What are the signs and symptoms of boutonnière deformity?

What are the signs and symptoms of boutonnière deformity?

The symptoms and signs of boutonnière deformity are visible.

• You have swelling and pain at the middle joint of the finger or toe. If your thumb is affected, it will be bent at the first joint.
• You can’t straighten out your finger or toe.
• The tip of your finger or toe is flexed up.
• Your joints are stiff, which gets worse over time.