BOUTONNIERE DEFORMITYFLEXION OF THE PI JOINT WITH HYPEREXTENSION OF THE DI JOINT OF THE FINGER, CAUSED BY SEPARATION OF THE EXTENSOR HOOD AND PROTRUSION OF THE HEAD OF THE PROXIMAL PHALANGE THROUGH THE RESULTING “BUTTONHOLE

Megan MollEmily Bunting1B

• Can develop in inflammatory disorders such as rheumatoid arthritis .

• people are born with a mild boutonniere posture of most or all of their fingers.

HOW DOES IT DEVELOP ?

• A boutonniere deformity occurs when disease or injury causes the PIP joint to become flexed and the DIP joint is pulled up into too much extension

• the finger is hit or bent forcefully in a wrong way, the sheet on the top of the finger tears away from its attachment to the top of the middle finger bone.

THE ANATOMY

• The finger is painful and swollen around the PIP joint. The PIP joint may not straighten out completely under its own power.

HOW DOES IT LOOK AND FEEL?

• To avoid surgery a splint can be worn 6-8 weeks

• The Boutonnière splint helps bend the end joint down and straighten the middle knuckle• Under the doctor’s help, surgery can be performed to reconstruct the attachment

of the tendons

TREATMENTS

• Physical therapy of the hand • Recovery after surgery is usually 3-4 months• 6 months for full recovery

RECOVERY

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