These beginner yoga videos by Erica Vetra might be of the right level during recovery from injury. The morning video consists of 20 minutes of sun salutations, plus five minutes in boat pose: perfect for abs and back. The Star Wars video is fun; it has a sequel on youtube, also by Erica Vetra, called "Jedi Star Wars Edition 20-Minute Home Yoga Class Workout". I hope Grokker will add it here eventually, but in the meantime, the Jedi Star Wars yoga sequel may be found here:
https://www.youtube.com/results?search_query=jedi+star+wars+yoga+erica+vetra+psychetruth. Good luck!

Caveat: I am a new member with zero medical background... That said, I am finding five programs to be very helpful to me as I recover from a knee injury. Hope this helps - best wishes.

https://grokker.com/fitness/flexibility-and-balance/program/flexibility-and-control/5b2aa40759a78e3cd220e9d3

https://grokker.com/fitness/stretching-and-mobility/program/5-to-thrive/5bd7a4870552fe684750cfa0

https://grokker.com/fitness/abs-and-core/program/4-week-core-program-with-sam-skelton/57571803cc5f6ce437c5bb75

https://grokker.com/fitness/pain-relief-fitness/program/pain-relief-with-dr-kevin-fong/5f86107071167517fc6d2bc6

https://grokker.com/yoga/therapeutic/program/knee-health-therapeutics/5b2aa3d859a78e3cd220e9cf