Multifocal avascular necrosis at a young age without steroid use, alcohol, or trauma strongly suggests an underlying medical cause, and osteofos alone is often not sufficient you should undergo detailed blood tests to rule out thrombophilia autoimmune disorders
lipid abnormalities and rare metabolic or genetic conditions
HBOT and shockwave therapy may help reduce pain and improve blood flow in early stage pre-collapse AVN but they cannot reverse advanced disease
management depends on MRI staging of each joint, and early joint preserving treatment can delay progression especially in the hip. a tertiary-care orthopedic center with AVN expertise is strongly advised, as walking disability is not inevitable with timely, stage-appropriate care