Shoulder Girdle and Joint Flashcards
Ligaments
Glenohumeral ligaments
- Superior
- Middle
- Inferior
Coracohumeral ligament
Transverse humeral ligament
Coraco-acromial ligament
Bursae
Subtendinous bursa
Subacromial bursa
Subdeltoid bursa
TRAPEZIUS (Origin)
Superior nuchal line
External Occipital protuberance
Nuchal ligament
Spinous Process C7 to T12
TRAPEZIUS (Insertion)
- UPPER fibres - lateral 1/3 clavicle
- MIDDLE fibres - acromion and scapula spine
- LOWER fibres - tubercle of scapula spine
TRAPEZIUS (Action)
- UPPER = Elevation, Abduction beyond 90°
- MIDDLE = Retraction
- LOWER = Depression
TRAPEZIUS (Innervation)
Accessory Nerve (CN XI)
LEVATOR SCAPULAE (Origin)
Transverse processes C1-C4
LEVATOR SCAPULAE (Insertion)
Superior part of Medial border of scapula
LEVATOR SCAPULAE (Action)
Elevation of shoulder
Lateral rotation of scapula
LEVATOR SCAPULAE (Innervation)
Dorsal Scapular Nerve (C5)
Anterior rami C3- C5
RHOMBOID MINOR (Origin)
Lower end nuchal ligament
Spinous Process C7-T1
RHOMBOID MINOR (Insertion)
Medial border of scapula … to … root of spine of scapula
RHOMBOID MAJOR (Origin)
Spinous Process T1-T4
RHOMBOID MAJOR (Insertion)
Medial border of scapula … to … inferior angle of scapula
RHOMBOID MINOR AND MAJOR (Action)
Holds scapula against thoracic wall
Retracts scapula
Assists in elevation of scapula
RHOMBOID MINOR AND MAJOR (Innervation)
Dorsal Scapular Nerve (C4-C5)
SERRATUS ANTERIOR (Origin)
Ribs 1-8
(Finger-like processes)
SERRATUS ANTERIOR (Insertion)
Costal surface of Medial border of scapula
SERRATUS ANTERIOR (Action)
Holds scapula against thoracic wall
Protraction and Rotation of scapula
SERRATUS ANTERIOR (Innervation)
Long Thoracic Nerve (C5-C7)
SUBCLAVIUS (Origin)
1st Rib and costal cartilage
SUBCLAVIUS (Insertion)
Inferior surface of Middle 1/3 clavicle
SUBCLAVIUS (Action)
Anchors and Depresses clavicle
SUBCLAVIUS (Innervation)
Nerve to subclavius (C5-C6)