February 16, 2011 by dailybolusoflr
* Connects the anterior surface of the scapula to the lesser tubercle of the humerus.
* Contraction causes internal rotation.
* Function can be tested using “Gerber's lift off test”
* Have the patient place their hand behind their back.
* Make sure their palm is facing out. (imagine the position of them getting handcuffed, but have the hand slightly higher on their back)
* Have the patient lift their hand away from their back.
Interpreting the Test:
* If the muscle is partially torn, movement will be limited or painful.
* If the muscle is completely torn, the patient will not be able to get their arm in position as internal rotation is compromised
Nice picture of the test is on the following website:
Linda Regan, MD FACEP
Program Director, Emergency Medicine Residency
Johns Hopkins Medical Institutions
1830 East Monument Street
Baltimore, MD 21287