SK lecture 7

winniesmith2's version from 2018-05-08 15:14

Section 1

Question Answer
what bones make up the shoulder girdle scapula, clavicle and the manubrium of the sternum
what are the 6 movements of the shoulder girdle (physically do them)elevation, depression, abduction, adduction, upward rotation, downward rotation
what are the main posterior muscles responsible for movement of the shoulder girdletrapezius, rhomboids and levator scapulae
what are the main anterior muscles responsible for movement of the shoulder girdlepectoralis minor, serratus anterior
what is the nuchal ligament a fibrous lamina, which is attached to the posterior tubercle of the atlas, and to the spinous processes of the cervical vertebrae and forms a septum between the muscles on either side of the neck.

Section 2

Question Answer
what is the action of the rhomboidsadduction, downward rotation, elevation
what is the action of the levator scapulae (LS)elevation, adduction, downward rotation
levator scapulaeO- transverse process of 1st-4th Cervical V.
I- Medial border of scapula, between superior angle and superior portion of the spine.
Trapezius (upper)O- External occipital protuberance, medial portion of the superior nuchal line of the occiput, ligamentum nuchae and spinous process of C-7 through T-12.7

I- Lateral one-third of clavicle, acromion and spine of scapula.
Trapezius (middle)see upper
Trapezius (lower)see upper.
what is the action of the upper trapeziusadduction and elevation
what is the action of the middle trapeziusadduction
what is the action of the lower trapeziusadduction, depression, downward rotation
Serratus anteriorO- external surfaces of upper eight to nine ribs.
I- anterior surface of medial border of the scapula.
what is the action of the serratus anteriorabduction and upward rotation
pectoralis minorO- third, fourth and firth ribs.
I-medial surface of coracoid process of the scapula.
what is the action of the pectorals minordepression, abduction, downward rotation

Section 3

Question Answer
what causes elevation of the shoulder girdleLS. (& Rhom.) Trapz (upper)
what causes adductionRhom. (&LS) Trapz
what causes depressionTrapz (lower) Pectoralis minor
what causes downward rotationRhom. (&LS) Pectoralis minor
what causes upward rotationTrapz (lower). Serratus anterior.
what causes abduction Serratus anterior. Pectoralis minor.

Section 4

Question Answer
Describe a fractured clavicle Reported to be the most commonly fractured bone in the human body (Harrington et al. 1993). Majority (>90%) caused by a direct impact to the shoulder. Fracture occurs in the middle or lateral third.
What is the treatment for a fractured clavicleRest and minimal movement – often with a sling Typically takes ~12 weeks before returning to full activity. Surgery is unusual unless it is a comminuted fracture.