Supporting Structures

Question 1

Describe the capsule + ligaments of the sc joint

Answer 1

• Capsule - surrounds the articular margins
• Fibrocartilaginous disc between articular surfaces
• Ligaments
  > ant. sternoclavicular - thickening of anterior capsule
  > post. sc - thickening of posterior capsule
  > interclavicular - attaches from one clavicle - runs along superior manubrium to other clavicle
  > costoclavicular - from first costal cartilage to costal tuberosity of clavicle EXTRACAPSULAR

Question 2

Describe the capsule + ligaments of the ac joint

Answer 2

• Capsule surrounds articular margins
• fibrocartilaginous disc between articular surfaces
• ligaments:
  > Acromioclavicular ligament - thickening of capsule above + below
  > Coracoclavicular ligament - coracoid process to trapezoid line and conoid tubercle of clavicle