Run in country producing injury (6)
I believe the answer is:
sprain
'run' is the definition.
(thesaurus)
'in country producing injury' is the wordplay.
'in' is an insertion indicator.
'country' becomes 'spain' (Spain is a country).
'producing injury' becomes 'r' (I am not sure about this - if you are sure you should believe this answer much more).
'spain' placed around 'r' is 'SPRAIN'.
Can you help me to learn more?
(Other definitions for sprain that I've seen before include "Pull" , "Muscle injury caused by wrench." , "unwelcome twist" , "Wrench (limb)" , "Wrench (ligaments)" .)