Type your tag names separated by a space and hit enter



1. In anatomy, the upper extremity from shoulder to elbow. In ordinary usage, arm means the entire upper extremity, from shoulder to hand.

MUSCLES OF THE ARM Anterior and posterior views.
2. In clinical experimentation or research science, a treatment protocol in which subjects are enrolled.
3. In research on a therapeutic agent, one of several possible interventions. Most clinical trials include an active treatment arm, in which participants are exposed to the agent that is under study, and a placebo arm, a sham therapy used for the purpose of contrast or comparison.

articulated arm

A jointed instrument or positioning device used in imaging and in therapeutic procedures, as for permitting stereotactic localization of deep anatomical structures, guiding the collection of ultrasonic images, or focusing or directing laser energy.

Boston arm

SEE: Boston arm

brawny arm

A hard, swollen arm caused by lymphedema after mastectomy.

Saturday-night arm

A colloquial term for musculospiral paralysis.

arm is a sample topic from the Taber's Medical Dictionary.

To view other topics, please or purchase a subscription.

Taber’s Cyclopedic Medical Dictionary Online + Mobile powered by Unbound Medicine. Find 65,000 medical and nursing definitions. Download to iPhone, iPad, and Android. Learn more.


Venes, Donald, editor. "Arm." Taber's Medical Dictionary, 23rd ed., F.A. Davis Company, 2017. Taber's Online, www.tabers.com/tabersonline/view/Tabers-Dictionary/742111/all/arm.
Arm. In: Venes D, ed. Taber's Medical Dictionary. 23rd ed. F.A. Davis Company; 2017. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742111/all/arm. Accessed May 20, 2019.
Arm. (2017). In Venes, D. (Ed.), Taber's Medical Dictionary. Available from https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742111/all/arm
Arm [Internet]. In: Venes D, editors. Taber's Medical Dictionary. F.A. Davis Company; 2017. [cited 2019 May 20]. Available from: https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742111/all/arm.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - arm ID - 742111 ED - Venes,Donald, BT - Taber's Medical Dictionary UR - https://www.tabers.com/tabersonline/view/Tabers-Dictionary/742111/all/arm PB - F.A. Davis Company ET - 23 DB - Taber's Online DP - Unbound Medicine ER -