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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1886LesshaftP

According to the author, the ligamentum capitis femoris (LCF) reduces shocks and impacts of the articular surfaces. In addition, P. Lesshaft states an anatomical fact: the LCF is located vertically under the part of the acetabulum, which mainly bears the weight of the body. The text is prepared for machine translation using a service built into the blog from Google or your web browser. In some cases, we have added links to quotations about LCF available on our resource, as well as to publications posted on the Internet. Über die Vorriehtungen in den Gelenken zur Milderung der mit den Bewegungen verbundenen Stösse und Erschütterungen . Von P. Lesshaft, Professor der Anatomie in St. Petersburg. (Schluß.) Die Bewegungen im Kiefergelenke werden auch von einer hier liegenden Bandscheibe (Meniscus interarticularis) gemindert, aber außerdem von Syndesmosen, die als Gomphosis der Zähne und als Nahtverschmelzung (sutura) hier vorkommen und welche nichts anderes als eine (...

Tiktaalik roseae

TIKTAALIK ROSEAE The first truly tetrapod animal (Limbed tetrapods) is recognized as the lobe-finned fish Tiktaalik roseae (clade Elpistostegalia), discovered in rocks aged about 375 Ma (2006DaeschlerEB_JenkinsJrFA; 2008ShubinN; 2017ShubinN). Discoveries in recent years have allowed us to place the taxa of early tetrapodomorphs in the following order: Tinirau, Eusthenopteron, Megalichthys, Panderichthys, Qikiqtania, Tiktaalik, Elpistostege, Parmastega, Ventastega, Acanthostega, Elginerpeton, Ymeria, Ichthyostega (2022StewartTA_ShubinNH). The closest ancestor of Tiktaalik roseae, the fragments of the skeleton of which are relatively well preserved, is Panderichthys. Reconstruction of the prehistoric fish Pandericthys Author Tyler Rhodes; original in the wikipedia.org collection (license CC BY-SA 3.0, no changes). The shape of the skeleton of the pectoral fin and shoulder girdle suggests that Panderichthys rhombolepis "walked" (2006AhlbergPE_ClackJA). At the very least...

163-192Galen

Fragment from the treatise Galen. On anatomical procedures (Περὶ Ἀνατομικῶν Ἐγχειρήσεων, ca. 163-192). The author writes about the high resiliency and hardness of ligamentum capitis femoris (LCF), and also notes its connective function. See our commentary at the link: 163-192Galen [Rus], and 2020ArkhipovSV_ProlyginaIV . Quote [Grc] Περὶ Ἀνατομικῶν Ἐγχειρήσεων. Βιβλιον B. K εφ . ι ʹ . Αλλά χρή σε, καθάπερ επί της χειρός επεσκέψω τους συνδέσμους των οστών, ούτω και νυν επισκέψασθαι πασών των γεγυμνωμένων διαρθρώσεων, πρώτης μεν της κατ' ισχίον, εχούσης ένα μεν εν κύκλω σύνδεσμον, απάντων των άρθρων κοινόν, (ουδέν γάρ έστιν, ότω μή περιβέβληται τοιούτος σύνδεσμος,) έτερον δε τον διά του βάθους εν τη διαρθρώσει κατακεκρυμμένον, ος συνάπτει την κεφαλήν του μηρού τη κατ' ισχίον κοιλότητι, πάνυ σκληρός ών, ώς ήδη δύνασθαι λέγεσθαι νεύρον χονδρώδες. (original source: 1821KühnCG, pp. 328-329) [Lat] De Anatomicis Administrationibus. Liber II. Cap. X. Verum considerare te convenit, ut i...

1877MorrisH

An excerpt from the article by Morris H. Dislocations of the Thigh: their mode of occurrence as indicated by experiments, and the Anatomy of the Hip-joint (1877, pp. 161-170). The author noted that the ligamentum capitis femoris (LCF) is stretched during flexion, adduction, and external rotation. It was found that the LCF is always damaged in hip dislocations, is more often torn from the femur, and is rarely ruptured. Discussion of article see article 1877BrookeC . DISLOCATIONS OF THE THIGH: THEIR MODE OF OCCURRENCE AS INDICATED BY EXPERIMENTS AND THE ANATOMY OF THE HIP-JOINT. BY HENRY MORRIS, M.A., M.B., F.R.C.S., ASSISTANT SURGEON TO, AND LECTURER ON ANATOY1 AT, THE MIDDLESEX HOSPITAL. Received January 9th-Read February 13th, 1877. RECENTLY, whilst making various dissections of the hip-joint, the usually accepted doctrine that dorsal and ischiatic dislocations of the femur occur when the thigh is in a position of adduction appeared to me as very improbable, on anatomi...

1857HyrtlJ

The author discusses the anatomy, structure, and role of the ligamentum capitis femoris (LCF). Based on his own research, Josef Hyrtl asserts that the vessels of the LCF do not participate in supplying blood to the femoral head. The author highlights the high strength of the LCF and changes in congenital dislocations. Apparently, this work was the first to suggest that the LCF serves as a conductor of inflammatory processes and a cause of coxalgia. Hyrtl J. Handbuch der topagraphischen Anatomie und ihrer praktisch medicinisch-chirurgischen Anwendungen. Zweiter band. Wien: W. Braumüller, 1857. [fragment] Quote p. 410-412 c. Rundes Band des Schenkelkopfes. Einfluss desselben auf die Stellung des Beins bei Coxalgie. Ein verticaler, durch die Mitte der Pfanne und des Schenkelkopfes und bei richtiger Beckenneigung von aussen nach innen geführter Schnitt, trennt das runde Band in zwei gleiche Schenkel, einen vorderen und hinteren. Das Band ...

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., ...

Australian Aborigines

AUSTRALIAN ABORIGENES The first cuneiform texts appeared at the dawn of the Sumerian civilization in the period between 3500-3100 BCE. Due to the fact that before this interval there was no writing, an older text mentioning ligamentum capitis femoris (LCF) will never be found. Perhaps a drawing or pictogram of it will be found on a stone. Our assumption is inspired by the study of the rock art of the Australian Aborigines in the style of «X-ray art». Ancient artists, depicting animals and people, often drew bones, internal and external organs, and also designated joints. The minimum age of the early X-ray painting on the western Arnhem Land Escarpment in northern Australia is 5068-6636 years (2017JonesT_WesleyD). Here, in the area of the Burrungui (Nourlangie) and Madjedbebe (Malakunanja II) shelters, rich in rock art, human settlements existed 24-20 Kya (2017MaySK_SanzID). Modern comprehensive analysis indicates the beginning of the settlement of Australia and the territory near...

280-352Rava

Sayings of Rava extracted from the tractates Chullin and Horayot (Babylonian Talmud). Babylonian Talmud was written between about 450 - 550 in present-day Iraq (formerly Babylonia). The rabbi identifies the location and distal attachment site of the ligamentum capitis femoris (LCF) and demonstrates knowledge of its function. See our commentary at the link: 280-352Rava [Rus]. Quote 1. [Heb] Chullin 54b3 (original source: sefaria.org ) Quote 2. [Heb] Chullin 91a12 (original source: sefaria.org ) Quote 3. [Heb] Horayot 12a:16 (original source: sefaria.org ) Translation Quote 1. [Eng] Chullin 54b3 The Gemara addresses the matter itself: Rav Mattana says: This head of the femur that was completely dislocated renders the animal a tereifa. And Rava said: The animal is kosher, but if its sinew holding the bone in place is cut, it is a tereifa. The Gemara concludes: And the halakha is: Even if the sinew is cut, the animal is still kosher...

1851HyrtlJ

The author expresses a classic view on the functions of the ligamentum capitis femoris (LCF): a conductor of blood vessels and a limiter of adduction of the femur. J. Hyrtl believed that it was impossible to completely dislocate the hip without tearing the LCF. Hyrtl J. Lehrbuch der Anatomie des Menschen, mit Rücksicht auf physiologische Begründung und praktische Anwendung. Wien: W. Braumüller, 1851. [fragment] Quote p. 265 In der Höhle des Gelenks liegt das runde Band des Schenkelkopfes (Lig. teres), welches an der Incisura acetabuli entspringt, und bei richtiger Neigung des Beckens, senkrecht zur Grube des Schenkelkopfes aufsteigt. Es beschränkt dieses Band die Zuziehung des Schenkels, und schreibt zugleich den durch die Incisura acetabuli eindringenden Blutgefässen den Weg vor, den sie zum Oberschenkelkopfe zu nehmen haben. Da das Band, wenn es in die Höhle des Gelenkes vorragen würde, durch Reibung viel zu leiden hätte, so...

14c.Rudolf_von_Ems

Rudolf von Ems. Weltchronik, m iniature Jacob Wrestling with an Angel ( 14th cent., between 1350 and 1375). 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 ). Unknown author , m iniature Jacob Wrestling with an Ang...

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