Ospedale Maggiore (Italian) Great Hospital.
articulation a joint between bones.
synovial fluid the clear albuminous lubricating fluid secreted by the membranes of joint cavities, tendon sheaths, etc.
Cheery oh Dr. Valentini is trying to ingratiate himself with Catherine through the use of the British expression "cheerio." Hemingway's spelling indicates that his pronunciation isn't quite idiomatic.
