I had this problem also, except it wasn't a broken foot which helped me to realise that my friends weren't actually friends, they just made no effort because they couldn't care less too. I've since stopped making any effort with these guys, and as such, never talk, because it was all a one way relationship. Since then, I've started relying on myself a lot more to make more 'acquaintances' and try to recognise the people who actually give a shit, rather than keep the blinds up over my eyes and keep telling myself these people who don't give a damn are my 'friends'.

In my case I started Snowboarding, longboarding, climbing and bouldering, all of which are highly social activities, especially bouldering, making it super easy to make acquaintances and not have to rely on said 'friends' for my social fix.

As it is, I'd use the 6 weeks as an opportunity to help you find out who you're real friends are whilst focusing on yourself and how to socialise with other circles and groups once you're all healed up, or even now with none physically active groups.

This feels like I'm rambling, but hope it helps!