The provider repairs the central slip, i.e., the portion of the extensor tendon that slides over the proximal interphalangeal joint. He manipulates local tissue and the lateral bands back into their normal location to hold the tendon in place close to the bone. A secondary repair involves shortening of the functional scar and repair of the tendon. He performs the procedure to correct a boutonniere deformity and restore function and flexibility to the finger.
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