An Externally Rotated PA Oblique Wrist Projection with Accurate Positioning

question 13

Multiple Choice

An externally rotated PA oblique wrist projection with accurate positioning demonstrates
1) the trapezoid and trapezium without superimposition.
2) an open radioulnar articulation.
3) the ulnar styloid in profile.
4) superimposition of the medially located carpals.

• A) 2 and 3 only
• B) 2 and 4 only
• C) 1, 3, and 4 only
• D) 1, 2, 3, and 4

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Definitions:

Social Planner

A hypothetical figure in economic theories who makes decisions designed to allocate resources efficiently and achieve social welfare objectives.

Private Cost

The expenses that a company or an individual incurs as a result of its economic activity, excluding any external costs.

Private Value

The value of a good or service to a particular buyer or group of buyers, which may differ from its market price or the value to other buyers.

Deadweight Losses

Economic inefficiencies that occur when supply and demand are not in equilibrium, usually due to government intervention like taxes or subsidies.