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In a swan neck deformity, the middle joint of a finger is extended (bent back) more than normal. The end joint is flexed (bent down) .
Signs and Symptoms
This deformity can cause difficulty bending the middle joint because of the location of the tendons. A snapping sensation can happen during bending. Long-lasting deformities can become stiff.
There are many treatments available for a swan neck deformity. The treatment type may vary depending on the main cause of the deformity and whether or not the deformity is stiff.
One non-invasive option involves a special type of ring for the middle joint that can be used to help correct the position and stop the snapping.
Surgical treatments are many and varied. They mainly involve prevention of the abnormal middle joint extension. Some involve repositioning of the tendons on the side of the middle joint. If the middle joint is stiff or arthritic, the joint may be replaced or fused in a slightly bent position.
Your hand surgeon can work with you to discuss the best possible treatment, whether or not it involves surgery.