Answer to Question 1
weight-bearing AP
Rationale: Weight-bearing views of the knee with either AP or PA projection can be applied. The femorotibial joints are typically imaged weight bearing and bilateral for purposes of comparison. Weight-bearing knees are ordered to determine candidacy for total knee replacement(s).
Answer to Question 2
reddening of the skin
Rationale: Erythema is the medical term for reddening of the skin.