It sounds like you're dealing with spasticity -- spastic or tight muscles -- in your legs. That is pretty common with MS (and I see by your sign-off that you have been diagnosed with MS). You're right, issues with mobility, and specifically with legs, is often one of the early problems encountered by those of us with MS. If it's that noticeable to you, it is likely very noticeable to your family, but they're not willing to talk with you about
it. If you're doing a lot of wall-walking, you should ask your doctor about
using a cane..falling down can be extremely hazardous to your well-being: a seriously broken leg put me in a wheelchair some yers ago, and I never fully recovered sufficiently to walk again.
...I am not a doctor, nor health professional, and don't pretend to be one, here.....