 7.2±0.31 to 6.8±0.45 Ma (2008LebatardAE_BrunetM; 2012ReynoldsSC_GallagherA). Reconstruction of its musculoskeletal system showed that the creature could have been an upright bipedal primate (2005ZollikoferCP_BrunetM). Fossils of what is probably the first bipedal representative of the hominid family Orrorin tugenensis, lived 6.1-5.7 Ma and still retained adapta...

NEWS 2026

New publications of our resource in 2026 The initial phase of collecting data on LCF, accumulated prior to the 20th century, is largely complete. Next, we plan to analyze and synthesize thematic information, adding data from the 20th and 21st centuries. The work will focus primarily on: prevention, diagnosis, arthroscopy, plastic surgery, and endoprosthetics. May 29 , 2026 LCF in 2026 (May) Quotes from articl es and books published in May 2026 mentioning the ligamentum capitis femoris. May 28 , 2026 Online Journal «A BOUT ROUND LIGAMENT OF FEMUR», May 2026 May 26 , 2026 20c.Wikstrom B Sculpture depicting the circumstances and me chanism of the LCF injury. May 23 , 2026 1990HarveyB Sculpture depicting the circumstances and mechanism of the LCF injury. May 22 , 2026 1981OrtnerDJ_PutscharWGJ The authors describe signs of LCF pathology in the remains of a Bronze Age individu al. May 21 , 2026...

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