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ABOUT THE PROJECT

 

The blog is dedicated to the ligament of the head of femur, known in Latin as ligamentum capitis femoris (LCF). In our opinion, this is a crucial element of the hip joint, found in the majority of vertebrates, including humans. This structure is significant for the functioning not only of the lower limb but the entire musculoskeletal system. LCF is involved in walking and helps maintain certain types of upright posture. It connects the pelvis and femur, restricts movements, and redistributes the load in the hip region. Dysfunction, displacement of attachment points, and pathological changes in LCF are the initial links in the pathogenesis of hip osteoarthritis, congenital hip dysplasia, congenital dislocation of the hip, aseptic (avascular) necrosis, and femoral head osteochondropathy. Preventing or interrupting the development of these disabling conditions could be achieved through successful therapeutic and surgical treatment of LCF pathology with normalizing its functioning.

The creation of blog articles we are guided by a scientific approach, involving references to primary sources and verified information. Unlike conventional journal publications, our works imply constant updates. This is because the study of LCF continues to this day, despite its beginning was in Mesopotamia 2000-1600 years before the common era. New facts can not only complement previously written material but also influence conclusions. We advocate for the continuous improvement of the style and form of articles, their correction, expansion, and fragmentation. Such dynamic interactive works, in our view, are a requirement of modern natural science and may soon become a standard. Each blog page has a comments section, providing an opportunity to express opinions. It is expected that specialists knowledgeable in the subject will make use of this. Exchanging views will enhance the exploration of the topic and encourage participants in the discussion to conduct their own research. Questions and critical remarks to the author are welcomed!

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:

Блог посвящен связке головки бедра, на латинском языке именуемой ligamentum capitis femoris (LCF). По нашему мнению, это важный элемент тазобедренного сустава, который обнаруживается у подавляющего числа позвоночных, включая человека. Данная анатомическая структура значима для функционирования не только нижней конечности, но всей опорно-двигательной системы. LCF задействована при ходьбе и участвует в поддержании отдельных вертикальных поз. Она соединяет таз и бедро, ограничивает движения, а также перераспределяет нагрузку в тазобедренной области. Дисфункция, дислокация мест крепления и патологические изменения LCF – начальные звенья патогенеза коксартроза, дисплазии тазобедренного сустава, врожденного вывиха бедра, асептического некроза и остеохондропатии головки бедренной кости. Предотвратить или прервать развитие этих инвалидизирующих заболеваний могло бы успешное терапевтическое и хирургическое лечение патологии LCF с нормализацией ее функционирования.

При создании статей блога главенствует научный подход, предполагающий ссылки на первоисточники и проверенные сведения. В отличие от общепринятых журнальных публикаций, наши работы подразумевают обновление. Это обусловлено тем, что изучение LCF продолжается до сих пор, несмотря на то, что началось еще в Месопотамии 2000-1600 лет до современной эры. Новые факты способны не только дополнить ранее написанный материал, но и повлиять на выводы. Мы сторонники постоянного улучшения стиля и формы статей, их исправления, увеличения и фрагментации. Подобные динамические интерактивные работы, с нашей точки зрения, – требование современного естествознания и, вероятно, скоро будут стандартом. На каждой странице блога существует раздел комментариев, где представляется возможность высказать мнение. Думается, что этим воспользуются специалисты, сведущие в теме. Обмен суждениями позволит лучше раскрыть тему и будет стимулировать участников дискуссии к собственным исследованиям. Вопросы и критические замечания автору приветствуется!

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NEWS 2024-2025

  New publications of our resource   in 2024-2025 January 01, 2026 LCF in 2025 (December)   Q uotes from articles and b ooks published in December 2025 mentioning the LCF.  1946SpychalskiJ  Painting, Drawing depicting the circumstances and mechanism of the LCF injury.   1975BorsosM Painting, Drawing depicting the circumstances and mechanism of the LCF injury.  13c.Soligalich  Icon, Drawing depicting the circumstances and mechanism of the LCF injury. December 31, 2025 Tweet of December 31, 2025   Online Journ al «ABOUT R OUND LIGAMENT OF FEMUR», December 2025 December 30, 2025 Tweet of December 30, 2025 December 29, 2025 Tweet of Decembe r 29, 2025    Arkhipov SV. Improving Postoperative Comfort    (facebook) December 28, 2025 Arkhipov SV.  Improving Postoperative Comfort and Increasing the Reliability of Hip Prostheses by Supplementing with Artificial Ligaments December 23, 2025 University_of_G uelph(...

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., ...

1750DrakeJ

  Fragment from the book Drake J. Anthropologia nova: or, a new system of anatomy. … The Third Edition Corrected. (1750). The author does not name the ligamentum capitis femoris (LCF), but accurately describes its appearance (short, thick, and round), and indicates the attachment points. Quote p. 432 CHAP. VIII. Of the Bones and Muscles of the Thigh, Leg and Foot … The first of these is the largest and most prominent, and has a large round Head, capp’d with a Cartilage, which is receiv’d into the Acetabulum or Socket, at the Ischium or Os Coxendicis; to which it is fastned by two Ligaments: One broad, thick, and membranous, surrounding the whole Edge of the Acetabulum, and Head of the Bone: The other short, thick, and round, springing from the bottom of the Acetabulum, by the side of the Mucilaginous Gland, (which is here the most considerable of the whole Body) and is inserted into the middle of the Cartilaginous Head. The Epiphysis, or Neck of the Bone on which this Head is seate...

1869MivartG

  The author discusses his observations of LCF absence in chimpanzees and orangutans.   IX. Contributions towards a more complete knowledge of the Skeleton of the Primates . By Sr. George Mivart, F.L.S., Lecturer on Comparative Anatomy at St. Mary's Hospital. Part I. The Appendicular Skeleton of Simia. Read December 13th, 1866. [Pirates XXXV. to XLIII.] Quote p. 200 It is commonly asserted that the ligamentum teres is absent in. the Orang, as also the pit for its reception on the head of the femur (1). I find no trace of the latter in either femur of any specimen, with one exception (2); but in that. exceptional specimen each femur (Pl. XL. fig. 7 i) exhibits a small but distinct depression on its head in the place occupied in other forms by the pit for the round ligament. This absence has not, as far as I am aware, been noticed in Man or the Chimpanzee; but. in the Gorilla I have sometimes been unable to detect any trace of such a fossa on the head of the femu...

Localization of LCF Pathology

  Version : 20240418 Localization of LCF pathology is classified based on the anatomical-topographical principle. It is assumed that the LCF does not end near the attachment site but penetrates into it. LOCALIZATION OF LCF PATHOLOGY 1. Middle part 2. Distal end 3. Proximal end 4. Distal attachment area 5. Proximal attachment area 6. Medial surface 7. Lateral surface 8. Anterior edge 9. Posterior edge 10. Transsynovial 11. Subsynovial 12. Total Lesion The medial surface faces the bottom of the acetabulum. The lateral surface faces the femoral head. Transsynovial pathology implies changes including or only involving the synovial membrane. Subsynovial pathology is localized exclusively beneath the synovial membrane of LCF. Pathology can involve multiple parts of LCF, for example, damage to the distal end and proximal attachment area in a transacetabular fracture.   The distal part of LCF attaches directly to the bone of fovea capitis femoris. Along...

2025ChatGPT. Baroque

  2025ChatGPT, painting «Jacob Wrestling with the Angel in Baroque Style». Depiction of 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 ).     Jacob Wrestling with the Angel in Baroque Style. Created in collaboration with the ChatGPT langua...

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...

1823GerdyPN

  The author mentions their observation of the displacement of the femoral head from the acetabulum outwards when the ligamentum capitis femoris (LCF) is stretched. Continuing experimental research, P.N. Gerdy discovered that the LCF, when stretched during adduction, also displaces the femur in the caudal direction (see 1833GerdyPN ). The translation from German was done in collaboration with ChatGPT 3.5.   Gerdy PN. Recherches, discussions, et propositions d'Anatomie, de Physiologie, de Pathologie, etc. Paris: Béchet, 1823. [fragment] Quote pp. 9 5 PROPOSITIONS La luxation du fémur en haut et en dehors est plus facile que celle en bas et en dedans, surtout parce que le ligament interarticulaire tend à s enrouler autour de la tête du femur, dans une violente adduction et qu il tire l os en dehors. Je m en suis assuré par l observation directe.   ASSUMPTIONS Dislocating the femur upwards and outwards is easier...

1898AshhurstJ

    Report Ashhurst J. Tuberculosis of the hip joint (1898). The author discusses the function of the LCF as a supporting element of the body, its role in the development of deformity of the hip joint, reducing pressure and stress in the femoral head. The most notable quotes:  «Of course, the whole weight of the body is not sustained by this ligament, but mostly by the head of the femur in more or less close contact with the cotyloid cavity; but this ligament, I believe, serves to diminish the pressure of the pelvis upon the head of the bone, and to lessen strain. The position of the ligamentum teres is like that of the old-fasioned leather springs which used to be found in stage- coaches, the body of the coach being balanced upon two broad strong bands of leather. The pelvis is to a certain extent similarly balanced upon these ligaments on either side, which are attached to the heads of the thigh- bones, and then pass down to the lower edges of the cotyloid cavities. I b...

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...