muscle: infraspinatus

yogabook / muscles / infraspinatus

Linkmap

Muskeln Trizeps caput longum Trizeps caput laterale Supraspinatus Deltoideus pars spinalis Infraspinatus Teres minor Teres major Latissimus dorsi

Infraspinatus

scapulohumeral muscle of the shoulder girdle, as external rotator of the arm extending from the middle inner shoulder blade to the posterior outer upper humerus.
Origin: Infraspinous fossa of the lower inner posterior scapula
Attachment: Tuberculum majus or facies musculi infraspinati of the upper posterior humerus
Innervation: Nervus suprascapularis from plexus brachialis (C4-C6)
Antagonists:
Movement: External rotation

Tests

Infraspinatus-Test, Drop Arm Zeichen, Lateral Rotation Lag Sign, Hornblower-Zeichen