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Shoulder radioanatomy
Dr. Henock.N
Shoulder girdle
Shoulder girdle
4
Scapula
-flat,∆ bone-inferior angles lies ~ over lower border of 7th rib post (guide)4 main processes
Cont…
Clavicle
• S shaped, broad medial & lat. Ends.
• Diarthroidal Sternoclav & Synovial AC joints,
• Costoclav. (rhomboid) coracoclavicular & coracoacromial ligaments
Cont…
Cont…
12
Shoulder joint anatomy
• Humeral bone & GF • Glenoid fossa
shallow,covers1/3rdof hum. Head • Stability; Glenoid labrum (Fibro
Capsular (cartilageneous) ring deepen to the GF)
• Capsule is thickened ant. by ‘3 Glenohumeral ligaments
13
Shoulder Joint views
• AP view, external & internal rotation• Axillary view • Trans-scapular Y view • Posterior oblique view (Grashey view)
18
3.Posterior oblique view (GH Joint seen tangentially)
• Position; pt erect turned 30-35 deg to ward ‘side being x-rayed
• Tube; perpendicular to plate• Evaluate: humeral head
position relative to glenoid, • Posterior dislocation
24
Clavicular view
• AP • Angled view of ‘clavicle • Serendipity view- demonstrates Sternoclavicuar Joint (SCJ)
helpful for dislocation Supine with cassette under upper chest. Beam aimed at
clavicle or manibruim with 40 deg cephalad tilt
Cont…
Radiographically, ‘clavicles are always demonstrated on ‘frontal CXR: their medial ends are projected over ‘posterior aspect of ‘4th rib
26
Acromioclavicular joint
• Complex synovial joint b/n Clavicle & Acromion• ‘Conoid & trapezoid ligaments( together→
coracoclavicular ligament ) provide ‘principal stability of ‘joint
27
Imaging of AC joint
• Specific views for AC joints1. 30 deg. tube angled cephalad (demonstrate joint enface) 2. 30 deg. angled caudally (demonstrates it tangent)
Plays a crucial role in ‘DX of tendinous lesions Provide valuable information about bony contours & tendon calcification
Acromio-humeral space- <5mm is indicative of tear in ‘supraspinatus tendon.
28
Inferior cortex of the clavicle should align with the inferior cortex of the acromion
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Conoid tubercle
Superior angle of the scapula
30
AC joint space 3-8mm
The distance b/n coracoid process & clavicle should be 10-13mm
Thank u !