Injury needs no lies concocted (6)
I believe the answer is:
lesion
'injury' is the definition.
(lesion is a kind of injury)
'no lies concocted' is the wordplay.
'concocted' indicates anagramming the letters.
'no'+'lies'='nolies'
'nolies' is an anagram of 'LESION'.
'needs' is the link.
(Other definitions for lesion that I've seen before include "Injury or wound" , "A cut or wound in insole" , "Injury to living tissue" , "Damaged area of tissue" , "Flesh wound" .)