Extensor tenotomy: a technique for correction of posttraumatic distal interphalangeal joint hyperextension deformity.

Tenotomy of the dorsal apparatus over the middle phalanx was done in 13 digits for treatment of posttraumatic hyperextension of the distal interphalangeal joint associated with a boutonniere deformity. All but one patient was improved with distal interphalangeal joint flexion averaging 45 degrees at follow-up. Four digits had a 5 degree to 10 degree extensor lag. This procedure is simple and reliable and should be considered when increased distal interphalangeal joint flexion is desired.