The human anterior cruciate ligament

Histological and ultrastructural observations

R. Strocchi, V. De Pasquale, P. Gubellini, A. Facchini, M. Marcacci, R. Buda, S. Zaffagnini, A. Ruggeri

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

In transverse and longitudinal paraffin-embedded sections, the human anterior cruciate ligament (ACL) is made up of wavy bundles of collagen fibres arrayed in various directions, the majority around the axis of the ligament with a few running parallel to it. The fascicles making up the larger bundles are also characterised by this undulating appearance. In thin sections 2 types of collagen fibrils are observed: small (with a single diameter peak at 45 nm) and large (3 peaks at 35, 50 and 75 nm respectively), organised into distinct areas made up of either large or small bundles of fibrils. The numerous fibroblasts that are present appear elongated in the direction of the bundles with branches and short cytoplasmic processes. The elastic system is made up of both elastic and oxytalan fibres. The varied orientation of the bundles in the ACL, the complex ultrastructural organisation and the abundant elastic system make it very different from other ligaments and tendons, providing a structure able to withstand the multiaxial stresses and varying tensile strains imposed upon it.

Original languageEnglish
Pages (from-to)515-519
Number of pages5
JournalJournal of Anatomy
Volume180
Issue number3
Publication statusPublished - 1992

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anterior cruciate ligament
collagen
Anterior Cruciate Ligament
ligaments
Ligaments
Collagen
Elastic Tissue
tendons
thin section
Tendons
Paraffin
alkanes
fibroblasts
Fibroblasts
Direction compound
fibre

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Anatomy

Cite this

Strocchi, R., De Pasquale, V., Gubellini, P., Facchini, A., Marcacci, M., Buda, R., ... Ruggeri, A. (1992). The human anterior cruciate ligament: Histological and ultrastructural observations. Journal of Anatomy, 180(3), 515-519.

The human anterior cruciate ligament : Histological and ultrastructural observations. / Strocchi, R.; De Pasquale, V.; Gubellini, P.; Facchini, A.; Marcacci, M.; Buda, R.; Zaffagnini, S.; Ruggeri, A.

In: Journal of Anatomy, Vol. 180, No. 3, 1992, p. 515-519.

Research output: Contribution to journalArticle

Strocchi, R, De Pasquale, V, Gubellini, P, Facchini, A, Marcacci, M, Buda, R, Zaffagnini, S & Ruggeri, A 1992, 'The human anterior cruciate ligament: Histological and ultrastructural observations', Journal of Anatomy, vol. 180, no. 3, pp. 515-519.
Strocchi R, De Pasquale V, Gubellini P, Facchini A, Marcacci M, Buda R et al. The human anterior cruciate ligament: Histological and ultrastructural observations. Journal of Anatomy. 1992;180(3):515-519.
Strocchi, R. ; De Pasquale, V. ; Gubellini, P. ; Facchini, A. ; Marcacci, M. ; Buda, R. ; Zaffagnini, S. ; Ruggeri, A. / The human anterior cruciate ligament : Histological and ultrastructural observations. In: Journal of Anatomy. 1992 ; Vol. 180, No. 3. pp. 515-519.
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