Circumferential edema assessment or volumetry?

Why did you choose to perform circumferential edema assessment instead of volumetry for Richard's condition?

a.	He presented with general edema throughout his hand and wrist.
b.	He presented with localized edema to his PIP joint with no edema in wrist or remaining digits.
c.	He presented with pain, muscular inhibition, and indications of poor nutrient exchange throughout his hand and wrist.
d.	He complained of a painful joint.

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