Very sorry to hear about that, Radek!
I met you in Lillooet early this summer (with Vasile...) on a KLR. Now I am also riding a KTM 950 towards Ushuaia.
Just got the link to your awesome video and saw the development of your attempt this year.
Good decision to withdraw and heal up properly! You will be even stronger and wiser next year and maybe I will be there to cheer for you!
Good luck and get better soon!