College of Massage Therapists of British Columbia (CMTBC) Practice Exam

Which nerve palsy results in a Bishop's Hand or Benediction Hand Deformity?

1. Ulnar Nerve

2. Median Nerve

3. Radial Nerve

4. Axillary Nerve

The correct answer is: Ulnar Nerve

The Bishop's Hand or Benediction Hand Deformity is associated with ulnar nerve palsy. This condition arises when the ulnar nerve, which innervates several intrinsic muscles of the hand, is compromised. In cases of ulnar nerve injury, the affected individual is unable to fully extend the fourth and fifth fingers, which leads to a characteristic posture of the hand. This impairments result from the loss of motor function in the muscles that normally allow for the extension of those fingers, while the flexor muscles, primarily innervated by the median nerve, remain functional. Consequently, when a person tries to make a fist or extend their hand, the fourth