Back Pain Tips

I suffered a Sciatica pain about three months ago. Got partial relief after physiotherapy but the numbness, in lower part of the leg till bottom of toe, still persists. With passage of time it is giving signs of further increase.
During almost the same period, suffered a frozen-shoulder on left side with unbearable pain at different angles besides restricted movements.
Are both these problems interlinked?
Can anyone help by suggesting a set of exercises or a Homeopathic remedy? (Age 57 Years)