Where should an incision to remove a section of the great saphenous vein begin?

The great saphenous vein is the longest superficial vein in the body and runs along the medial side of the lower limb. When planning an incision for the removal of a section of this vein, the incision typically needs to start in the area where the vein is most accessible and prominently located.

Starting the incision along the medial side of the ankle joint is appropriate because it directly corresponds to where the great saphenous vein begins to run along the surface before it ascends up the leg. This location allows for effective identification and dissection of the vein as it travels toward its termination at the femoral vein in the groin area.

In contrast, other locations mentioned would not provide optimal access to the vein. For instance, making an incision along the lateral surface of the leg wouldn't align with the vein's medial trajectory, and incisions on the plantar surface of the foot or anterior to the knee joint could complicate access and visibility to the great saphenous vein itself. Therefore, starting the incision along the medial side of the ankle joint is the most logical choice for effectively accessing and removing a section of the vein.