Acromioclavicular joint

Looks like

The small joint on top of the shoulder where the collarbone meets the shoulder blade's roof.

What it does

Lets the shoulder blade swing as the arm rises.

Keeping it well

Nothing routine; landing on the point of the shoulder separates it, and most heal without surgery.

Its parts

• Acromioclavicular ligament
• Articular capsule of acromioclavicular joint
• Articular disc of acromioclavicular joint
• Conoid ligament
• Trapezoid ligament

Related conditions

• Frozen shoulder (adhesive capsulitis)
• Gout
• Haemophilia & bleeding disorders
• Lyme disease
• Marfan syndrome & connective tissue disorders
• Osteoarthritis
• Polymyalgia rheumatica
• Psoriatic arthritis
• Rheumatic fever & rheumatic heart disease
• Rheumatoid arthritis
• Shoulder dislocation
• Systemic lupus erythematosus
• Temporomandibular joint disorder