Final answer:
Medico-legal aspects for a PA wrist projection include proper identification, date of examination, facility name, radiographic markers, and strict adherence to patient confidentiality.
Step-by-step explanation:
The medico-legal aspects that must be on a PA wrist projection involve ensuring that the radiograph complies with legal requirements, including proper identification and documentation. This means that the patient's personal information, the date of the examination, and the institutional details, such as the name of the facility and the radiographic markers, should be clearly visible. In addition, it is crucial to maintain patient confidentiality and handle all aspects of the imaging process following legal and ethical standards.