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All About
Boutonnière deformity
Symptoms
Signs of boutonnière deformity can develop immediately following an injury to the finger or may develop a week to 3 weeks later.
- The finger at the middle joint cannot be straightened and the fingertip cannot be bent.
- Swelling and pain occur and continue on the top of the middle joint of the finger.
Causes
Boutonnière deformity is generally caused by a forceful blow to the top (dorsal) side of a bent (flexed) middle joint of a finger.
It also can be caused by a cut on the top of the finger, which can sever the central slip (tendon) from its attachment to the bone. The tear looks like a buttonhole ("boutonnière" in French). In some cases, the bone actually can pop through the opening.
Boutonnière deformities may also be caused by arthritis.
More about Treatment
Boutonnière deformity is the result of an injury to the tendons that straightens the middle joint of your finger. The result is that the middle joint of the injured finger will not straighten, while the fingertip bends back. Unless this injury is treated promptly, the deformity may progress, resulting in permanent deformity and impaired functioning.
FAQ on this Treatment
Is non-surgical treatment better than surgical treatment for boutonniere deformity?
Yes, splinting is preferred because surgery may leave behind abnormalities in appearance or motion. Whereas splinting restores normal function without invasion and to a greater degree of normalcy.
Can normal movement be restored completely after treatment for boutonniere deformity?
If medical attention is sought shortly after injury (recommended is 3 weeks) the deformity maybe completely reversed with minimal residual abnormalities like appearance. Delay can cause loss of function to some or all degree.