Joint serves up something similar to deer caught on a French weekend (7)

I believe the answer is:

knuckle

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'joint' is the definition.
(knuckle is a kind of joint)

I can't explain the rest of the clue.

(Other definitions for knuckle that I've seen before include "Joint of a finger when the fist is closed" , "Bunch of fives" , "Finger bone" , "Projecting joint of a finger" , "Bone of the fist" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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