Help pair out with adhesive for operation (3,11)
I believe the answer is:
hip replacement
'operation' is the definition.
(type of surgical operation)
'help pair out with adhesive' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'with' is a charade indicator (letters next to each other).
'adhesive' becomes 'cement' (cement is a kind of adhesive).
'help'+'pair'='helppair'
'helppair' is an anagram of 'hiprepla'.
'hiprepla'+'cement'='HIP-REPLACEMENT'
'for' acts as a link.
(Other definitions for hip replacement that I've seen before include "Inserted joint" , "Joint operation" .)