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J & S
Pectoral girdle (Quiz 3)
| Question | Answer |
|---|---|
| Major joints | 1) sternoclavicular, 2) acromioclavicular, 3) glenohumeral |
| Ligaments of the sternoclavicular joint | 1) anterior sternoclavicular, 2) posterior sternoclavicular, 3) interclavicular, 4) costoclavicular |
| Sternoclavicular articulation | Sternal end of clavicle articulates with first rib, two joint cavities and articular disc |
| Acromioclavicular articulation | between lateral end of clavicle and acromion process |
| Ligaments of acromioclavicular joint | 1) acromioclavicular, 2) coracoclavicular |
| Coracoclavicular ligament of acromioclavicular joint | 1) conoid ligament, 2) trapezoid ligament |
| Tendons | of rotator cuff muscles blend with capsule of the GH joint, providing additional support and stability |
| Ligaments of glenohumeral joint | 1) glenohumeral, (anterior and posterior) 2) coracohumeral, 3) transverse humeral |
| Movements of sternoclavicular articulation | elevation, depression, protraction & retraction, gliding |
| SC elevation | traps (upper), levator scapula, serratus anterior |
| SC depression | pec minor, subclavius, pec major, latissimus dorsi |
| GH movements | flexion, extension, abduction, adduction, medial & lateral rotation, horizontal abduction, horizontal adduction |
| GH flexion | deltoid (anterior), coracobrachialis, pec major |
| GH extension | deltoid (posterior), latissimus dorsi, teres major, teres minor, triceps (long head) |
| GH abduction | deltoid, supraspinatus, traps (upper), serratus anterior, pec major |
| GH adduction | pec major, latissimus dorsi |
| GH medial rotation | subscapularis, pec major, latissimus dorsi, teres major |
| GH lateral rotation | infraspinatus, teres minor |
| GH horizontal abduction | deltoid (posterior), infraspinatus, teres minor |
| GH horizontal adduction | pec major, deltoid (anterior) |
| Hypovascular | suprascapular region, contributes to increased tendonitis |
| Capsular patterns | movement related to twist of capsule in joint (tightens) |
| Capsular patterns of GH | abduction limited, lateral rotation more limited, medial rotation full with some discomfort, all with a hard "end feel" |
| Capsular patterns of AC | pain on horizontal adduction |
| Capsular patterns of SC | pain at extremes of motion |
| Bursae | subacromial/subdeltoid, subscapular; communication with GH capsule |
| Subacromial/subdeltoid bursa | fused, larger, on greater tubercle of humerus inferior to acromion |
| Subscapular bursae | smaller, inferior to coracoacromial ligament, sits on subscapularis muscle |
| Joint stability | passive, active |
| Passive joint stability | superior joint capsule & coracoacromial ligament, anterior & posterior GH ligaments, orientation of the glenoid fossa |
| Active joint stability | Rotator cuff muscle tendons, other extrinsic muscles acting on joint |
| Capsular twist | increased with abduction, decreased with flexion |
| Rotator cuff muscles | Tendons come together around humerus to make a cuff; supraspinatus, infraspinatus, teres minor, subscapularis |
| Humeral movers | teres major, latissimus dorsi, coracobrachialis, deltoid, pectoralis major, pectoralis minor, posterior serratus superior, subclavius, omohyoid |
| Subclavius | massage therapists muscle |
| Latissimus dorsi | bypasses scapula & goes from trunk to humerus; main extensor of humerus & with the pectoralis major the main adductor, the swimmers muscle, synergist in most scapular depression even though it doesn't attach to the scapula directly |
| Pectoralis major | bypasses scapula and goes from trunk to humerus |
| Subscapularis | main medial rotator of the humerus |
Created by:
rock-steady
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