Wild about doctor of the thigh (7)
I believe the answer is:
femoral
'of the thigh' is the definition.
(I've seen this in another clue)
'wild about doctor' is the wordplay.
'wild' becomes 'feral' (similar in meaning).
'about' means one lot of letters goes inside another.
'doctor' becomes 'mo' (medical officer).
'feral' going around 'mo' is 'FEMORAL'.
(Other definitions for femoral that I've seen before include "Of or near the thighbone" , "Of the thigh artery" , "Lor, fame can relate to the thigh" , "Relating to the thigh bone" .)