Jo's bone broken in plastic surgery (4,3)
I believe the answer is:
nose job
'plastic surgery' is the definition.
(I've seen this before)
'jo's bone broken' is the wordplay.
'broken' is an anagram indicator.
'jos'+'bone'='josbone'
'josbone' anagrammed gives 'NOSE JOB'.
'in' acts as a link.
(Other definitions for nose job that I've seen before include "Schnozzle surgery" , "Piece of plastic surgery" , "Facial operation" , "Surgery of the face" , "Rhinoplasty" .)