Management of metal on Queen Elizabeth's leg joint (10)
I believe the answer is:
leadership
'management' is the definition.
(I've seen this before)
'metal on queen elizabeth's leg joint' is the wordplay.
'metal' becomes 'lead' (lead is a kind of metal).
'on' is a charade indicator (letters next to each other).
'queen elizabeth's' becomes 'ER's' (abbreviation for Elizabeth Regina).
'leg joint' becomes 'hip' (I've seen this before).
'lead'+'ers'+'hip'='LEADERSHIP'
'of' is the link.
(Other definitions for leadership that I've seen before include "Commander's attribute" , "Management" , "Had replies (anag.)" , "Those in charge" , "What editor gives" .)