I rotate shoes (newest pair for long run and slightly older ones for gym work and short runs). However - having gone through several injuries over the last decade, I would have to agree with our coach - err on the side of caution. You are back up and ready to run it would be a shame to take a risk on older shoes and end up injured again! You can always keep these shoes for the gym or shorter runs that offer less risk to your feet and knees.
Do you have any idea what the cause of the injury was from? If it could have been overuse, than you may want to give you shoes a shot and see how it goes. However, if you are not too sure, I would err on the side of caution and get re-fitted just to be certain that you are starting out on the right foot (pun intended of course)...
Try a few runs in them and see how your feet and knees feel. If you feel really sore, then you might try new shoes. The conventional wisdom (typical at running shoe stores) is that the cushioning in the midsole only lasts 4-6 months before it turns into concrete. You can try pushing it with your thumbnail, if it still gives, then it has some cushioning left.
Me, I've been going with the minimalist shoes lately, and they don't have a lot of cushioning (no big pillow of a midsole or heel lift). So the shoes can go longer and I've had a pair now that I finally quit using because the top fabric near the toes finally gave out.
I've only (and sadly) managed to rack up ~165 miles on my shoes this year due to my injury that put me out of running for 5 months. But these are the only shoes I have had for the entire year. Would you replace these shoes just yet or hold off?
I did not buy new shoes when I 'returned' from injury. I got a knee brace that stabilizes my knee cap to the nth degree and some amazing aline inserts at the MCM expo.
There was a person at the running shop who said I should get brand new cushion given my circumstance. Your thoughts? I did not want to run out and buy new shoes 'just because'.
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