AIBU to be angry he locked us in while ill?

If you have full cognitive capacity, yes you will.

Correct.
Nobody was locked inside the house.
Sure, the back door was locked.
But they could just let themselves out of the front door.
So easy.

Ah. So in fact nobody was locked in as they could all use the front door.

No you will not.

Some people live in flats or apartments and only have one front door. No other door. They're not all dying in fires.
The OP is not disabled.
And she can get up and down stairs:
"I was absolutely furious when I realised he had done this when I came downstairs"

And if you already know you can't go out the front door because of having had surgery or you live with a disability? Or the house is filled with smoke/the smoke is thicker and there's an orange glow that's more intense by the front door where maybe you might be able to hurl yourself down ten steps or more in the hope that you only break a few bones instead of succumbing to smoke inhalation?

It's very hard - and results in people dying in fires.

You will have an idea of which way to go if you already know the back door has been locked from the outside by your husband and you can't get out of it. Then you go to the front door instead.
It's not hard.

The OP says she cannot navigate the steep steps at the front of the property following an operation. Which means he effectively deliberately trapped her inside as much as he would by taking away a wheelchair.

I wouldn't like somebody who did that, either, even without the bit about being an abusive alcoholic and liar.

Amazing coincidence, you don't sound very nice either.

So your daughter and her boyfriend can use the front door? So saying you're all locked in is massively ott. Do you not like your husband? He's been away and come home ili, sent to sleep separately and wakes up to you being annoyed with him..Hope he stays in the hotel next time.

You should not be locked into your home from any door. You have no idea which way you will be able to go in the event of an emergency.

Being locked in your house means in the event of an emergency - such as a fire you are trapped until Emergency Services can break in to get you out, which increases the likely hood you're going to suffer from smoke inhalation and carbon monoxide poisoning and that's if you live through it. Get spare keys made and let him know that under no circumstances should he do this again. If he does I would start to be concerned for your safety.

So he's staying in the self contained annex but came over just to spread his germs, take the kettle? Do you not use this? And lock you in the house?

I dont you're over reacting. You had been considerate and left him supplies. He wasnt considerate at all. He locked you in the house so that he could come and go as he pleased. Could HE not use the front door with the steps? Its not ok to lock someone in the house needing to contact you to ask permission to get out.

With steep steps OP can't use. I suppose technically it is a fire escape though.

I admit that am very aware of fire risk, probably OTT for MN. I worked with a woman who got herself and her children out of the back door literally with a few seconds to spare, they had no chance to even grab a bag or anything. The fire was between them and the front door. They lost everything except what they were wearing, so I suppose I tend to think of worst case scenario. I am really careful about keys always in the same place, we have a fire escape window upstairs.

Anyway, I don't intend turning this into an argument, so I will bow out now.

Because it had nothing to do with quarantining and everything to do with making sure that he couldn't be discovered doing whatever it was he was actually doing out there.

If it 'wasn't at all clear from the OP', then how did I manage to deduce it from her post?
To quote a line from the OP within the text of her post:
"We have a front door".

WTAF, why don't you have a set of keys? My DH has one, I have one and and DD has one. (We also have a spare in the house and a spare in a lock box outside the house).

That wasn't at all clear from the OP, which is why I qualified my response by whether there was an alternative exit.

It's not dangerous because they could simply exit the house by the front door instead.🚶

If your house is big enough to have a self contained annex then why hasn’t it got a front door and why have you only got one key

in briefly husband took the back door key no one’s been imprisoned

Could you not have called and just said we need the key back your daughter and her partner could've used the front door

Having just one key for a door is ridiculous.

I’m severely claustrophobic due to a stepmothers preferred punishment method as a child, I’d divorce my husband in a heartbeat if he locked me in anywhere! I realise I’m on the extreme end of this spectrum.

OP has said he drinks too much and is likely an alcoholic but no where does she say he’s abusive.

She’s said he doesn’t want to spend time with her but that is not abusive.

It seems that he is working FT, caring for OP and is doing everything in the house because OP currently can’t.

He’s now ill and had a long journey, so likely not thinking straight.
But locking the door at night is the safest thing to do anyway.

For OP to imply he locked her in the house for any other reason is extremely malicious and not a nice person.

But you can still go out (via the front door)? I don't understand the rant. Nobody locked you in guys, you sound mad.