Possible Clues:

• Hip replacement?
• Assuredly, in slang
• Outstanding, in dated slang
• 'Hi' follower
• 3 button letters
• "For sure," informally
• __ II, one of Janet Street-Porter's many contributions to youth television
• ___ Leppard (quintet with a one-armed drummer)
• "Fer shure!"
• Word before "Leppard" or after "Mos"