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.

BLOG CONTENT

Set of Classifications

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Set of Classifications

General Classification of LCF Pathology Version : 20240420 Annotation Analysis of literature data and our own morphological observations allowed us to propose a General Classification of LCF Pathology. Introduction In Russia, the initial attempts to classify pathology of the ligamentum capitis femoris (LCF) were made by morphologists. L.I. Gaevskaya distinguished three types of LCF: 1) long and thick (length 41–51 mm, thickness 5 mm), 2) short and thin (length 10–20 mm, thickness 1 mm), 3) long and of small thickness (length 43–45 mm, with a thickness of 3 mm, and length 28–30 mm with a thickness of 4–5 mm) (1954 ГаевскаяЛИ ). V.V. Kovanov, A.A. Travin identified three varieties of histological structure of LCF: 1) with a predominance of loose connective tissue; 2) with a predominance of dense connective tissue; 3) with a uniform distribution of loose and dense connective tissue ( 1963 КовановВВ _ ТравинАА ). The development of arthroscopic surgery has made it possible to i...

Topography of the Acetabular Canal

Version : 20250728 Topography of the Acetabular Canal Side Femoral (lateral) Pelvic (medial) Contents Synovial fluid Ligamentum capitis femoris (LCF) White adipose tissue Loose connective tissue Synovial membrane Transverse acetabular ligament Arteries Veins Nerves Lymphatic vessels Sections Peripheral section Central section Subsynovial section Suprasynovial section Peripheral Section Entrance foramen -- Upper edge -- Lower edge -- Anterior edge -- Posterior edge External segment (subligamentous) - Superior wall - Inferior wall - Posterior wall - Anterior wall Internal segment (extraligamentous) - Subsynovial part (tier) -- Superior wall -- Inferior wall -- Posterior wall -- Anterior wall - Suprasinovial part (tier) -- Superior wall -- Inferior wall -- Posterior wall -- Anterior wall Central Section Iliac recess Ischial recess Subsynovial part (tier) - Outer margin - Medial wall - Lateral wall - Anteroinferior wall - Posteroinferior wall - Supra...

LCF in 2025 (July)

LCF in 2025 ( July ) (Quotes from articles and books published in July 2025 mentioning the ligamentum capitis femoris.) Tekcan, D., Bilgin, G., & Güven, Ş. Evaluation of Risk Factors for Developmental Dysplasia of the Hip. HAYDARPAŞA NUMUNE MEDICAL JOURNAL , 65 (2), 99-103. [i] jag.journalagent.com Domb, B. G., & Sabetian, P. W. (2025). Greater Trochanteric Pain Syndrome: Gluteal Tendinopathy, Partial Tear, Complete Tear, Iliotibial Band Syndrome, and Bursitis. In Orthopaedic Sports Medicine (pp. 1-17). Springer, Cham. [ii] link.springer.com Kuhns, B. D., Becker, N., Patel, D., Shah, P. P., & Domb, B. G. (2025). Significant Heterogeneity in Existing Literature Limits Both Indication and Outcome Comparability Between Studies Involving Periacetabular Osteotomy For Acetabular Dysplasia With or Without Arthroscopy Despite Improvement for Both: A Systematic Review. Arthroscopy . [iii] ...

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...

LCF in 2025 (June)

LCF in 2025 ( June ) (Quotes from articles and books published in June 2025 mentioning the ligamentum capitis femoris) Kuhns, B. D., Kahana-Rojkind, A. H., Quesada-Jimenez, R., McCarroll, T. R., Kingham, Y. E., Strok, M. J., ... & Domb, B. G. (2025). Evaluating a semiquantitative magnetic resonance imaging-based scoring system to predict hip preservation or arthroplasty in patients with an intact preoperative joint space. Journal of Hip Preservation Surgery , hnaf027. [i] academic.oup.com Iglesias, C. J. B., García, B. E. C., & Valarezo, J. P. P. (2025) CONTROLLED GANZ DISLOCATION. EPRA International Journal of Multidisciplinary Research (IJMR) - Peer Reviewed Journal. 11(5)1410-13. DOI: 10.36713/epra2013 [ii] researchgate.net Guimarães, J. B., Arruda, P. H., Cerezal, L., Ratti, M. A., Cruz, I. A., Morimoto, L. R., ... & Ormond Filho, A. G. (2025). Hip Microins...

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 ...

1543(b)VesaliusA

Fragment from the book Vesalius A. Humani corporis fabrica librorum Epitome (1543). The author describes the attachment and shape of the ligamentum capitis femoris (LCF). Our brief commentary is available at the link: 1543(b)VesaliusA [Rus]. Quote. [Lat] Caput. II. De ossium ac cartilaginvm ligamentis, et musculis arbitrarij motus instrumentis Ex femoris superiori capite teres ligamentum in coxendicis acetabulum insertur. Translation [Eng] Quote. Chapter II. On the ligaments of the bones, cartilages, and muscles that perform voluntary movements. From the upper head of the femur, the round ligament is inserted into the acetabulum of the hip joint. Jan Stephan van Calcar (ca. 1543) External links Vesalius A. Humani corporis fabrica librorum Epitome. Basileae: Ex officina Joannis Oporini, Anno MDXLIII Mense Iunio [June, 1543]. [ books.google ] Authors & Affiliations Andreas Vesalius (And ries van Wezel, 1514-1564) physician, anatomist, professor at the Univers...

Online Journal «ABOUT ROUND LIGAMENT OF FEMUR», April 2025

The journal is dedicated to the ligamentum capitis femoris (LCF) and related topics. About the Journal »»» . The online journal « About Round Ligament of Femur » was created based on the scientific blog of the same name. The resource is the English-language part of the project: ONLINE JOURNAL: Ligamentum capitis femoris . Updates: As new materials are prepared. Mission : Popularization and preservation of knowledge about LCF, as well as promoting its practical application. Main goal: Improvement of diagnosis, treatment, and prevention of injuries and diseases of the hip joint. Publisher: Arkhipov S.V., independent researcher, P...

344-411Rufinus Aquileiensis

A fragment of the manuscript of the translation of Josephus Flavius' Antiquities of the Jews ( Ἰουδαϊκὴ ἀρχαιολογία / De antiquitate iudaica) into Latin by Rufinus Aquileiensis. The translator worked approximately between 344 and 411 in the Roman Empire. His work was rewritten between 1150 and 1199 in Northern France. In Josephus's translation of Antiquities of the Jews, ligamentum capitis femoris (LCF) is referred to as «neruum». The selected fragment deals with the LCF of an animal and discusses a biblical episode of its damage in a human. See our commentary at the link: 344-411Rufinus Aquileiensis [Rus]. T he original text: 93-94JosephusF . Quote [ Lat] De antiquitate iudaica. Liber primus (original source: 1150JosephusF, p. 22, fragment) Translation [Eng] Antiquities of the Jews. Book 1. 20.2 When Jacob had made these appointments all the day, and night came on, he moved on with his company; and, as they were gone over a certain river called Jabboc, Jacob was left behi...

Online Journal «ABOUT ROUND LIGAMENT OF FEMUR», June 2025

The journal is dedicated to the ligamentum capitis femoris (LCF) and related topics About the Journal »»» . The online journal « About Round Ligament of Femur » was created based on the scientific blog of the same name. The resource is the English-language part of the project: ONLINE JOURNAL: Ligamentum capitis femoris . Updates: As new materials are prepared. Mission : Popularization and preservation of knowledge about LCF, as well as promoting its practical application. Main goal: Improvement of diagnosis, treatment, and prevention of injuries and diseases of the hip joint. Publisher: Arkhipov S.V., independent researc...

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