Zanca View (AC Joint View)
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Discussion:
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used to better visualized the acromio-clavicular joint by eliminating overlying structures;
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Technique:
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AP view w/ beam is directed at the a-c joint with 10 deg cephalic tilt;
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use 1/3 to 1/2 the voltage used for the AP shoulder view (soft tissue technique)
Zanca view
- used to better visualized the acromio-clavicular joint by eliminating overlying structures; - Technique: - AP view w/ beam is directed at the a-c joint with 10 deg cephalic tilt; - use 1/3 to 1/2 the voltage used for the AP shoulder view
Shoulder (Stryker notch view)
The Stryker notch view is a specialised projection of the shoulder frequently used to evaluate the articulation of the glenoid and the humeral head; it is an effective projection in assessing for Hill-Sachs lesions
Patient position
the patient is preferably erect
the midcoronal plane of the patient is parallel to the image receptor: the patient’s back is against the image receptor
the glenohumeral joint of the affected side is at the centre of the image receptor
the patient is turned toward the affected side to show the glenohumeral joint space; this is achieved by rotating the patient 30-45°
affected arm is abducted anteriorly and rested on the patient’s head while maintaining internal rotation (if possible)
Technical factors
anteroposterior inferosuperior axial projection
centring point
10-15 degree cephalad angle of the x-ray tube
mid-axilla at the level of the glenohumeral joint
Swan neck deformity
Swan neck deformity is a deformity of the digits that consists of:
hyperextension of the proximal interphalangeal (PIP) joints
compensatory flexion of the distal interphalangeal (DIP) joints
Among the many osseous abnormalities that may be seen in rheumatoid arthritis, the swan neck deformity is the culmination of multiple abnormalities in the hand. Specifically, the deformity arises from hyperextension of the proximal interphalangeal joint, while the distal interphalangeal joint is flexed.
