Sure hope the little one recovers
You are amazing to take this little one in
Doesn’t seem like he is using that leg in either video
Wonder if it’s a hip issue
Have you felt both legs to see if anything is out of place or feels a bit different
When baby walks does it leave the leg back or walk on it to the side or normal with toes curled
A little video bay help us to see
Usually a slipped tendon will cause swelling so the quicker we can figure it out the better
You upload the video to YouTube then post the link here