Sudden twists due, next bandaging muscle (10)
I believe the answer is:
unexpected
'sudden' is the definition.
(similar in meaning)
'twists due next bandaging muscle' is the wordplay.
'twists' indicates an anagram (I've seen 'twisting' mean this).
'bandaging' means one lot of letters goes inside another.
'muscle' becomes 'pec' (pectoral muscle).
'due'+'next'='duenext'
'duenext' anagrammed gives 'unexted'.
'unexted' enclosing 'pec' is 'UNEXPECTED'.
(Other definitions for unexpected that I've seen before include "Surprising" , "Not foreseen" , "Unforeseen" .)