Acromioclavicular joint classification etc

• Acromioclavicular Joint - Joint classification:

  • Synovial plane joint

  A) Acromioclavicular Joint

  
• Acromioclavicular Joint - Axis of movement:

  • 3 degrees of freedom available (about 3 axes)

  A) Acromioclavicular Joint

  
• Acromioclavicular Joint - Joint Capsule

  • Loose, fibrous capsule attaching to joint margins

  A) Acromioclavicular Joint

  
• Acromioclavicular Joint - Articular Surfaces:

  • Reciprocally shaped oval facets on:
  • Lateral end of the clavicle (slightly convex)
  • Anteromedial tip of the acromion process of scapula (slightly concave)
  • Both surfaces covered with fibrocartilage
  • Wedge shaped intra-articular disc

  A) Acromioclavicular Joint