Arm internal rotation
Citation, DOI & article data
Internal or medial rotation of the arm represents the movement of the humerus when an arm flexed to 90° at the elbow is internally rotated around the longitudinal plane of the humerus such that the hand moves towards the midline of the body.
The degree of rotation is dependant on the degree of abduction at the shoulder. In adduction internal rotation can be up to 70°. As the arm is abducted this increases towards 95°. It is the opposite of arm external rotation.
It is produced by:
See also movements of the arm.
- 1. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 2. Susan Standring. Gray's Anatomy. ISBN: 9780702052309
- 3. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. Read it at Google Books - Find it at Amazon