The PA wrist position: patient sits facing the image receptor with elbow flexed about 90°, forearm and wrist flat on the detector, palm down and fingers slightly curled to bring the carpals close. Center the x‑ray beam perpendicular to the midcarpal region (distal radius/ulna), include the distal third of the forearm and proximal metacarpals, and use appropriate collimation and marker.

Standard wrist radiographs include posteroanterior (PA), lateral and oblique views. Additional projections commonly used are PA with ulnar deviation or a dedicated scaphoid (Stecher) view to better visualize the scaphoid, a clenched‑fist view to assess scapholunate instability, and a carpal‑tunnel (tangential) projection for volar or hook-of-hamate pathology. Occasionally radial‑deviation or skyline views are obtained depending on the clinical question.

For a PA hand radiograph, center the x‑ray beam at the third metacarpophalangeal (MCP) joint. Position the palmar surface flat on the image receptor with fingers extended and close together, including the wrist. Direct the central ray perpendicular to the receptor at the level of the third MCP and collimate to include fingertips through the distal radius and ulna.

A left wrist X‑ray can diagnose fractures (scaphoid, distal radius/ulna), dislocations, bone alignment and healing, degenerative or inflammatory arthritis, growth‑plate injuries in children, bone infections, bone tumors or cysts, calcifications, and presence of foreign bodies or hardware. It also assesses joint‑space narrowing and bone‑density changes; soft‑tissue injuries often need follow‑up imaging (MRI or ultrasound) for detailed evaluation.

A PA (posteroanterior) view is a chest X‑ray taken with the patient standing facing the image receptor so the X‑ray beam passes from back to front. It’s usually acquired upright on full inspiration and reduces heart magnification compared with AP views, providing more accurate heart size and clearer lung and mediastinal detail. It’s the standard projection for routine chest radiography.

A PA (posteroanterior) hand X‑ray is a standard radiographic view where the X‑ray beam passes from the back (dorsal) to the front (palmar) of the hand with the palm flat on the detector. It visualizes phalanges, metacarpals and joints to assess fractures, dislocations, arthritis and other bone conditions. Proper positioning—palm down, fingers slightly spread—reduces overlap and aids diagnosis.