Human Movement Science & Functional Anatomy of the:
by Brent Brookbush DPT, PT, COMT, MS, PES, CES, CSCS, H/FS
By User:Mikael Häggström - Image:Gray409.png, Public Domain, https://commons.wikimedia.org/w/index.php?curid=2892603
What’s in a name
- Latissimus – From Latin lātissimus (“widest, broadest”), superlative of lātus (“wide, broad”) (Wiktionary)
- Dorsi - dorsal (adj.) early 15c., from Old French dorsal (14c.) or directly from Medieval Latin dorsalis, corresponding to Latin dorsualis "of the back," from dorsum "back," which is of uncertain origin. (Etymology Online)
Latissimus Dorsi Cadaver - http://www.rvuanatomy.com/uploads/1/3/4/5/13457421/db1a_animated.gif
- Origin: Spinous processes and supraspinous ligament of last six thoracic vertebrae, the caudal end of the most vertical fibers attach to the last three or four ribs - interdigitating with the external obliques, thoracolumbar fascia from the lumbar and sacral vertebrae and posterior 1/3 of the external lip of the iliac crest, and a slip from the inferior angle of the scapula (3, 8, 11).
- Insertion: Floor of the intertubercular groove of the humerus (3, 11).
(From left to right) PM - Pectoralis major, LHB - Long Head of Biceps, LD - Latissimus dorsi, SHB - Short Head of Biceps, CB - Coracobrachialis, TM Teres Major - http://radsource.us/wp-content/uploads/2011/11/6A.jpg
The latissimus dorsi is a large, superficial muscle with a complex origin and peculiar path to its insertion. As the latissimus dorsi courses superiorly it invests in the inferior angle of the scapula (either directly or through fascial slip), makes up the majority of the posterior wall of the axilla, wraps around the teres major a