The basic projections are A.P and lateral oblique
➢ Antero posterior (A.P):- The patient laid supine or erect, and slightly rotated to the affected side approximately 15° degrees.
The opposite side should be supported with pad when the supine position is used, the arm should be extended and the hand rotated outwards so that the palm is facing the tube.
Centering point: - Center 1inch (2.5cm) inferior to the coracoids process of the scapular.
➢ Lateral oblique: - from the previous position the arm and forearm should be abducted and flexed the elbow joint, with the forearm across the abdomen, and the forearm supported with the other hand.
Centering point: - Center to the head of the humerus.
Essential image characteristics,
The image should demonstrate the bones of the shoulder joint clearly, head of the humerus and the end of acromion and part of the scapula.
References:
MIT. Abdussalam A. Madaki and Cowen A.R (2019) Tutorial on the image quality characteristics of radiographic screen film combinations and their measurement, (medical Devices Directorate Evaluation report), MDD/94/34,ALTH.
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