Joint that ought to be put before royalty! (8)
I believe the answer is:
shoulder
'joint' is the definition.
(shoulder is a kind of joint)
'ought to be put before royalty' is the wordplay.
'ought to' becomes 'should' (I've seen this before).
'be put before' is a charade indicator (letters next to each other).
'royalty' becomes 'er' (abbreviation for Elizabeth Regina).
'should'+'er'='SHOULDER'
'that' acts as a link.
(Other definitions for shoulder that I've seen before include "Old usher, oddly, is part of the body" , "Joint between the neck and arm" , "See 10" , "Upper body joint" , "Cut of meat" .)