This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Intra-articular anatomy

Authoring team

The acromioclavicular joints are noted for the following intra-articular structures:

  • articular surfaces:
    • disposed anteriolaterally to posteromedial; hence a tendency for the clavicle to be displaced superiorly during dislocation
    • covered in fibrocartilage
    • slightly convex facet on lateral end of clavicle
    • slightly concave facet on medial end of acromion
  • joint capsule:
    • lax, fibrous and attached to articular margins
    • reinforced by:
      • fibres of trapezius superiorly
      • thickening of capsule superiorly and inferiorly - the acromioclavicular ligaments
    • lined by synovial membrane

disc:

þþ a fibrocartilaginous disc is suspended from the superior part of the joint cavity

  • wedge-shaped
  • compensates for the slightly incongruous articular surfaces
  • occasionally, it completely divides the joint into two separate synovial compartments akin the the sternoclavicular joint

Related pages

Create an account to add page annotations

Create a free account

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.