Homo floresiensis

HOMO FLORESIENSIS

Homo floresiensis lived on the island of Flores (Indonesia) 190-50 Kya (2016SutiknaT_RobertsRG). The ancestor of this species is «suspected» to be the Asian subtype Homo erectus, which arrived from the mainland about 800 Kya (2009LyrasGA_DeVosJ). The anatomy of Homo floresiensis is less similar to Homo habilis (2008Gordon_WoodB).

Homo floresiensis Author: Cicero Moraes et al. (Arc-Team) ; source:wikimedia.org collection (license CC BY 4.0, no changes).

Among the discovered remains of a female Homo floresiensis (humanorigins.si.edu) there is a relatively well-preserved left pelvic bone (LB1/7). It has a «typically human» acetabulum (2009JungersWL_DjubiantonoT:Fig.3). The acetabulum has a complete fusion of the three bones that form it and is not hypoplastic (2012BrownP:Fig.4). The acetabular fossa is rounded and deep, continuing downwards and forwards as a wide acetabular notch. This area is the site of attachment and function of the ligamentum capitis femoris (LCF). The left femur (LB1/9) of Homo floresiensis is relatively well preserved. It is smaller than any modern human femur and is close in length to the reconstructed femur of Australopithecus afarensis (AL288-1, «Lucy»). On the head with a diameter of about 31 mm, a shallow fossa of the femoral head «for the ligamentum teres» is visualized (2009 JungersWL_DjubiantonoT). Thus, the species Homo floresiensis reliably had LCF, normally without congenital and dystrophic changes.

References

Sutikna T, Tocheri MW, Morwood MJ, Saptomo EW, Awe RD, Wasisto S, ... Roberts RG. Revised stratigraphy and chronology for Homo floresiensis at Liang Bua in Indonesia. Nature. 2016;532(7599)366-9. [researchgate.net]

Lyras GA, Dermitzakis MD, Van der Geer AAE, Van der Geer SB, De Vos J. The origin of Homo floresiensis and its relation to evolutionary processes under isolation. Anthropological Science. 2009;117(1)33-43. [jstage.jst.go.jp]

Gordon, A. D., Nevell, L., Wood, B. The Homo floresiensis cranium (LB1): Size, scaling, and early Homo affinities. Proceedings of the National Academy of Sciences. 2008;105(12)4650-5. [pmc.ncbi.nlm.nih.gov]

Brown P. LB1 and LB6 Homo floresiensis are not modern human (Homo sapiens) cretins. Journal of Human Evolution. 2012:62(2)201-24. [peterbrown-palaeoanthropology.net]

Jungers WL, Larson SG, Harcourt-Smith W, Morwood MJ, Sutikna T, Awe RD, Djubiantono T. Descriptions of the lower limb skeleton of Homo floresiensis. Journal of Human Evolution. 2009;57(5)538-54. [academia.edu]

Keywords

ligamentum capitis femoris, ligamentum teres, ligament of head of femur, doctrine, homo floresiensis

The original text in Russian is available at the link: Homo floresiensis

NB! Fair practice / use: copied for the purposes of criticism, review, comment, research and private study in accordance with Copyright Laws of the US: 17 U.S.C. §107; Copyright Law of the EU: Dir. 2001/29/EC, art.5/3a,d; Copyright Law of the RU: ГК РФ ст.1274/1.1-2,7

BLOG CONTENT

999–10 Kya

Comments

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 ...

BLOG CONTENT

T he ligament of the head of femur or ligamentum capitis femoris (LCF) is the key to a graceful gait and understanding the causes of hip joint diseases. We present promising scientific knowledge necessary for preserving health, to create new implants and techniques of treating degenerative pathology and damage of the hip joint. Project objective : preserving a normal gait and quality of life, helping to study of hip joint biomechanics, developing effective treatments for its diseases and injuries. In translating to English, the author is assisted by ChatGPT (version 3.5) and the Google Translate service . We're sorry for any flaws in the syntax. The meaning makes up for the imperfections! TABLES OF CONTENTS Acetabular Canal (Anatomy, topography and significance of the functioning area of the ligamentum capitis femoris) Acetabular Canal. Part 1. This article describes the space where the ligam...

Memorial Day

July 7 My Father's Day Vasily Dmitrievich Arkhipov (1936-2004) Tireless Worker of the Kindest Soul The engineering mindset inherited from him helped develop a Theory of ligamentum capitis femoris biomechanics , create mechanical models of the hip joint , and design walking machines with ligaments analogues . Jubilee Promo: Our Books at €1 Архипов С.В. Связка головки бедренной кости. Функция и роль в патогенезе коксартроза. Йоэнсуу: Издание Автора, 2023. [Arkhipov SV. The ligament of the head of femur. Function and role in the pathogenesis of coxarthrosis. Joensuu: Author's Edition, 2023. (In Russian)] Google Play Архипов С.В. Девятый месяц, одиннадцатый день: Рассуждение о XXXII главе книги Бытие. Йоэнсуу: Издание Автора, 2024. [Arkhipov S.V. The Ninth Month, Eleventh Day: A Reflection on Chapter XXXII of the Book of Genesis. Joensuu: Author’s Edition, 2024. (In Russian)] GooglePlay Архипов С.В. Дети человеческие: истоки библейских преданий в обозрении врача. Эссе, снабже...

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...

17c.Archangel_Cathedral

Archangel Cathedral of the Moscow Kremlin, fresco – «Jacob’s Wrestling with God» (1652 – 1666). 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 – Archangel Cathedral of the Moscow Kremlin, fr...

17th Century

17th Century Catalog of archived publications of the specified period 1600-1609 1600LaurensA The author writes about the anatomy, attachment, properties, shape and size LCF. 1603IngrassiaeIP The author writes about the topography of LCF, its geometric and mechanical properties. 1605BauhinC The author writes about the attachment, function, possible elongation and damage of the LCF. 1610-1619 1610RiolanJ The author discusses the localization, function, attachment and mentions rare synonyms of LCF. 1611BartholinC The author describes the anatomy, topography, geometric and mechanical properties of the LCF. 1611GuidiG The author briefly writes about the anatomy, function, and attachment of the LCF. 1614PlatterF The author notes the role of the LCF in fixing the femur in the acetabulum and the possibility of its lengthening. 1615BauhinC The author describes the consist...

1155Abenezra

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: Ezra AM. Ibn Ezra’s Commentary on the Pentateuch. Genesis (Bereshit) (1155). The author discusses the interpretation of the term gid ha-nasheh denoting ligamentum capitis femoris (LCF) in the book of Bereshit. The text in Russian is available at the following link: 1155Abenezra . [ii] Original text Bereshit 32:33 ( sefaria.org ) [iii] English translation Genesis 32:33 THE SINEW OF THE THIGH-VEIN. The meaning of the term gid ha-nasheh (the sinew of the thigh-vein) is known from the tradition received and transmitted to us by the Talmudic sages.49 No one but those lacking in understanding and knowledge of nature have any doubt as to its definition. The latter interpret gid (sinew) to refer to the penis and h...

LCF in 2026 (June)

LCF in 2026 (June ) (Quotes from articles and books published in June 2026 mentioning the ligamentum capitis femoris) Turner, A. H., Kernan, C. E., Laing, A., Pritchard, A. C., Stocker, M. R., Irmis, R. B., ... & Nesbitt, S. J. (2026). A new shuvosaurid (Archosauria, Poposauroidea) from the Late Triassic (Norian) Hayden Quarry of New Mexico, USA. Journal of Vertebrate Paleontology , e2618182. [i] tandfonline.com Wang, F., Mu, Y., Sun, J., & Chi, H. Traumatic necrosis of femoral head: a case report. Journal of Clinical Medicine Research. 2026;7(1)14-18. [ii] en.front-sci.com Sha, S. Y., Lang, X. X., Liu, Y., Li, C. B., & Yin, Q. F. L‐Capsulotomy and Anatomic Repair of Zona Orbicularis: Hip Arthroscopy Capsular Management for Femoroacetabular Impingement Syndrome. Arthroscopy Techniques , e70149. [iii] arthroscopyjournals.onlinelibrary.wiley.com Garlapaty, A. R....

LCF in 2026 (February)

L CF in 2026 ( February ) (Quotes from articles and books published in February 2026 mentioning the ligamentum capitis femoris) Longoni, A., Major, G. S., Arnold, S., Tomkins, S., Spessot, E., Loeffler, S., ... & Lim, K. S. (2026). Characterization of an Injectable Poly (vinyl alcohol)‐gelatin Hydrogel for Growth Factor Delivery in an Orthopedic Application. Advanced healthcare materials , e04224. [i] advanced.onlinelibrary.wiley.com Patil, A. Y., Babhulkar, S., Kimmatkar, N., Apte, A., Kadu, A., & Sonegaonkar, A. Anterior Trans-Muscular Approach to Hip (AP’s Access). SVOA Orthopaedics 2026 , 6 (1), 28-41. [ii] sciencevolks.com Zhou, R., Bian, Y., Cai, X., Sun, H., Lv, Z., Xu, Y., ... & Weng, X. (2026). Advances in the mechanism for steroid-induced osteonecrosis of the femoral head. Bone Research , 14 (1), 23. [iii] ...

Key Role of the LCF

In the experiments conducted on the pelvis-femur-muscle-ligaments model, we found that when the contralateral pelvic drop occurs, the ligament of the head of femur become maximally tense; simultaneously, there is relaxation and lengthening of the gluteus medius muscle; the pelvis spontaneously rotates towards the stance limb (forward), and the load on the hip joint decreases. Thanks to the functioning of the ligament of the head of femur the walking is smooth, rhythmic, and energy-efficient. Track Music: Blue Dot Sessions , Vittoro (CC BY-NC 4.0 DEED / fragment) "Take care of the ligament of the head of femur for yourself and your neighbor!" . . keywords: ligamentum capitis femoris, ligament of head of femur, ligamentum te...

Search This Blog