Pain on the inner side of the knee

No — but they often come together.

Arthritis pain comes from the joint itself. This comes from a small cushion just below and inside the joint, where three tendons attach. Many people have both, which is why treating only the arthritis leaves this pain behind. The tender spot tells them apart.

Because the knees press on each other.

Lying on your side with the knees touching compresses exactly the painful area for hours. A pillow between the knees usually settles the night pain within a week.

Often, and quickly.

A steroid injection into the bursa settles the pain in most people. It is not a cure on its own — the exercises are what stop it returning — but it can make the exercises possible.

Six to eight weeks with the exercises.

Some settle faster. If there is no change at all after six weeks of doing the exercises properly, come back — we will look again rather than continue the same thing.