Questão jurídica principal
Whether the appointed medical expert had to recuse himself for prior involvement
Decisão extraída
Prior involvement alone did not create bias; recusal is required only if additional circumstances show the assessment is no longer open, especially if the first report was not neutral or objective.
Fundamentação extraída
A strict impartiality standard applies to medical experts, but an earlier unfavorable expertise does not by itself establish bias. Here, the allegation did not show that the new assessment was predetermined.