Increase ROM after lumbar #

for a young man who had L1 compression fracture due to a fall from height. Just took off the binder( >2months). very little mvt at the lumbar spine level, complain LBP due to overuse erector, instability at pelvic lumbar region. I gave him pelvic tilt, core training execise and ROM within pain free range, but what else I can do to increase the ROM of lumbar spine, eps flex/ext? Somebody told me no mob for #. I don't understand why.

One more question: how to decrease the pain on scalene due to a trauma? It is too close with big vessel, nerves, modality may not easy to use. Any other idea? I suspect pt have TOS, so I want to decrease the pain and inflam on scalene.

passive accesory mobilisation is only contraindicated to the area of fracture in this case IV joint above n below L1 other places u can give carefully ...if u give it at fracture site. the frature may re occur n delay healing
for scalene muscle start with the ice n ultrasound u can give tens to reduce pain . than once inflamation n pain subsides give scalene streches