Podcast
Questions and Answers
What is a primary clinical characteristic of ulnar nerve palsy?
What is a primary clinical characteristic of ulnar nerve palsy?
In ulnar nerve palsy, the imbalance between which muscle groups contributes to the 'claw hand' deformity?
In ulnar nerve palsy, the imbalance between which muscle groups contributes to the 'claw hand' deformity?
After carpal tunnel syndrome, what condition is identified as the second most common neuropathy of the upper extremity?
After carpal tunnel syndrome, what condition is identified as the second most common neuropathy of the upper extremity?
Which of the following motor function deficits is specifically associated with ulnar nerve palsy?
Which of the following motor function deficits is specifically associated with ulnar nerve palsy?
Signup and view all the answers
An ulnar nerve lesion located closer to the elbow is specifically referred to as:
An ulnar nerve lesion located closer to the elbow is specifically referred to as:
Signup and view all the answers
Study Notes
Ulnar Nerve Palsy ("Claw Hand")
- Ulnar nerve palsy can cause loss of sensory and motor function.
- Nerve injury weakens muscles, creating an imbalance between strong extrinsic muscles (e.g., extensor digitorum) and weakened intrinsic muscles (e.g., interossei and lumbricals).
- This imbalance is clinically characterized by metacarpophalangeal (MCP) hyperextension, interphalangeal (IP) flexion, and wasting of the hypothenar muscles.
- The thumb cannot be adducted.
- Ulnar nerve entrapment is the second most common upper extremity neuropathy after carpal tunnel syndrome.
- Ulnar nerve lesions can occur high (closer to the elbow), causing cubital tunnel syndrome, or low (closer to the wrist), causing Guyon's canal syndrome.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on ulnar nerve palsy, its causes, symptoms, and clinical features. This quiz will cover the implications of nerve injury and the resulting muscle imbalances. Understand the different types of ulnar nerve lesions and their effects on hand function.
