Bones in state - one arm shattered (9)
I believe the answer is:
metatarsi
'bones' is the definition.
(I've seen this before)
'state one arm shattered' is the wordplay.
'one' becomes 'i' (Roman numeral).
'shattered' is an anagram indicator.
'state'+'i'+'arm'='stateiarm'
'stateiarm' anagrammed gives 'METATARSI'.
'in' is the link.
(Other definitions for metatarsi that I've seen before include "bones" , "Parts of the feet" .)