Articular capsules of proximal interphalangeal joints

Looks like

The capsules of the middle finger joints.

What it does

Enclose the middle joints, the key joints for gripping.

Keeping it well

Stiffen easily after sprains, so early movement matters. Swelling of both sides suggests inflammatory arthritis.

Related conditions

• Gout
• Haemophilia & bleeding disorders
• Lyme disease
• Marfan syndrome & connective tissue disorders
• Osteoarthritis
• Psoriatic arthritis
• Rheumatic fever & rheumatic heart disease
• Rheumatoid arthritis
• Systemic lupus erythematosus
• Temporomandibular joint disorder