BLOG MOTTO

The ligament of the head of femur, called ligamentum capitis femoris (LCF) in Latin, is the most controversial and least studied anatomical structure in vertebrates. The authoritative Russian biomechanist Professor D.V. Skvortsov noted that its “function is not obvious,” and it is all the more interesting to find out what its significance and why it is so difficult to treat the developed changes. The author has dedicated over three decades to studying and contemplating LCF. The Blogger platform has provided a convenient avenue to share accumulated information and thoughts.

The motto of the project: “By collecting all available knowledge about the femoral head ligament, we are clarifying its role.”

A clear understanding of the significance and functioning of LCF will enable the development of new effective technologies, quality services and improved implants, as well as decipher the pathogenesis of a number of hip diseases. We expect that this will improve the results of treatment, diagnosis, and prevention of hip pathology, preserve mobility, and improve the quality of life for people and pets. According to our plan, the blog will contribute to the acquisition of new knowledge, and will serve as an information foundation for further research in the field of medicine, veterinary medicine, biology, paleontology, and robotics.

Our resource will provide up-to-date information about LCF to specialists who, by the nature of their work, “come into contact” with hip joints. The project is addressed to professional scientists, teachers, physicians, veterinarians, biomechanists, biologists, morphologists, paleontologists, anthropologists, sports trainers and roboticists. For students, a blog will help broaden their horizons, assist in deciding on a specialization, and for some, choose a path in life.

With sincere respect to you,

Sergey Arkhipov

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Translated from Russian in collaboration with ChatGPT (version 3.5, developed by OpenAI) and the Google Translate service.

Original text:

Связка головки бедренной кости, на латыни именуемая ligamentum capitis femoris (LCF), – наименее изученная и пока самая противоречивая анатомическая структура позвоночных. Авторитетный российский биомеханик профессор Д. В. Скворцов отметил, что ее «функция неочевидна», и тем интереснее узнать, зачем она нужна, как возникла, почему столь затруднительно лечение развившихся изменений. Автор изучал и размышлял о LCF свыше трех десятилетий. Платформа Blogger предоставила удобную возможность поделиться накопленной информацией и мыслями.

Девиз проекта: «Собирая все доступные знания о связке головки бедра, уточнять значение».

Ясное понимание роли и функционирования LCF позволит: разработать новые эффективные технологии, совершенные продукты и качественные услуги, а также расшифровать патогенез ряда заболеваний тазобедренного сустава. Мы ожидаем, что это улучшит результаты лечения, диагностики и профилактики патологии тазобедренного сустава, сохранит мобильность, повысит качество жизни людей и домашних животных. По нашему замыслу, блог поспособствует обретению нового знания, создав информационный фундамент дальнейших исследований в области медицины, ветеринарии, биологии, палеонтологии, робототехники. Наш ресурс будет снабжать актуальными сведениями о LCF специалистов, которые по роду своей деятельности «соприкасаются» с тазобедренными суставами. Проект адресован профессиональным ученым, преподавателям, врачам, ветеринарам, биомеханикам, биологам, морфологам, палеонтологам, антропологам, спортивным тренерам и робототехникам. Учащимся блог поможет расширить кругозор, определиться в специализации, а кому-то и в выборе жизненного пути.

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1969DeeR

Content [i] Annotation [ii] Original text [iii] Illustrations [iv] Source & links [v] Notes [vi] Authors & Affiliations [vii] Keywords [i] Annotation Article : Dee R. Structure and function of hip joint innervation (1969). The author discusses the nervous system of the ligamentum capitis femoris (LCF) and its role in hip biomechanics. The text in Russian is available at the following link: 1969DeeR . [ii] Original text STRUCTURE AND FUNCTION OF HIP JOINT INNERVATION Arnott Demonstration delivered at the Royal College of Surgeons of England on 4th February 1969 by Roger Dee , M.A., F.R.C.S. Neurologcal Laboratory, Royal College of Surgeons of England, and Department of Orthopaedic Surgery, Middlesex Hospital, London In 1885 JAMES ARNOTT, surgeon to the Middlesex Hospital and one of the founders of its Medical School, endowed a series of lectures to be given at the Royal College of Surge...

LCF in 2025 (August)

LCF in 2025 ( August ) (Quotes from articles and books published in August 2025 mentioning the ligamentum capitis femoris) Castro, A., de Melo, C., & Leal, F. (2025). Complications in hip Arthroscopy: Recognizing and managing adverse events. Journal of Clinical Orthopaedics and Trauma , 103144. [i] journal-cot.com Negayama, T., Nishimura, H., Murata, Y., Nakayama, K., Takada, S., Nakashima, H., ... & Uchida, S. (2025). Factors associated with treatment failure after hip arthroscopic surgery for the patient with femoroacetabular impingement secondary to Legg-Calvé-Perthes disease. Journal of ISAKOS , 100937. [ii] jisakos.com Wegman, S. J., Shaikh, H., Brodell Jr, J. D., Cook, P. C., & Giordano, B. D. (2025). Femoral head osteochondral allograft transplantation with and without simultaneous periacetabular osteotomy: a case series. Journal of Hip Preservation Surgery , hnaf037. [iii] ...

1679DiemerbroeckI

Fragments from the book Diemerbroeck I. Anatome corporis humani (1679). The author describes the pathology variants, function, topography and attachment of the ligamentum capitis femoris (LCF). The damage to the LCF in hip dislocation, symptoms and treatment are discussed. The text is similar to a paraphrase of Hegetor's work «On Causes» and Galen of Pergamon's commentary on Hippocrates' treatise «On Joints» ( 1745CocchiA ; 2020ArkhipovSV_ProlyginaIV ). Isbrand van Diemerbroeck uses many synonyms for LCF: nervus cartilaginosus, terete, teres, rotundum ligamentum, interius ligamentum. Quote p. 593. [Lat] CAPUT XIX. De Ossibus Femoris, & Cruris. Superius procesum crassum, versus coxendicis os prominentem, eique epiphyin rotundam & amplam impositam habet, sicque globosum femoris caput, valida cervice subnixum, constituit, quod cartilagine obductum in coxendicis acetabulum reconditur, in eoque duobus validis ligamentis detinetur: uno lato, crasso, & membranoso, ...

1844CruveilhierJ

Fragments from the book Cruveilhier J. The Anatomy of the Human Body (1844). The author discusses the anatomy and role of the ligamentum capitis femoris (LCF). Quote p. 94 The head (i, figs. 49 and 50) is the most regularly spheroidal of all the eminences in the skeleton, and forms nearly two thirds of a sphere. In the middle of it we observe a rough depression (k) of variable dimensions, which gives attachment to the round ligament. Quote pp. 159-162 COXO-FEMORAL ARTICULATION (fig. 76). Preparation. Remove with care all the muscles that surround the joint, preserving the reflected tendon of the rectus femoris. The psoas and iliacus muscles, the synovial capsule of which so often communicates with the articular synovial membrane, must be removed with particular care. After the fibrous capsule has been studied upon its external surface, a circular division should be made round its middle portion, for the purpose of uncovering the deep-situated parts. This articulation is the ...

1900BetheE

Fragments of t he book Pollux J. Onomasticum (166-76) edited by E. Bethe (1900). In Greek the author calls ligamentum capitis femoris (LCF) «ἰσχίον», and the concept of «ligament» is designated by the term «νεῦρον / ν εῦρα ». The term «ἰσχίον» was used by Rufus of Ephesus ( 2020ArkhipovSV_ProlyginaIV ). The fragment of the Onomasticum dealing with the LCF was quoted by Giovanni Filippo Ingrassia ( 1603IngrassiaeIP ) . See our commentary at the link: 1900 BetheE [Rus]. Quote 1. Βιβλίου Β. 186-187 [Grc] καιλεῖται δὲ καὶ τὸ νεῦρον τὸ σ υνέχον τὴν κοτύλην πρὸ σ τὸν μηρὸν ἰ σ χίον. ὁμώνυμον δ’ ἐ σ τιν αύτῷ καὶ τὸ ἄρθρον. καὶ τὸ μὲν [τῇ] κοτύλῃ [ σ υνηρμο σ μένον] ὀ σ τοῦν σ τρογγύλον μηροῦ κεφαλὴ, μηρὸ σ δὲ τὸ ἁπ ὸ το ύ το υ μὲχρ ι γονάτων μὲρο σ , … (original source: 1900BetheE , pp. 140-141 ) Quote 2. Βιβλίου Β. 234 [Grc] Νεῦρα δ’ ἐστι σύνδεσμος ὀστῶν εἴκων τε καὶ τεινόμενος, ἀφ ̓ ὧν κ...

1914JonesFW_MorrisH

We are publishing a chapter from the fifth edition of «Morris's Human Anatomy» (1914). A significant portion of it is dedicated to the ligamentum capitis femoris (LCF). The original text has been edited by Wood Jones. Particularly notable are the illustrations depicting the LCF. Some of them are improved drawings by the first author ( 1879MorrisH ). Quote pp. 276-284 1. THE HIP-JOINT Class. — Diarthrosis. Subdivision. — Enarthrodia. The hip is the most typical example of a ball-and-socket joint in the body, the round head of the femur being received into the cup-shaped cavity of the acetabulum. Both articular surfaces are coated with cartilage, that covering the head of the femur being thicker above where it has to bear the weight of the body, and thinning out to a mere edge below; the pit for the ligamentum teres is the only part uncoated, but the cartilage is somewhat heaped up around its margin. Covering the acetabulum, the cartilage is horseshoe-shaped, a...

1927HeyGrovesE

Content [i] Annotation [ii] Original text [iii] Illustrations [iv] Source & links [v] Notes [vi] Authors & Affiliations [vii] Keywords [i] Annotation Fragment from the article: Groves EH. Some contribution to the reconstruction surgery of the hip (1927). The author describes fixation of the femoral head by creating a ligamentum capitis femoris (LCF) from the joint capsule during reduction of congenital hip dislocation. The text in Russian is available at the following link: 1927HeyGrovesEH . [ii] Original text Quote, pp. 5 11-513. In the one method stability is secured by gouging out a deep acetabulum, but with a great sacrifice of the mobility of the joint; in the other free movement is retained in a loose joint, the stability of which is uncertain by constructing a new acetabular shelf. I still believe that by further improvement in the technique we shall be able...

The Birth of the Earth

The Birth of the Earth The solar system arose 4.5682-4.567 billion years ago (2013HazenRM). It has been found with an accuracy of 1% that the substance of the "Earth-Moon-meteorite" complex is 4.55-4.51 billion years old (2001DalrympleGB). The outlined segment is the immediate beginning of the arrangement of our Home in the Universe. One of the most important conditions for the emergence of life is liquid water (2002ChybaCF_PhillipsCB). Analysis of lithosphere particles aged 4406 (+14/-17) million years showed that they crystallized under conditions of increased water pressure (2012O'NeilJ_FrancisD). Accordingly, moisture was present no later than 160 million years after the "establishment" of the planet. The explanation for this is the proven presence of water in the accretion disk of the newborn Sun, which the Earth could have received in a volume equivalent to one to three oceans (2005DrakeMJ). According to a conservative estimate, half of the Earth's w...

1864MacalisterA

Content [i] Annotaction [ii] Original in English [iii] Translated into German [iv] Illustrations [v] Source & links [vi] Notes [vii] Authors & Affiliations [viii] Keywords [i] Annotaction Fragment of the article: Macalister A. On the anatomy of the ostrich (Struthio camelus) (1864). The author observed ligamentum capitis femoris (LCF) in an ostrich. Its strength is noted, and its shape is described. Translation into Russian is available at the link: 1864MacalisterA . [ii] Original in English Quote, p. 22 The articulations of the lower extremity present many points of mechanical importance. The first, or the hip, is an enarthrosis, surrounded by a capsule, loose, expanding inferiorly; the synovial membrane spreads over the great trochanter; a strong transverse band passes from the border of the lesser sciatic notch to the upper and posterior edge of the acetab...

IMAGINATIVE LITERATURE

Imaginative Literature (poems and prose with mention of LCF) 1742WesleyC. The poem «Wrestling Jacob». 1902RilkeRM . The poem: « Der Schauende » ( The Man Watching ). 2025ArkhipovSV. An Artistic Etude : The Origins of Biblical Legends from a Physician’s Perspective. BLOG CONTENT NEWS AND ANNOUNCEMENTS

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