post-operative
adjective /ˌpəʊst ˈɒpərətɪv/
  /ˌpəʊst ˈɑːpərətɪv/
 (also informal post-op 
 [only before noun] (medical) /ˌpəʊst ˈɒp/
  /ˈpəʊst ɑːp/
)- connected with the period after a medical operation
- post-operative complications/pain/care
 - patients in the post-operative period
 
Oxford Collocations DictionaryPost-operative is used with these nouns:- complication
 - recovery