The JBJS Quiz of the Month is a collection of 10 relevant questions from each orthopaedic subspecialty. The questions are drawn from JBJS Clinical Classroom, which houses over 4,500 questions and 3,100 learning resources. Take the Quiz to see how you score against your peers!

NOTE: This quiz does not earn users CME credits. The questions must be answered within Clinical Classroom to earn CME credits.

A patient presents 2 years after an ulnar nerve laceration at the wrist that was never repaired. Which of the following treatments can improve the patient’s hand function?
    • Tendon transfer to improve thumb abduction
    • Opponensplasty procedures are tendon transfer procedures that can be performed to improve thumb abduction in median nerve palsies


    • Tendon transfer to correct pseudoclawing
    • Tendon transfers, such as the Zancolli lasso procedure, can be performed to correct late clawing from an ulnar nerve palsy


    • Wrist fusion
    • An ulnar nerve laceration at the wrist would result in loss of intrinsic hand function and clawing. Wrist flexion and extension would not be affected, and wrist fusion is not indicated


    • Tendon transfer to the extensor pollicis longusy
    • An extensor indicis proprius tendon transfer to the extensor pollicis longus is performed for an attritional rupture of the extensor pollicis longus, as can occur in the setting of a distal radius fracture