Dance Anatomy & Kinesiology

The Upper Extremity 389 deltoid, middle deltoid, and posterior deltoid. The anterior deltoid traverses the front of the shoulder ...

390 Dance Anatomy and Kinesiology Attachments and Primary Actions of Latissimus Dorsi Muscle Proximal attachment(s) Distal attac ...

The Upper Extremity 391 major appears to assist with extension (hyperextension) and adduction, even when resistance is not prese ...

392 Muscle Proximal attachment(s) Distal attachment(s) Primary action(s) Rotator cuff muscles Supraspinatus (soo-prah-spi-NAH-tu ...

393 FIGURE 7.17 Anterior view of primary muscles acting on the shoulder complex. (A) Muscles, (B) attachments, (C) lines of pull ...

394 FIGURE 7.18 Posterior view of primary muscles acting on the shoulder complex. (A) Muscles, (B) attachments, (C) lines of pul ...

The Upper Extremity 395 Alignment and Common Deviations of the Shoulder Complex With normal alignment of the shoulder complex, t ...

396 Dance Anatomy and Kinesiology backward rather than lying flat against the rib cage in the desired manner (figures 7.21, A an ...

The Upper Extremity 397 of the scapula (figure 7.21C). The location of the serratus anterior (figure 7.21D) allows it to be a ke ...

398 Dance Anatomy and Kinesiology 7.23 (Kreighbaum and Barthels, 1996; Levangie and Norkin, 2001). This upward rotation of the s ...

The Upper Extremity 399 with scapular adduction and downward rotation; and glenohumeral external rotation is linked with scapula ...

400 Dance Anatomy and Kinesiology rotation of the humerus allows the greater tubercle of the humerus to pass behind the coracoac ...

The Upper Extremity 401 of the humerus upward (stabilizing component) rather than produce the angular rotation needed for should ...

402 Dance Anatomy and Kinesiology and neutralize undesired secondary actions of the prime movers. In addition, due to the large ...

The Upper Extremity 403 flexion also occurs in pushing motions when the hand is fixed (closed kinematic chain) and the elbow is ...

404 TABLE 7.4 Scapular Movements and the Muscles That Can Produce Them Scapular movement Primary and secondary muscles Elevation ...

The Upper Extremity 405 Shoulder Extension In open kinematic chain movements, shoulder exten- sion often involves moving the arm ...

406 Dance Anatomy and Kinesiology than 30°) is accompanied by upward rotation of the scapula (serratus anterior and trapezius); ...

The Upper Extremity 407 Shoulder External Rotation When the hand is free to move, shoulder external rotation refers to rotating ...

408 Dance Anatomy and Kinesiology Horizontal adduction refers to bringing the arms for- ward toward the midline from a horizonta ...