After breaking two hips, older relative wants new implant (7)
I believe the answer is:
ingrain
'implant' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for ingrain that I've seen before include "deeply impressed" , "Fix" , "Impress deeply on the mind" , "Raining? (anagram)" , "Make a habit" .)