shoulder radiologic anatomy

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Shoulder radioanatomy Dr. Henock.N

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Page 1: Shoulder radiologic anatomy

Shoulder radioanatomy

Dr. Henock.N

Page 2: Shoulder radiologic anatomy

Shoulder girdle

Page 3: Shoulder radiologic anatomy

Shoulder girdle

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Scapula

-flat,∆ bone-inferior angles lies ~ over lower border of 7th rib post (guide)4 main processes

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Cont…

Page 6: Shoulder radiologic anatomy

Clavicle

• S shaped, broad medial & lat. Ends.

• Diarthroidal Sternoclav & Synovial AC joints,

• Costoclav. (rhomboid) coracoclavicular & coracoacromial ligaments

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Cont…

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Cont…

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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

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Shoulder Joint views

• AP view, external & internal rotation• Axillary view • Trans-scapular Y view • Posterior oblique view (Grashey view)

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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

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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

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Cont…

Radiographically, ‘clavicles are always demonstrated on ‘frontal CXR: their medial ends are projected over ‘posterior aspect of ‘4th rib

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Acromioclavicular joint

• Complex synovial joint b/n Clavicle & Acromion• ‘Conoid & trapezoid ligaments( together→

coracoclavicular ligament ) provide ‘principal stability of ‘joint

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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.

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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

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AC joint space 3-8mm

The distance b/n coracoid process & clavicle should be 10-13mm

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Thank u !