Hi and thanks for using this medium,
It is important to watch her weight in case she is over weight or obese. Osteoarhritis with sciatica
considering the fact she has already had a surgical for this would require conservative treatment. Analgesics, Cartilage
protectors could be very useful. Sciatica could be well alleviated with non steroidal anti inflammatory drugs, steroids, intraspinal infiltrations of specific drugs and physiotherapy
. I do suggest you the opinions of a neurosurgeon and a rheumatologist
. Hope this helps and kind regards.