Review Question - QID 3551

Action	Numeric Key	Letter Key	Function Key
Choose 1	1
Choose 2	2
Choose 3	3
Choose 4	4
Choose 5	5
Submit Response			Enter
Previous Question			Left Arrow
Next Question		N	Right Arrow
Open/Close Bookmode		C
Open Image			Spacebar

Cubital Tunnel Syndrome Presentation Physical exam QID: 3551 (OBQ11.128)

QID 3551 (Type "3551" in App Search)

The physical exam finding demonstrated on the patient's right hand in the video (Figure V) is found with neuropathy of which of the following nerves?

Type & Select Correct Answer

Type in at least one full word to see suggestions list

Musculocutaneous nerve

14/5026

Anterior Interosseious Nerve (AIN

19%

980/5026

Radial nerve

73/5026

Ulnar nerve

75%

3766/5026

Median nerve

158/5026

Select Answer to see Preferred Response

Review TC In New Tab

The video demonstrates Froment's sign on the patient's right hand, which is characterized by interphalangeal (IP) flexion during attempted key pinch, and is found in patients with ulnar neuropathy. Therefore it can be found with ulnar nerve compression in the cubital tunnel (Cubital Tunnel Syndrome) or in Guyon's Canal (Ulnar Tunnel Syndrome).

Froment's sign is performed by having the patient pinch a piece of paper with the thumb IP joint extended against resistance (pulling paper away). It should be done with both hands side by side to compare them to each other.

In a hand with a ulnar neuropathy, adductor pollicis (ulnar n.) is deficient, and can not flex the MCP joint to give pinch strength with an extended IP joint. The thumb compensates by recruiting the FPL (median n.) to flex the IP joint to give pinch strength. The result is, in a positive Froment's sign, the IP joint will flex (buckle) to try to give increased strength to the pinch.

Illustration V shows a demonstration of the Froment's sign.

ILLUSTRATIONS:

Ulnar Neuropathy - Robert J. Strauch, MD - (NYT#3 - S1-3 - 2017)

Hand
- Cubital Tunnel Syndrome

10/3/2017

3822 views

4.8

(5)

Rating

Please Rate Question Quality

3.7

(34)