Crossword Genius

Ailment the long-term retired can get? (7)

Ross

I believe the answer is:

bedsore

I'm a little stuck... Click here to teach me more about this clue!

'ailment' is the definition.
The answer and definition can be both states of affairs as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'long-term retired can get?' is the wordplay.
I cannot quite see how this works, but
'retired' could be 'r' (abbreviation) and 'r' is located in the answer.
'get?' could be 'be' ('get' can mean 'come to be') and 'be' is located in the answer.
This explanation may well be incorrect...

'the' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times and The Sunday Times.
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