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Here are the clues. Preceding each clue is the number of letters in the answer.

Clue 1: 7 letters. Reduces angle of joint
Clue 2: 8 letters. Spins one bone relative to another
Clue 3: 11 letters. Movement forward
Clue 4: 10 letters. Movement backward
Clue 5: 9 letters. Increases angle of joint
Clue 6: 9 letters. Lift Upward
Clue 7: 10 letters. Downward Movement