Qantas or Thai Airways to London in economy with a bad back?

Hi Buddy. Just wondering whether Qantas would be a better airline for me then Thai Airways to London in Economy. I have three stress fractures in my back and need a comfortabe trip?

I'm pretty sure that Thai has better seat pitch than Qantas so you will have more leg room in economy. But have a look at seatguru.com to check out the individual stats for economy seats on both airlines.

Check out the aircraft type as well. It's hard to go past QF economyy in the A380...

Ohhhh I feel your pain ! A bad hip ,knee and ankle ! Can't do Europe in Y  so I'm afraid I have to turn left at the air bridge !  I know ,I know it's hard but someone has to do it !   All the best and I believe Thai has better pitch but all depends on aircraft type ! 

Qantas A380 economy is fantastic. For me, the little seemingly pointless foot net made a world of difference to comfort.