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Tissue samples were taken from your upper ankle joint during an arthroscopy.

There are 2 bones in the lower leg, the tibia and the fibula. The tibia is on the inside of the leg. The fibula is on the outside of the leg. Both bones in the lower leg have an upper, middle and lower section. At their lower ends the tibia and fibula form the malleolus bones in the ankle. At the top of the ankle the lower ends of the tibia and fibula are connected to a bone at the back of the foot.

An arthroscopy first involves making a small incision in the skin. A thin tube is advanced through this incision. There is a camera at the top of the tube. The camera transmits images of the inside of the joint to a screen. Instruments such as forceps and scissors can be inserted into the joint through other small incisions.