World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0003225915
Reproduction Date:

Title: Enthesis  
Author: World Heritage Encyclopedia
Language: English
Subject: Terminologia Histologica, Musculoskeletal system, Acupuncture point, Epicondyle, Cortical bone
Collection: Musculoskeletal System
Publisher: World Heritage Encyclopedia


Typical Joint
Code TH H3.
Anatomical terminology

The enthesis (plural: entheses) is the connective tissue between tendon or ligament and bone.[1]

There are two types of entheses: Fibrous entheses and fibrocartilaginous entheses.

In a fibrous enthesis, the collagenous tendon or ligament directly attaches to the bone, whereas the fibrocartilaginous interface encompasses four transition zones:

  1. Tendinous area displaying longitudinally oriented fibroblasts and a parallel arrangement of collagen fibres
  2. Fibrocartilaginous region of variable thickness where the structure of the cells changes to chondrocytes
  3. Abrupt transition from cartilaginous to calcified fibrocartilage—the so-called 'tidemark' or 'blue line'
  4. Bone


  • Etymology 1
  • Pathology 2
  • See also 3
  • References 4
  • External links 5
    • Further reading 5.1


"Enthesis" is rooted in the Ancient Greek word, "ἔνθεσις" or "énthesis," meaning “putting in," or "insertion." This refers to the role of the enthesis as the site of attachment of bones with tendons or ligaments.


A disease of the entheses is known as an enthesopathy or enthesitis.[2] Enthetic degeneration is characteristic of spondyloarthropathy and other pathologies.

The enthesis is the primary site of disease in ankylosing spondylitis.

See also


  1. ^ "enthesis". Medcyclopaedia.  
  2. ^ Benjamin, M.; Toumi, H.; Ralphs, J. R.; Bydder, G.; Best, T. M.; Milz, S. (April 2006). "Where tendons and ligaments meet bone: Attachment sites (‘entheses’) in relation to exercise and/or mechanical load".  

External links

  • Enthesis information site at
  • Image of enthesis at Medscape
  • Enthesopathy and Soft Tissue Shadows at

Further reading

  • Resnick D, Niwayama G (1983). "Entheses and enthesopathy. Anatomical, pathological, and radiological correlation". Radiology 146 (1): 1–9.  

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.