ABOUT ROUND LIGAMENT OF FEMUR (ligament of head of femur)

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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

- Suprasinovial part (tier)

Outer margin

- Anteroinferior wall

- Posteroinferior wall

- Medial wall

- Lateral wall

-- Fossa of the femoral head

-- Cartilage of the femoral head

Note

Translation of the Russian version of the article: Топография вертлужного канала. Классификация

Keywords:

ligamentum capitis femoris, ligament of head of femur, round ligament, ligamentum teres, classification, morphology, acetabular canal

BLOG CONTENT

ACETABULAR CANAL

Set of Classifications

2024MiglioriniF_MaffulliN

Abstract and table 4 ( overview of LCF tear classification ) of the article Migliorini F et al. The ligamentum teres and its role in hip arthroscopy for femoroacetabular impingement: a systematic review. (2024). Translation into Russian is available at the link: 2024MiglioriniF_MaffulliN . Systematic Review / Open access / Published: 20 December 2024 The ligamentum teres and its role in hip arthroscopy for femoroacetabular impingement: a systematic review Filippo Migliorini, Federico Cocconi, Tommaso Bardazzi, Virginia Masoni, Virginia Gardino, Gennaro Pipino, Nicola Maffulli Journal of Orthopaedics and Traumatology volume 25, Article number: 68 (2024) Abstract Background The ligamentum teres (LT) has received attention in patients undergoing hip arthroscopy (HA) for femoroacetabular impingement (FAI). Indeed, a better understanding of the function of the LT and its implications for cli...

77-79Pliny the Elder

Fragment from Pliny the Elder's Natural history , Book 11 ( Naturalis historia , c a . 77-79). The author distinguishes rounded ligaments in his Latin classification. This concept was the basis for the creation of the term ligamentum teres, a synonym for ligamentum capitis femoris (LCF). See our commentary at the link: 77-79Pliny the Elder [Rus], and 2020ArkhipovSV_ProlyginaIV . Quote. [Lat] Naturalis historia . Liber XI. LXXXVIII. Nervi, orsi a corde bubuloque etiam circumvoluti, similem naturam et causam habent, in omnibus lubricis applicati ossibus nodosque corporum, qui vocantur articuli, aliubi interentu, aliubi ambitu, aliubi transitu ligantes, hic teretes, illic lati, ut quaeque poscit figuratio. (original source: 9cent. Plinii Secundi , p. 133, monumenta.ch2 ) Plinius , f ragment of page 133 Translation [Eng] Natural history . Book XI. CHAP. 88. THE NERVE: ANIMALS WHICH HAVE NONE. «The nerves* take their rise at the heart, and even surr...

Types of LCF Reconstruction

Version : 20240419 Types of LCF Reconstruction 1. Open a. - during endoprosthesis b. - during osteoplastic surgeries c. - during osteosynthesis 2. Semi-open a. - during osteoplastic surgeries b. - during osteosynthesis 3. Closed (Arthroscopic) Subtypes of LCF Reconstruction 1. Reinsertion 2. Suture 3. Endoprosthesis 4. Autoplasty a. ligament transposition b. tendoplasty 5. Alloplasty a. ligament transplantation b. tendon transplantation 6. Xenoplasty a. ligament transplantation b. tendon transplantation 7. Reinforcement (suturing) Keywords: ligamentum capitis femoris, ligament of head of femur , round ligament, ligamentum teres, classification, reconstruction In translating ...

Load on LCF

Version : 20240419 Magnitude of LCF Load 1. Optimally loaded 2. Partially loaded 3. Unloaded 4. Excessively loaded (overloaded) Reasons for Increased Load on LCF 1. Increase in effective body weight 2. Decrease in the lever arm of the abductor muscle group 3. Decrease in the strength of the abductor muscle group 4. Increase in the lever arm of body weight 5. The presence of a dynamic component (walking, running, jumping) Reasons for Decreased Load on LCF 1. Decrease in body weight 2. Increase in the lever arm of the abductor muscle group 3. Increase in the strength of the abductor muscle group 4. Decrease in the lever arm of body weight 5. Absence of dynamic component (walking, running, jumping) Keywords: ligamentum capitis femoris, ligament of head of femur , round ligament, ligamentum teres, classification, functions, dysfunction, l oad ...

Performance of LCF Functions

Version : 20240419 Degrees of LCF Function Performance 1. Normally functioning 2. Dysfunctional (function partially impaired) 3. Afunctional (function not performed) In the case of afunctional LCF, one or more functions are not performed. With dysfunctional LCF, one or more functions are impaired. For example, in the case of partial subsynovial damage, mechanical and trophic dysfunction will be observed. TYPES OF LCF DYSFUNCTIONS 1. Mechanical dysfunction 2. Trophic dysfunction 3. Sensory dysfunction 4. Synthetic dysfunction 5. Conductor dysfunction Keywords: ligamentum capitis femoris, ligament of head of femur , round ligament, ligamentum teres, classification, functions, dysfunction In tra...

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 redu...

Pathology of the Acetabular Canal

Version : 20240419 Pathology of the Acetabular Canal 1. Diameter reduction 2. Decreasing depth 3. Deformation 4. Uneven walls 5. Dislocation of the acetabular canal 6. Local narrowing 7. Fracture of the wall without displacement 8. Fracture of the wall with medial displacement 9. Fracture of the wall with lateral displacement 10. Mobile foreign bodies 11. Fixed foreign bodies 12. Metal construction 13. Sequestrum 14. Mobile bone fragment 15. Mobile osteochondral body 16. Mobile cartilaginous body 17. Mobile foreign body 18. Osteophytes of the femoral head 19. Osteophytes of the acetabulum fossa 20. Salt crystals 21. Chondromatosis 22. Obliteration by bone tissue 23. Obliteration by scar tissue 24. Malignant neoplasms 25. Benign neoplasms 26. Disappearance of the acetabular canal 27. Lateral wall defect 28. Defect of the medial wall Keywords: ligamentum capitis femoris, ligament of head of femur , round ligament, l...