sorry for my english i'm german so i hope you'll get my problem.
10 Months ago i suffred a muscle strain in my quadriceps and had to stop heavy leg work. A few months ago i was almost back at my strength levels pulling and squatting. Then i pulled my adductor and i had to pause again.
Last week i was deadlifting with improved form, hips high, arched low back,lats engaged, pushing ground away.Last year i was pulling 400 for reps and no i just injured my low back, thoracic region with just 100.
I had this before a few years ago when i changed my form this way.Usually i pull with a slightly kyphotic back and had no problems ever. I got bascially the same injury 3 years ago, when i was doing BB rows with a arched back.
I'm quite hypermobile and especially in the thoracic lumbar region.Just where the christmas tree starts.Thats where my injury happened. I can bascially keep my low back flat and not hinge from the hips but from this lumbar thoracic region.I'm extremely hypermobile there, which must be genetic as so is my dad.
So my lower spinal erectors are rather weak, my upper are really strong as my lats and my traps.I'm inigrating hyperextesions, pullthroughs and some rack pulls to improve this deficit.
Now i'd like to know how to deal with this issue?Should i switch back to my sloppy cat arched back form or try to work with that improved more healthy form which got me injured?