Justification from literature

PROJECTION FOR TENDONITIS

AP shoulder 

The AP view provides a clear, frontal image of the glenohumeral joint, acromion, clavicle, humerus, and other bony landmarks.This helps identify structural abnormalities, which could contribute to or coexist with tendonitis (e.g., bone spurs, arthritis, fractures).The AP view is straightforward to obtain and does not require complex patient positioning.

It is the standard baseline for most shoulder assessments, allowing comparison with other specialized views if necessary.While the AP view doesn’t directly show tendons, it allows indirect evaluation of the tendon’s bony attachments and alignment.

Bone spurs on the acromion, visible in the AP view, are a common cause of rotator cuff impingement and tendonitis.