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.

Comments

Human LCF intersection

HUMAN LCF INTERSECTION In the south of China, in the Guangxi Zhuang Autonomous Region, the archaeological Neolithic site of Dingsishan was investigated. Burials of 355 people were found in this place. The authors of the article (2024YeZ_LiFJ) identified 91 skeletons with traces of manipulations with the remains. They are attributed to burials of the Dingsishan III-IV phase, aged 8.0-4.5 thousand years. 13 notches were found on the proximal part of various femurs. « Cutmarks on the femoral head, neck and intertrochanteric line, as well as along the medial linea aspera of the femoral shaft, suggest that soft tissue around the hip, including the iliofemoral ligament and the iliacus and adductor muscles, was severed to disarticulate the joint.» This and other postmortem bone injuries «... suggests that corpse treatment at Dingsishan included disarticulation » (2024YeZ_LiFJ). Figure 4 of the cited article shows the distribution and direction of cutmarks on human skeletons from Dingx...

1803LarreyDJ

Content [i] Annotation [ii] Original text [iii] English translation [iv] Source & links [v] Notes [vi] Authors & Affiliations [vii] Keywords [i] Annotation Fragment from the book: Larrey DJ. Relation historique et chirurgique de l'expedition de l'armée d'Orient, en Egypte et Syrie (Historical account and surgery of the expedition of the Army of the Orient, in Egypt and Syria, 1803). The author describes exarticulation in the hip joint and the technique of cutting the ligamentum capitis femoris (LCF), which he calls the "interarticular ligament". The text in Russian is available at the following link: 1803LarreyDJ . [ii] Original text (France ) Quote pp. 325-328 Les praticiens qui ont proposé l'extirpation de la cuisse ne sont point d'accord sur la manière de la faire; cependant presque tous, craignant l'hémorragie de l'artère crurale, commencent par la ligature de ce vaisseau, forment ensuite un lambeau aux dépens des muscles ...

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...

1858IvanovAA

Ivanov A.A., Jacob’s Wrestling with God (1849-1858) . Depicting the circumstances and mechanism of the ligamentum capitis femoris (LCF) injury based on the description in the Book of Genesis: 25 And Jacob 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 ). Alexander Ivanov – Jacob’s Wrestling with God (1849-1858); original in the ekzeget.ru col...

LCF in 2026 (July)

LCF in 2026 (July ) (Quotes from articles and books published in July 2026 mentioning the ligamentum capitis femoris) Çetik, R. M., Bakırcıoğlu, S., Büyükdoğan, K., Çağlar, Ö., Atay, Ö. A., & Atilla, B. (2026). Cam-type femoro-acetabular impingement: Mid-term functional results and joint awareness of arthroscopic, mini-open and surgical dislocation techniques. Acta Medica , 57 (2), 123-131. [i] actamedica.org Khan, M. Y., Khan, R., Shaikh, H., Persaud, N. A., Rama, S., & Khan, Y. (2026). Evolution of Hip Arthroscopy in Modern Orthopedic Practice. Cureus , 18 (6). [ii] cureus.com Sanders, W. J., Ji, X. P., & Jablonski, N. G. (2026). New remains of Stegodon zhaotongensis (Proboscidea, Stegodontidae) from the Late Miocene site of Shuitangba, Yunnan Province, China. Journal of Mammalian Evolution , 33 (3), 33. [iii] link.springer.com Randelli, F. (2026...

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1869BigelowHJ

Fragments from the book Bigelow HJ. The mechanism of dislocation and fracture of the hip (1869). The author discusses broken of the ligamentum capitis femoris (LCF) in hip dislocations. Quote p. 10 In the spring of 1861, having been led to expose a joint, the luxation of which had been the subject of a lecture, I was agreeably surprised to observe the simple action of the ligament, - a simplicity which subsequent experience has confirmed, and which strikingly explains the phenomena observed in the living subject (1). The dislocated joint alluded to presented on examination the following appearances. 1. Great laceration of the muscles about the joint. 2. The ligamentum teres broken . 3. Laceration of the inner, outer, and lower parts of the capsule. 4. The anterior and upper parts of the capsule uninjured, and presenting a strong fibrous band, fan-shaped and forked. Quote p. 18 FIG. 1. — The Y ligament, showing its inner and outer fasciculi. The form...

IMAGES AND VIDEOS

IMAGES AND VIDEOS ( Drawings, diagrams, photographs, videos... ) T he Oldest Images of the LCF ( video ) The three oldest images of the ligamentum capitis femoris. 1000Jacob&Archangel. Drawing depicting the circumstances and mechanism of the LCF injury. 1510Leonardo_da_Vinci In the drawing, a uthor depicted the distal fragment of the LCF. 1639BreenberghB. Drawing depicting the circumstances and mechanism of the LCF injury. 1685BidlooG A stretched ligament is shown. 17c.OvensJ. Drawing depicting the circumstances and mechanism of the LCF injury. 17c.PatelP . Drawing depicting the circumstances and mechanism of the LCF injury. 1738LadmiralJ The first illustration and description of the LCF in an infant. 1794LoderJC Image of the hip joint, ligamentum capitis femoris (LCF) and peripheral part of the acetabular canal. 1827Pax tonJ Visualization of th e LCF through...

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., ...

Inferior Portal. Part 1.

Original in Russian is available at the link: Нижний портал. Часть 1. below is a machine translation edited by a non-native speaker ( version dated 03/02/2025 ) . INFERIOR PORTAL FOR HIP ARTHROSCOPY: A PILOT STUDY PART 1. Background and Hypothesis Arkhipov S.V., Independent Researcher, Joensuu, Finland Abstract: The article presents, theoretically and graphically substantiates the technique of a new arthroscopic approach to the central compartment of the hip joint. It is proposed to introduce the optical system of the arthroscope from below through the acetabular notch without traction. Similar approaches were used for puncture, arthroscopy, arthrography, and arthrotomy of the hip joint. Diagnostics using the described lower portal will exclude complications caused by distraction of the leg and compression of the perineal support during surgery. CONTENTS PART 1. Background and Hypothesis [1] . Introduction [2] . Passage through t...

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