例句與造句

1. Two previously popular forms of arthroplasty were : ( 1 ) " interpositional arthroplasty "', with interposition of some other inflammatory surfaces apart and ( 2 ) " excisional arthroplasty " in which the joint surface and bone were removed leaving scar tissue to fill in the gap.
2. It's difficult to find interpositional arthroplasty in a sentence. 用interpositional arthroplasty造句挺難的