Avulsion of extensor tendon give rise to?: (A) Mallet finger, (B) Dupuytren's contracture, (C) Trigger finger, (D) Swan neck deformity
Answer is A. It is the flexion deformity of the distal interphalangeal joint usually due to avulsion of extensor tendon of distal phalanx. Ref: Current Diagnosis & Treatment in Ohopedics 3/e, page 538,564-65.