Fig. 5.
Fluid detected in the (A) anterior and (B) medial compartments as a % of the total detected, assessed by virtual X-rays from μCT data for ex vivo joints and with lateral and AP X-rays of in vivo rabbit knees, and correlations showing similar flexion effects from both methods in the anterior compartment (C) and no effects in the medial compartment (D). The slopes of the regression lines through the X-ray and μCT data were each individually significant (P < 0.001, P < 0.0001) and not different than each other (P=0.99) in the anterior compartment, and not significant (P=0.86, P=0.30) in the medial compartment. *P < 0.05, **P < 0.01, ***P < 0.001.