The most common and most likely answer to this crossword clue is the 7 letter word FLEXION
I've seen this crossword clue in The Times
F
L
E
X
I
O
N
Buddy explains!

The straight part
We know that "bent condition" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bent condition = flexion.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FLEXION mean?
FLEXION noun- The act of bending a joint, especially a bone joint; the counteraction of extension.
- The state of being bent or flexed.
- Deviation from straightness.
- (grammar) The variation of words by declension, comparison, or conjugation; inflection.