Muscle origin
Infraspinous fossa of scapula
Muscle insertion
Greater tubercle of humerus
Muscle function
Stability of the Glenohural joint (part of the rotatorcuff), external rotation of the shoulder and decelerator when throwing.
Nerve innervation
C5-6 (Lovett reactor T12-L1)
Primary muscle type
Phasic / Type I (70-80%)
Myofascial lines
Deep back arm line
Primary inhibatory muscles
Rhomboid, Triceps brachii, Latissimus dorsi, Teres major, Deltoid anterior, Pectoralis major, Biceps brachii
Organ relationship (T1-9, n. Vagus)
Related joints
Associated muscles
Manual and practical therapy strategies that will help you find the root cause(s) and achieve faster and better results with your clients.
Functional Rehab Academy is a part of:
Move2Peak Academy ApS, Denmark
contact@functionalrehabacademy.com