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Interaction of ligaments of the hip joint and muscles during single-leg support 


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  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...

CRITICAL MASS OF CONSENSUS

Online version from 07/03/2025   Critical mass of consensus:  Opinions on the importance of ligamentum capitis femoris (XX-XXI century) Arkhipov S . V. Content [i]   Abstract [ii]   Opinions [iii]   Authors & Affiliations [iv]   References [v]   Appendices [i]   Abstract This evolving article collects views on the importance of the ligamentum capitis femoris (LCF) to the musculoskeletal system. Our collection aims to highlight the emerging fundamental shift in the current consensus in the orthopaedic and musculoskeletal research communities regarding the meaning of LCF. Here the convinced convince others. Ultimately, this once-unconventional idea will become established knowledge, enabling a transformation in clinicians’ thinking and in approaches to the prevention, diagnosis, and treatment of hip joint pathologies. [ii]   Opinions   2025 «The LT [LCF] works as a secondary static stabilizer of the hip by acting as a sling to preven...

1614PlatterF

Fragment from the book Platter F. Observationum (1614). The author notes the role of the ligamentum capitis femoris (LCF) in fixing the femur in the acetabulum and the possibility of its lengthening  (synovitis) . Quote pp. 141-142 [Lat] Cruris dextri astrictio & contractio, post coxendicum dolorem. Cùm enim ligamentum illud articulum circumd ás, omnium totius corporis ligamentorum, quae articulos ambiunt, sit amplissimum; fieri potest, ut adeò cedat, ut (sicuti saepe sit) femoris caput, è suo sinu devoluatur, & in membranae illius (quae cùm erassissima sit, prae omnibus totius corporis ligamentis, nunquam vi qualicunque disrumpi potest) amplitudine seu capacitate subsistat, elongato simul & vehementer attracto, tereti illo & crasso, quod caput aliàs in suo sinu retinere solet, ligamento. Quod & ob tensionem illam nimiam, astrictum & induratum, chordae alicuius crasssissimae & firmisimae instar, quae nunquam disrumpi, nunquam ab acetabulo, cuius cartilag...

LCF Mechanics

   Mechanics   OF THE  Ligamentum Capitis Femoris Announcement: A new scientific direction « Mechanics of the Ligamentum Capitis Femoris» has been formed.   Definition: A section of physiology that develops issues of applying the doctrine of the ligamentum capitis femoris (LCF), its movements and forces to solving medical and biological problems.   Synonyms: LCF Mechanics Mechanics of the Ligamentum Capitis Femoris Ligamentum Capitis Femoris Mechanics Ligament of the Head of Femur Mechanics L igamentum Teres Femoris Mechanics Round Ligament of Femur Mechanics   Postulates of LCF Mechanics: Strong, flexible, and non-stretchable with specific attachment points. Limits adduction, rotation, and cranial displacement of the femur. Shunts load on the femoral head and the abductor muscle group of the hip joint. Ensures rhythmicity, symmetry, and energy efficiency of walking. Performs the function to suspend the pelvis during single-leg support.   T...

1921BrausH

  Fragments from the book: Braus H. Angeborene Gelenkveränderungen, bedingt durch künstliche Beeinflussung des Anlagemateriales (1921). The author describes the anatomy, attachment, shape, properties and changes in pathology of the ligamentum capitis femoris (LCF). The text in German. The text in Russian is available at the following link: 1921BrausH . Quote pp. 523-524. Eine Besonderheit der Hüftpfanne ist ein Fenster in ihrer Wandung. Der knöcherne Rand, an welchem die Pfannenlippe angeheftet ist, ist nach unten zw breit eingeschnitten, Incisura acetabuli (Abb. 90). Die Pfannenlippo ist trotzdem ein geschlossener Ring, weil die genannte Lücke durch ein Band, Ligamentum transversum acetabuli. überbrückt wird und weil die Pfannenlippe auf dieses Band fortgesetzt ist (Abb. 258). So ist der ventil artige Abschluß des Pfannenrandes gegen den Schenkelkopf gewahrt und trotz dem der Eintritt eines Bandes in den Innenraum des Gelenkes durch das Fenster unterhalb des Bandes möglich. Das Pf...

1550CortiM

  Fragment from the book Corti M. In Mundini Anatomen explicatio (1550). An early description of the anatomy and role of ligamentum capitis femoris (LCF) is presented, and a rare synonym is mentioned. The pathogenesis of lameness and soft tissue atrophy in LCF pathology is discussed. For more details, see the comment 1550CortiM [Rus] . Quote p. 376-377. [Lat] De anatomia cruris & pedis. Postea eleua musculos & chordas & vide ossa. Et primum est os foemoris supra quod fabricati sunt spondyles dorsi: & per consequens totum corpus. In parte inferiori habet pixidem quondam: in cuius concauitate locata est extremitas rotunda canna coxe: quae vertebrum vocatur. & in medio amborum in parte interiori est quod dam ligamentum quod potest vocari vertebrum: & quando hoc vel primum resilit foras: tunc niecesse est hominem claudicare: quia crus hoc elongatur & firmari non potest: nec totum potest bene supportari: & necesse est vt crus tabescat: quia uene quae p...

1833GerdyPN

  P.N. Gerdy, in his experiment, discovered tensioning of the ligamentum capitis femoris (LCF) during thigh adduction. At the same time, it was noted for the first time that the consequence of LCF tension during hip adduction is a downward and lateral displacement of the femoral head. Normally, this mechanism provides unloading of the upper articular surfaces when supporting one leg (see 1874SavoryWS ). The translation from French was done in collaboration with ChatGPT 3.5.   Gerdy PN. Physiologie médicale, didactique et critique. T. 1. Paris: Librairie de Crochard, 1833. [fragment] Quote pp. 551-554   L'inclinaison de la cuisse en dehors, que l'on nomme son abduction, est un mouvement assez étendu, mais qui pourtant ne permet pas à la cuisse de se placer perpendiculairement à sa direction verticale. Les batteleurs peuvent se reposer sur un plan horizontal, les cuisses écartées en sens opposé. Dans l'inclinaison ...

2025Copilot. Ancient Egyptian Art

  Copilot: painting « Jacob Wrestling with the Angel in the Style of Ancient Egyptian Art » (2025). 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 ).     Painting: Jacob Wrestling with the Angel in the Style of Ancient Egypti...

1610TilensJ

  Tilens J, Jacob Wresting the Angel (1610s).  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 ). Jan Tilens – Jacob Wresting the Angel (1610s); original in the  wikimedia.org  collection (CC0 – public domain, color corre...

ca.1963ShagalM

  Shagal  M, painting, Jacob wrestling with the angel ( с a. 1963). 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 ).     Moishe Shagal  – Jacob Wrestling with the Angel ( с a. 1963); original in ...