Injury brings member to hospital (4)
I believe the answer is:
harm
'injury' is the definition.
(I know that injury can be written as harm)
'member to hospital' is the wordplay.
'member' becomes 'arm' (member can mean a limb).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'hospital' becomes 'h' (abbreviation for hospital on maps).
'arm' after 'h' is 'HARM'.
'brings' is the link.
(Other definitions for harm that I've seen before include "Hurt, injure" , "Hurt, maim" , "Short-long metric feet" , "Damage, hurt" , "Detriment" .)