First deadlifts and squats after back injury

[Brandon Hill]

I'm using Starting Strength to rehabilitate my back. (I was hospitalized due to low back injury.)

Below are my deadlift and squat videos as I begin my journey.

I would appreciate any corrections/suggestions that I can implement before I try moving up in weight so I don't end up in the hospital again.

Deadlift
Deadlift 2024.08.31 - Google Drive

Squat
My ankle dorsiflexion does not permit me to deep squat. I'm hoping that continuing to squat will increase my flexibility and allow me to get lower and lower over time.
Squat 2024.08.31 - Google Drive

Thanks in advance!

[Mark Rippetoe]

What exactly was the injury? Have either of you read the book?

[Martin Shenfield]

You need to sort your squat out. I don't really believe your ankle mobility issues. Can you sit in a chair? Most of them would be lower than what you're doing. My old mum can squat lower than that.

Also, wear a belt. You've been hospitalized for a low back injury. I put belts on from warmup 1 on deads and about halfway through for squats.

[Maybach]

Your ankles do not need to dorsiflex any further to reach sufficient squat depth.