Archives of Orthopaedic and Trauma Surgery

, Volume 123, Issue 6, pp 283–288 | Cite as

Structure and vascularization of the acetabular labrum with regard to the pathogenesis and healing of labral lesions

Original Article



The aim of this study is to examine the structure and vascularization of the acetabular labrum with regard to the pathogenesis and healing of labral tears.

Materials and methods

The labral tissue was characterized immunohistochemically and under light microscopy; the collagen fibril texture was demonstrated by scanning electron microscopy after temporary staggered maceration of the tissue; and the vascularization of the acetabular labrum was studied immunohistochemically using antibodies against laminin.


The peripheral aspect of the acetabular labrum consists of dense connective tissue. The internal layer consists of type II collagen-positive fibrocartilage. Scanning electron microscopy revealed three distinct layers in the acetabular labrum: (1) the articular surface was covered by a meshwork of thin fibrils; (2) beneath the superficial network, there is a layer of lamella-like collagen fibrils; (3) the majority of the collagen fibrils are oriented in a circular manner. Blood vessels enter the labrum from the adjacent joint capsule. The distribution of vessels within the labrum is not homogenous. Blood vessels can be detected only in the peripheral one-third of the labrum. The internal part is avascular.


The result of this study demonstrates that the structure of the acetabular labrum is highly significant for the direction of traumatic and dysplastic labral lesions. The biomechanical analysis of the structure suggests that the labrum is stressed by compressive load. Therefore, excision or removal of the labrum may alter physiological functions such as enhancing joint stability and load distribution. The vascular pattern identified should encourage surgeons to develop repair strategies of peripheral labral tears to maintain its functions in the hip.


Fibrocartilage Circular tensile stress Labral lesions Healing potential 



We thank Mrs. R. Worm, Mr. C. Franke and Mrs. H. Waluk for their help and expert technical assistance.


  1. 1.
    Arnoczky SP, Warren RF (1982) Microvasculature of the human meniscus. Am J Sports Med 10:90–95PubMedGoogle Scholar
  2. 2.
    Czerny C, Hofmann S, Neuhold A et al (1996) Lesions of the acetabular labrum: accuracy of MR imaging and MR arthrography in detection and staging. Radiology 200:225–230PubMedGoogle Scholar
  3. 3.
    Dameron TB (1959) Bucket handle tear of acetabular labrum accompanying posterior dislocation of the hip. J Bone Joint Surg Am 41:131–134Google Scholar
  4. 4.
    Ferguson SJ, Bryant JT, Ganz R, Ito K (2000) The acetabular labrum seal: a porolastic finite element model. Clin Biomech 15:463–468CrossRefGoogle Scholar
  5. 5.
    Ferguson SJ, Bryant JT, Ganz R, Ito K (2000) The influence of the acetabular labrum on hip joint cartilage consolidation: a porolastic finite element model. J Biomech 33:953–960CrossRefPubMedGoogle Scholar
  6. 6.
    Ferguson SJ, Bryant JT, Ito K (2001) The material properties of the bovine acetabular labrum. J Orthop Res 19:887–896CrossRefPubMedGoogle Scholar
  7. 7.
    Fitzgerald RH Jr (1995) Acetabular labrum tears. Diagnosis and treatment. Clin Orthop 311:60–68PubMedGoogle Scholar
  8. 8.
    Hase T, Ueo T (1999) Acetabular labral tear: arthroscopic diagnosis and treatment. Arthroscopy 15:138–141PubMedGoogle Scholar
  9. 9.
    Hickman JM, Peters CL (2001) Hip pain in the young adult: diagnosis and treatment of disorders of the acetabular labrum and acetabular dysplasia. Am J Orthop 30:459–469PubMedGoogle Scholar
  10. 10.
    Ikeda T, Awaya G, Suzuki S et al (1988) Torn acetabular labrum in young patients. Arthroscopic diagnosis and management. J Bone Joint Surg Br 70:1, 13–16PubMedGoogle Scholar
  11. 11.
    Konrath GA, Hamel A, Olson SA, Bay B, Sharkey NA (1998) The role of the acetabular labrum and the transverse ligament in load transmission of the hip. J Bone Joint Surg Am 80:1781–1787PubMedGoogle Scholar
  12. 12.
    Kummer B (1991) The clinical relevance of biomechanical analysis of the hip area. Z Orthop 129:285–294PubMedGoogle Scholar
  13. 13.
    Lage LA, Patel JV, Villar RN (1996) The acetabular labral tear: an arthroscopic classification. Arthroscopy 12:269–272PubMedGoogle Scholar
  14. 14.
    Löhe F, Eckstein F, Sauer T, Putz R (1996) Structure, strain and function of the transverse acetabular ligament. Acta Anat (Basel) 157:315–323Google Scholar
  15. 15.
    Ohtani O (1987) Three-dimensional organization of the connective tissue fibers of the human pancreas: a scanning electron microscopic study of NaOH treated tissue. Arch Histol Cytol 50:557–566Google Scholar
  16. 16.
    Paterson W (1957) The torn acetabular labrum: a block to reduction of dislocated hip. J Bone Joint Surg 39:306–309Google Scholar
  17. 17.
    Pauwels F (1954) Eine neue Theorie über den Einfluß mechanischer Reize auf die Differenzierung der Stützgewebe. Zehnter Beitrag zur funktionellen Anatomie und kausalen Morphologie des Stützapparates. Z Anat Entwicklungsgesch 121:478–515Google Scholar
  18. 18.
    Petersen W, Tillmann B (1995) Blood and lymph supply of the knee joint meniscus. Acta Orthop Scand 45:354–359Google Scholar
  19. 19.
    Petersen W, Tillmann B (1996) Struktur und Gefäßversorgung des Labrum glenoidale. Ann Anat 177:324Google Scholar
  20. 20.
    Petersen W, Tillmann B (1998) Collagenous fibril texture of the human knee joint menisci. Anat Embryol (Berl) 197:317–324Google Scholar
  21. 21.
    Scapinelli R (1968) Studies on the vasculature of the human knee joint. Acta Anat 70:305–331Google Scholar
  22. 22.
    Seldes RM, Tan V, Hunt J, Katz M, Winiarsky R, Fitzgerald RH (2001) Anatomy, histologic features and vascularity of the adult acetabular labrum. Clin Orthop 382:232–240PubMedGoogle Scholar
  23. 23.
    Tillmann B (1998) Articulatio coxae. In: Leonhardt H, Tillmann B, Töndury G, Zilles K (eds) Rauber/Kopsch Vol I, chapter 7. Untere Extremität. Thieme, Stuttgart, pp 495–508Google Scholar
  24. 24.
    Tillmann B, Schünke M (1991) Struktur und Funktion extrazellulärer Matrix. Anat Anz 168 [Suppl]:23–26Google Scholar
  25. 25.
    Tschauer C, Hofmann S, Czerny C (1997) Hüftdysplasie. Morphologie, Biomechanik und therapeutische Prinzipien unter Berücksichtigung des Labrum acetabulare. Orthopäde 26:89–108Google Scholar
  26. 26.
    Williams PL, Warwick R (1989) Gray's Anatomy. WB Saunders, Philadelphia.Google Scholar

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Wolf Petersen
    • 1
  • Frank Petersen
    • 1
  • Bernhard Tillmann
    • 1
  1. 1.Departments of Orthopaedic Surgery and AnatomyChristian Albrechts UniversityKielGermany

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