Flashcards

chapter 9

Brandon Marc Raik English 18 cards

Vertebral border- Between superior and inferior angles, attachment site of rhomboid and serratus anterior Axillary border-…

Cards in this deck (18)

1The Shoulder: Glenohumeral joint os the most mobile in the body. The shoulder complex includes: Clavicle, scapula, sternum, humerus, ribcage, sternoclavicular, acromioclavicular and scapular-thoracic (which is not a real joint)Shoulder girdle: Has 5 muscles that attach onto it
Sternoclavicular and acromioclavicular Allows movement of elevation, depression, upward and downward rotation, protraction and retraction
2Shoulder joint- scapula and hummerus Shoulder joint movements: flexion, extension, internal and external rotation, abduction, adduciton, horizontal abduction and adduction, hyperextension. 9 muscles that attach onto itScapula:Located superficially on the posterior side of throax. Will attach to trunk via ligaments. It is concave and will glide over convex posteior to ribs
In resting postion: located between rib 2 and 7 with vertebral border 2/3 inches laterally to spinous process
3—Vertebral border- Between superior and inferior angles, attachment site of rhomboid and serratus anterior
Axillary border- lateral side between glenoid fossa and inferior angle
Spine: projection on posterior side. running from medial border laterally to acromion- attachmant for middle and lower trap
4Coracoid process- projection on anterior side, attachment for pec minor acromion- broad flat area on superior lateral aspect, attachment for upper trap Glennoid fossa- concave surface that articulates with hummerus on superior lateral side above the axillary border below acromion processImportant landmarks on sternium:
manubrium- superior end attachment for clavicle and first rib
Body: middle part of sternum, attachment for remaining ribs
xiphoid- inferior part
5—s
6Upper trapO- occipital bone, nuchul ligament on upper cervical spinous process
I- Outer third of clavicle, acromion process
A- Scapular elevation and upward rotation
N- C3, C4, Cranial nerve 9 (accesory)
(line of pull is verticle)
7Middle trapO- Spinous process of C7 through T3
I- Scapular spine
A- Scapular retraction
N- C3,C4 Spinal accessory nerve Cranial nerve 9
(line of pull is horizontal)
8Lower TrapO-Spinous process of middle and lower thoracic spine
I-Base of scapular spine
A-Scapular depression and upward rotation
N- C3,C4 Accessory nerve
(line of pull more downward then horizontal)
9Levator ScapulaO- transverse process of first 4 cervical vertebrae
I- Vertebral border of scapula between superior angle and spine
A- Scapula evevation and downward rotation
N- 3rd and 4th cervical nerves and dorsal scapular nerve C5
10Rhomboid MuscleO- Spinous process C7 through T5
I- Vertebral border of scapula between spine and inferior angle
A- Scapulae retraction, elevation and downward rotation
N- Dorsal Scapular nerve
11Serratus AnteriorO- Lateral surface of the upper eight ribs
I- veterbral border of the scapula, anterior surface
A- Scapular protraction and upward rotation
12Pec Minor-o- Anterior surface, 3rd through 5th rib
I-Coracoid process
A- Scapular depression, protraction, downward rotation and tilt
N- medial Pec nerve C8 T1
13Retraction- Middle trap, Rhomboid Protraction- Serratus, pec minor Elevation- Upper trap, Levator, rhomboid Depression- lower trap pec minor Upward rotation- upper and lower trap, lower part of serratus Downward rotation- Rhomboid, levator, pec minor scapular tilt- pec minorScapular elevation, depression, protraction and retraction are linear motions
Scapular elevation- it moves up
Scapular depresison- moves down
Scapular protraction- = abduction
scapular retraction=adduction
Upward rotation- infeiror angle rotates up and away from vertrebal column
downward rotation- return to resting
Scapular tilt- shoulder joint goes into hyperextension
14Scapulohumeral rhythm- First 3- degrees of shoulder joint motion id pure shoulder joint motion. after that every 2 degrees of shoulder flexion and abduction the scapula must upwardly rotate 2 degreesSc joint- Articulation between the manubrium of the sternum and the clavicle. It is triaxial
Elevation and depression in frontal plane, Protraction and retraction in transverse plane
It is a synovial joint so has a joint capsule
15Ligaments- Sternoclavicular ligament Costalclavicular ligament interclavicular ligament
16AC joint- Connects the acromion process of the scapula to acromial end of clavicle Synovial joint, gliding motion, triaxial upward and downward roation in the plane of the scapula 30 degrees foward of forntal planeLigaments include: Acromioclavicular ligament, coracoclavicular ligament and coracromial ligament
17Scapulothoracic Articulation not a union between bones
18Force coupling: Muscles pulling in different directions to accomplish same motion upper trap pulls up, lower trap pulls downCommom pathologies:
Ac seperation
Clavicular fracture