Presentation is loading. Please wait.

Presentation is loading. Please wait.

Upper Extremity Musculature. Shoulder Complex Scapula Scapula Clacivle Clacivle Sternum Sternum Humerus Humerus Rib Cage Rib Cage Sternoclavicular Joint.

Similar presentations


Presentation on theme: "Upper Extremity Musculature. Shoulder Complex Scapula Scapula Clacivle Clacivle Sternum Sternum Humerus Humerus Rib Cage Rib Cage Sternoclavicular Joint."— Presentation transcript:

1 Upper Extremity Musculature

2 Shoulder Complex Scapula Scapula Clacivle Clacivle Sternum Sternum Humerus Humerus Rib Cage Rib Cage Sternoclavicular Joint Sternoclavicular Joint Acromioclavicular Joint Acromioclavicular Joint Glenohumeral Joint Glenohumeral Joint Scapulothoracic Joint / Articulation Scapulothoracic Joint / Articulation

3

4 Shoulder Girdle Motions available at the shoulder girdle are upward rotation, protraction, downward rotation, retraction, and scapular tilt (when the shoulder enters hyperextension) Motions available at the shoulder girdle are upward rotation, protraction, downward rotation, retraction, and scapular tilt (when the shoulder enters hyperextension) Scapulohumeral rhythm: The first 30 degrees of shoulder joint motion is pure GH motion. After the initial 30 degrees, for every 2 degrees of shoulder flexion or abduction, the scapula must upwardly rotate 1 degree. This results in a 2:1 ratio. Scapulohumeral rhythm: The first 30 degrees of shoulder joint motion is pure GH motion. After the initial 30 degrees, for every 2 degrees of shoulder flexion or abduction, the scapula must upwardly rotate 1 degree. This results in a 2:1 ratio.

5 Scapulothoracic Joint Articulation of scapula with thorax Articulation of scapula with thorax Not a true joint Not a true joint Muscles associated with ST Joint (shoulder girdle) Muscles associated with ST Joint (shoulder girdle) Trapezius Trapezius Rhomboid Major Rhomboid Major Rhomboid Minor Rhomboid Minor Levator Scapulae Levator Scapulae Serratus Anterior Serratus Anterior Pectoralis Minor Pectoralis Minor

6

7 Trapezius

8 Upper Trapezius Origin Occipital Bone, nuchal ligament on cervical spinous processes Origin Occipital Bone, nuchal ligament on cervical spinous processes Insertion Lateral third of clavicle, acromion process Insertion Lateral third of clavicle, acromion process Action Scapular elevation and upward rotation Action Scapular elevation and upward rotation Innervation Spinal accessory (cranial nerve XI), C3-C4 sensory component Innervation Spinal accessory (cranial nerve XI), C3-C4 sensory component

9 Middle Trapezius Origin Spinous processes of C7 through T3 Origin Spinous processes of C7 through T3 Insertion Scapular spine Insertion Scapular spine Action Scapular retraction Action Scapular retraction Innervation Spinal accessory ( cranial nerve XI), C3 and C4 sensory component Innervation Spinal accessory ( cranial nerve XI), C3 and C4 sensory component

10 Lower Trapezius Origin Spinous processes of middle and lower thoracic vertebrae Origin Spinous processes of middle and lower thoracic vertebrae Insertion Base of the scapular spine Insertion Base of the scapular spine Action Scapular depression and upward rotation Action Scapular depression and upward rotation Innervation Spinal accessory ( cranial nerve XI), C3 and C4 sensory component Innervation Spinal accessory ( cranial nerve XI), C3 and C4 sensory component

11 Rhomboid Major & Minor

12 Rhomboids Origin Spinous processes of C7 through T5 Origin Spinous processes of C7 through T5 Insertion Medial border of scapula from level of spine to inferior angle Insertion Medial border of scapula from level of spine to inferior angle Action Scapular retraction, elevation and downward rotation Action Scapular retraction, elevation and downward rotation Innervation Dorsal scapular nerve (C5) Innervation Dorsal scapular nerve (C5)

13 Levator Scapulae

14 Origin Transverse processes of C1 - C4 vertebrae Origin Transverse processes of C1 - C4 vertebrae Insertion Vertebral border of scapula between the superior angle and spine Insertion Vertebral border of scapula between the superior angle and spine Action Scapular elevation and downward rotation Action Scapular elevation and downward rotation Innervation Third and fourth cervical nerves and dorsal scapular nerve (C5) Innervation Third and fourth cervical nerves and dorsal scapular nerve (C5)

15 Serratus Anterior

16 Origin Superolateral surfaces of upper 8 or 9 ribs at the side of chest Origin Superolateral surfaces of upper 8 or 9 ribs at the side of chest Insertion Vertebral border of scapula, anterior surface Insertion Vertebral border of scapula, anterior surface Action Scapular protraction and upward rotation Action Scapular protraction and upward rotation Innervation Long thoracic nerve (C5, C6, C7) Innervation Long thoracic nerve (C5, C6, C7)

17 Pectoralis Minor

18 Origin 3rd to 5th ribs, anterior surface Origin 3rd to 5th ribs, anterior surface Insertion Coracoid process of the scapula Insertion Coracoid process of the scapula Action Scapular depression, protraction, downward rotation, and tilt Action Scapular depression, protraction, downward rotation, and tilt Innervation Medial pectoral nerve (C8, T1) Innervation Medial pectoral nerve (C8, T1)


Download ppt "Upper Extremity Musculature. Shoulder Complex Scapula Scapula Clacivle Clacivle Sternum Sternum Humerus Humerus Rib Cage Rib Cage Sternoclavicular Joint."

Similar presentations


Ads by Google