Rita's broken bones (5)
I believe the answer is:
tarsi
'bones' is the definition.
(bones of the foot)
'rita's broken' is the wordplay.
'broken' is an anagram indicator.
'ritas' anagrammed gives 'TARSI'.
(Other definitions for tarsi that I've seen before include "collections of bones?" , "Parts of skeleton" , "parts of leg" , "Foot bones" , "Bones of the ankles and heels" .)