Low Ulnar Nerve Palsy Quiz

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

<p>Hypothenar flattening (C)</p> Signup and view all the answers

<p>IP joint of the thumb is hyperflexed (C)</p> Signup and view all the answers

A nerve responsible for motor and sensory function in the hand, particularly affecting digits 4 and 5.

A characteristic hand position due to low ulnar nerve palsy, especially in digits 4-5.

Lumbricals of digits 4-5, interossei, and adductor pollicis are affected by low ulnar nerve palsy.

With the palm open, the MCP joints of digits 4-5 are hyperextended, while the IP joints of these digits are flexed.

Signup and view all the flashcards

Signs include hypothenar wasting, weak pinch, loss of grip strength, and difficulty with finger movements.

Signup and view all the flashcards

Nerve Involved: Ulnar nerve
Site: Low or distal
Digits Affected: Digits 4 and 5 are most affected
Muscles Paralyzed:
- Lumbricals of digits 4-5
- Interossei
- Adductor pollicis
Presentation with open palm at rest:
- Metacarpophalangeal (MCP) joints 4-5 are hyperextended
- Interphalangeal (IP) joints 4-5 are flexed
- Interphalangeal (IP) joint 1 (thumb) is hyperextended when pinching
Presentation when making a fist: Normal
Additional clinical signs:
- Hypothenar flattening or wasting
- Weak pinch
- Loss of grip strength
- Lack of finger abduction and adduction