A hip seems fractured with stress (9)
I believe the answer is:
emphasise
'stress' is the definition.
(I've seen this before)
'a hip seems fractured' is the wordplay.
'fractured' indicates an anagram.
'a'+'hip'+'seems'='ahipseems'
'ahipseems' with letters rearranged gives 'EMPHASISE'.
'with' acts as a link.
(Other definitions for emphasise that I've seen before include "Stress, underline" , "Give extra importance to" , "Give extra weight to, stress" , "Mashes pie (anag.)" , "'Stress, accentuate (9)'" .)