Main Functions of LCF

Version: 20240419

MAIN FUNCTIONS OF LCF

1. Mechanical

2. Trophic

3. Sensory

4. Synthetic

5. Conductor

The mechanical function of LCF involves the ability to perform work, change the direction and magnitude of movements, and convert potential energy into kinetic energy, which manifests in effects. The mechanical function is realized by the stroma of LCF.

The trophic function of LCF involves providing nutrition and gas exchange in the medial part of the femoral head through the vascular system.

The sensory function of LCF involves synthesizing and transmitting information to the central nervous system about the magnitude of mechanical stresses in the stroma and attachment areas, as well as about the parameters of the intra-articular environment of the joint. The sensory function is provided by nerves and receptors of LCF, in conjunction with analyzers of the spinal cord and brain.

The synthetic function of LCF involves the production of synovial fluid, which reduces friction in the joint and participates in the nutrition and gas exchange of the articular cartilages. It is provided by the synovial membrane.

The conductor function of LCF involves supporting and directing nerves, blood vessels, and lymphatic vessels.

Effects of the Mechanical Function of LCF

1. Autolateralization effect

2. Autorotation effect

3. Autostabilization effect

4. Joint locking effect

Autorotation effect: rotation of the pelvis forward relative to the supporting leg.

Autostabilization effect: inclination of the pelvis forward and its adoption of a specific stable position in the sagittal plane.

Autolateralization rffect: pressing the acetabulum of the pelvis against the femoral head.

Joint locking effect: locking of the hip joint in the frontal plane and its transformation into an analogue of a second-class lever.

The effects of LCF are described in more detail in our dissertation research and abstract 2012ArkhipovSV (text, presentation).

ALTERNATIVE TYPES OF LCF FUNCTIONS

1. Physical

2. Biochemical

3. Biological

4. Informational

It is proposed to subdivide the functions of LCF into hierarchical units similar to the elements of the taxonomy of living organisms: type, order, family, genus, species. The identification of alternative functions is based on the participation of LCF in various processes occurring in the body: physical, chemical, biological, and informational.

Keywords:

ligamentum capitis femoris, ligament of head of femur, round ligament, ligamentum teres, classification, functions, effects

In translating to English, the author is assisted by ChatGPT (version 3.5) and the Google Translate service.

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LCF in 2026 (September)

LCF in 2026 (September ) (Quotes from articles and books published in September 2026 mentioning the ligamentum capitis femoris) Goetz, J. E., Hockman, J., & Willey, M. C. (2026). Rabbit models of hip dysplasia: a narrative review. Laboratory animal research , 42 (1), 32. [i] link.springer.com Kahana-Rojkind, A. H., Strok, M. J., Walsh, E. G., Quesada-Jimenez, R., Kuhns, B. D., & Domb, B. G. (2026). Factors Associated With Return to Sport at Minimum 10-Year Follow-up in Athletes With Borderline Hip Dysplasia Undergoing Hip Arthroscopy With Capsular Plication. Orthopaedic Journal of Sports Medicine , 14 (9), 23259671261451218. [ii] journals.sagepub.com Stanard, I., Almhanna, H., Al-Mahmodi, A. M. M., Kilroy, D., & Kumar, A. H. (2026). Comparative Analysis of Vascular Density in the Femoral Head Ligament of the Dog, Sheep, and Goat. [iii] oajr.org , researchgate.net Hirt, J., Roshardt, ...

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...

1785SandifortE

Fragments from the book Sandifort E. Descriptio ossium hominis. (1785). The author briefly writes about the attachment of the ligamentum capitis femoris (LCF). Quote p. 104 [Lat] Os ischium… … Qua spectat pelvim (a) os ischion æquabile est, modice cavatum, ab exteriore profunde sinuatum (b). Sinus hic, quem acetabulum vocant, maximus, sere rotundus, est, dividique potest in partes duas, alteram semilunarem quodammodo, cartilagine tectam (c), hinc æquabilem, alteram altius excavatam, asperam (d), glandulæ muciparæ sedem præbentem, & educentem ligamentum teres, quod capiti ossis femoris infigitur (e). … Quote p. 108-109 [Lat] Femoris os … … Caput magnum, globosum, cartilagine lævi incrustatum, oblique positum (b), id est, sursum introrsumque tendens, magnitudine & figura cum acetabulo (i) congruens, intra illud admittitur, illique alligatur per ligamentum teres, quod firmiter adhæret ab altera parte acetabulo, ab altera sinui profundo, inæquabili, qui in dicto capite est (k...

18c.FontebassoF

Fontebasso F, painting, Jacob wrestling with the angel (18th cent.). 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 ). Francesco Fontebasso – Jacob Wrestling with the Angel (18th cent.); original in the matthiesenga...

LCF in 2026 (August)

LCF in 2026 (August ) (Quotes from articles and books published in August 2026 mentioning the ligamentum capitis femoris) Maldonado, D. R., Schab, A. R., & Domb, B. G. (2026). Improvement in Patient‐Reported Outcomes, High Rate of Return to Sport, and Secondary Surgery Rate Ranging From 0% to 9.8% After Hip Arthroscopy in Dancers and Athletes in Flexibility Sports: A Systematic Review. Arthroscopy, Sports Medicine, and Rehabilitation , e70020. [i] arthroscopyjournals.onlinelibrary.wiley.com Klingele, K., & Strub, D. (2026). Author Response: Considerations and Challenges in Open Reduction With Ligamentum Teres Reconstruction for Pediatric Developmental Dysplasia of the Hip. Journal of Pediatric Orthopaedics . [ii] ovid.com Quesada‐Jimenez, R., Rana, K., Strok, M. J., Kahana‐Rojkind, A. H., Burt, A. K., Sugarman, E. P., & Domb, B. G. (2026). Dual Labral and Ligamentum Ter...

Plaque

Memorial plaque, bas-relief – Jacob wrestling with an angel. Variant of 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 ( 2024 АрхиповСВ. Девятый месяц, одиннадцатый день ). https://www.ancientsculpturegallery.com/jacob-wrestling-with-the-angel-plaque.html...

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 func...

Catalog. Arthroscopic reconstruction

Introduction Currently, ligamentum capitis femoris (LCF) reconstruction using arthroscopic technologies is considered promising. According to the literature available to us, the first such operation was performed by Marc J. Philippon, which he first reported on in May 2006 (2006PhilipponMJ). Until now, reconstruction of LCF using minimally invasive technologies has not yet become widespread. The long-term results of arthroscopic LCF repair are still uncertain due to insufficient number of surgical procedures performed and short follow-up period (2014O'DonnellJM_SinghPJ). Catalog Arthroscopic LCF reconstruction and discussion of technique Abibe RB, Rahal SC, dos Reis Mesquita L, Doiche D, da Silva, JP, Mamprim, MJ, Pinho RH, Battazza A, Alves CEF, Saunders WB. Ligamentum teres reconstruction using autogenous semitendinosus tendon with toggle technique in rabbits. PeerJ. 2023;11:e14777. doi.org/10.7717/peerj.14777 [ peerj.com , peerj.com(PDF) ] Al'Khafaji, ...

Great Compilation. Chapter 10

English version of the article: Архипов СВ. Книга Берешит как великая компиляция текстов и смыслов Второго переходного периода Египта: пилотная культурологическая, медицинская, археологическая и текстологическая экспертиза преданий против традиционной атрибуции. Введение. О круглой связке бедра . 14.02.2026 . The text in Russian is available at the following link: 2026АрхиповСВ . The Book of Genesis as a Great Compilation of Texts and Meanings from the Second Intermediate Period of Egypt: A Pilot Culturological, Medical, Archaeological, and Textological Examination of the Legends versus Traditional Attribution. Chapter 10 By Sergey V. Arkhipov, MD, PhD CONTENT [i] Abstract [ii] Book of Genesis. Chapter 10 Analysis [iii] Notes to Chapter 10 [iv] AI Agent's Conclusion [v] Content [vi] External links [vii] Application [i] Abstract The Book of Genesis (Bereshith) wa...

Great Compilation. Chapter 26

English version of the article: Архипов СВ. Книга Берешит как великая компиляция текстов и смыслов Второго переходного периода Египта: пилотная культурологическая, медицинская, археологическая и текстологическая экспертиза преданий против традиционной атрибуции. Введение. О круглой связке бедра . 14.02.2026 . The text in Russian is available at the following link: 2026АрхиповСВ . The Book of Genesis as a Great Compilation of Texts and Meanings from the Second Intermediate Period of Egypt: A Pilot Culturological, Medical, Archaeological, and Textological Examination of the Legends versus Traditional Attribution. Chapter 26 By Sergey V. Arkhipov, MD, PhD CONTENT [i] Abstract [ii] Book of Genesis. Chapter 26 Analysis [iii] Notes to Chapter 26 [iv] AI Agent's Conclusion [v] Content [vi] External links [vii] Application [i] Abstract The Book of Genesis (Beresh...

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