TESTING A PROTOTYPE OF A NEW GENERATION ENDOPROSTHESIS

Second version of the hip joint model: demonstration of the most important effects of the functioning of the ligamentum capitis femoris (LCF).
Pt. 1. https://kruglayasvyazka.blogspot.com/2024/06/lcf_17.html ;
Pt. 2. https://kruglayasvyazka.blogspot.com/2024/06/blog-post_17.html
In the new generation of endoprostheses, the LCF analogue will play a key role.

#ligamentum_teres #hip #biomechanics #ligamentum_capitis_femoris #endoprosthesis
Publication in the facebook group 04/19/2025.

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Test catalog of the LCF pathology

Test catalog of the ligamentum capitis femoris pathology By Sergey V. Arkhipov, MD, PhD CONTENT [i] Abstract [ii] Introduction [iii] Testing in the supine position [iv] Testing in a standing position [v] Gait study [vi] References [vii] Application [i] Abstract A description of tests for the detection and differential diagnosis of ligamentum capitis femoris (LCF) pathology is presented. [ii] Introduction One of the first studies devoted to the diagnosis of LCF injury demonstrated a variety of symptoms: groin pain, hip stiffness, sometimes long-standing minimal clinical findings, or signs similar to osteoarthritis (1997GrayA_VillarRN). More than a decade later, researchers concluded: "Unfortunately, there is no specific test for detecting LCF tears." The signs known at that time were nonspecific and were also observed in other intra-articular pathologies of the hip joint (2010CerezalL_Pérez-CarroL). The a...

Who, When, and Where Wrote the Book of Genesis?

Who, When, and Where Wrote the Book of Genesis? A Medical Hypothesis By Sergey V. Arkhipov, MD, PhD & Lyudmila N. Arkhipova, BSN CONTENT [i] Abstract [ii] Introduction [iii] Egyptian physician [iv] Asian diviner [v] Conclusion [vi] References [vii] Application [i] Abstract The Book of Genesis is an example of an ancient literary text that contains important medical insights. We propose that it was written in northern Egypt in the late 17th century BCE, approximately ten years after the Minoan eruption. The protograph likely emerged from the collaboration between an Asiatic seer, who rose to the rank of an Egyptian official, and an Egyptian physician-encyclopedist. By refining its dating and authorship, this hypothesis positions Genesis as a credible source of medical and historical data, thereby enhancing its value for interdisciplinary research. [ii] Introduction According to Rabbinic Judais...

1836-1840PartridgeR

«Prof. Partridge in his lectures on anatomy at King's College was accustomed to compare the Ligamentum Teres, in its function, to the leathern straps by which the body of a carriage is suspended on springs » ( 1874SavoryWS ). Perhaps Nikolai Pirogov listened to these lectures ( 1859PirogoffN ). The analogy that Richard Partridge used could have arisen after reading the monograph Bell J. The Principles of Surgery (1801) . In it, the author depicted a cart and a pelvis resting on the head of one and two femurs. However, there is no mention of ligamentum capitis femoris (LCF) in the chart descriptions. References Savory WS. On the use of the ligamentum teres of the hip joint. J Anat Physiol. 1874;8(2)291-6. [ ncbi.nlm.nih.gov , archive.org ] Pirogoff N. Anatome topographica sectionibus per corpus humanum congelatum triplici directione ductus illustrate. Petropoli: Typis Jacobi Trey, 1859. [ books.google , archive.org ] ...

18th Century

18th Century Catalog of archived publications of the specified period 1700-1709 1705PetitJL The author writes about anatomy, role, and damage of the LCF in hip dislocation. 1705RuyschF The author describes the anatomical preparation containing the LCF, notes its areas of attachment, geometric and mechanical properties. 1706PolluxJ The author refers to LCF as "νεῦρον" and also points out the synonym "ἰσχίον". 1709PetitJL The author discusses the anatomy, role and damage of the LCF in hip dislocation, and also mentions the principle of treatment. 1710-1719 1715MunnicksJ The author describes the attachment, shape, role of the LCF, and discusses subluxation of the hip. 1717HermannD The author indicates the distal area of attachment of the LCF and uses a rare synonym. 1720-1729 1720RuyschF The author draws attention to the well-developed blood supply of the acetabular fossa, as well as the ...

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...

2025ChenJH_AcklandD

The article by Chen JH, Al’Khafaji I, Ernstbrunner L, O’Donnell J, Ackland D. Joint contact behavior in the native, ligamentum teres deficient and surgically reconstructed hip: A biomechanics study on the anatomically normal hip (2025). The authors experimentally demonstrated the role of the ligamentum capitis femoris (LCF) in unloading the upper sector of the acetabulum and the femoral head. The text in Russian is available at the following link: 2025ChenJH_AcklandD . Joint contact behavior in the native, ligamentum teres deficient and surgically reconstructed hip: A biomechanics study on the anatomically normal hip By Chen JH, Al’Khafaji I, Ernstbrunner L, O’Donnell J, Ackland D. CONTENT [i] Abstract [ii] Introduction [iii] Materials and methods [iv] Results [v] Discussion and Conclusion [vi] References [vii] Application [i] Abstract Background The ligamentum teres is known to contribute to hip joint st...

ABOUT THE AUTHOR

The blog is managed and administered by Sergey Vasilyevich Arkhipov, a candidate of medical sciences, general surgeon, and orthopedic traumatologist (orthopedic surgeon) of the highest qualification, as well as a medical expert. The author graduated from the State Medical Institute in 1992 (Smolensk, Russia) and defended his dissertation at the Russian University of Friendship of Peoples (Moscow). He studied at the Central Institute of Traumatology and Orthopedics (Moscow) and the Russian Research Institute of Traumatology and Orthopedics (St. Petersburg). He also had internships at the Hannover Medical School (Medizinischen Hochschule Hannover). Sergey Arkhipov has experience working in the orthopedic department of a regional clinical hospital, trauma departments of major city medical institutions, a regional burn center, a trauma center, a surgical department of a district hospital, state polyclinics, and private medical clinics. He has been involved in research activities,...

2015HainingZ

Invention (Patent): Haining Z . Artificial total hip joint prosthesis with axially restrained anti-dislocation structure. CN105105873A (2015). Machine translation from Chinese. CN105105873A China Inventor: Zhang Haining Current Assignee: Shanghai longhui Medical Technology Co., Ltd. Worldwide applications 2015 CN Application CN201510360141.9A events: 2015-08-07 Application filed by Affiliated Hospital of University of Qingdao 2015-08-07 Priority to CN201510360141.9A 2015-12-02 Publication of CN105105873A 2017-06-20 Application granted 2017-06-20 Publication of CN105105873B Status: Active 2035-08-07 Anticipated expiration Artificial total hip joint prosthesis with axially restrained anti-dislocation structure Zhang Haining Abstract The invention provides a kind of artificial full-hip joint prosthese with axially limitation anticreep bit architecture, including acetabular component, liner, femoral head prosthesis, liner is located in the g...

Hip Osteoarthritis. Pathogenesis

An original view on the pathogenesis of osteoarthritis of the hip joint. Coxarthrosis is a disease that can develop either independently or against the background of other pathological conditions: congenital hip dislocation, Perthes' disease, aseptic necrosis of the femoral head, and some others. From our point of view, the basis of its pathogenesis, as a rule, is the pathology of ligamentum capitis femoris (LCF). This may involve its complete or partial damage, changes in size, mechanical properties, and the localization of attachment areas. The pathogenesis of coxarthrosis is a clear illustration of the Law of Bioinduction that we have established. LCF dysfunction results in disruption of normal hip mechanics. In the single-support period of the step and the single-support orthostatic position, it begins to function not as a lever of the second kind, but as a lever of the first kind. Accordingly, only the upper sectors of the femoral head and acetabulum are constantly loaded; ...

Catalog. LCF of Extinct Species

Discussion of the LCF and morphological signs of its existence in extinct species. Funston, G. F. (2024). Osteology of the two-fingered oviraptorid Oksoko avarsan (Theropoda: Oviraptorosauria). Zoological Journal of the Linnean Society, zlae011. [ academic.oup.com ] Hafed, A. B., Koretsky, I. A., Nance, J. R., Koper, L., & Rahmat, S. J. (2024). New Neogene fossil phocid postcranial material from the Atlantic (USA). Historical Biology, 1-20. [ tandfonline.com ] Kuznetsov, A. N., & Sennikov, A. G. (2000). On the function of a perforated acetabulum in archosaurs and birds. PALEONTOLOGICAL JOURNAL C/C OF PALEONTOLOGICHESKII ZHURNAL, 34(4), 439-448. [ researchgate.net ] Romer, A. S. (1922). The locomotor apparatus of certain primitive and mammal-like reptiles. Bulletin of the AMNH; v. 46, article 10. [ digitallibrary.amnh.org , digitallibrary.amnh.org(PDF) ] Słowiak, J., Brusatte, S. L., & Szczygielski, T. (2024). Reassessment of the enigmati...

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