Which structure is closely related to the adductor longus muscle?

The adductor longus muscle is primarily associated with the profunda femoris artery, also known as the deep femoral artery. This artery is significant as it supplies blood to the deep structures of the thigh, including the muscles of the adductor group. As the adductor longus is located in the medial compartment of the thigh, the profunda femoris artery runs adjacent to these muscles and provides essential vascular supply to them.

This anatomical relationship is important for surgical considerations, as well as understanding the vascularization of the thigh, particularly in procedures involving the adductor muscles or when assessing injuries that may impact blood supply in the area.

In contrast, while the superficial femoral artery does supply the thigh and is located nearby, it mainly runs in the anterior compartment and does not have the same close relationship with the adductor longus. The great saphenous vein is superficial and runs along the medial aspect of the leg and thigh, thus is not closely related to the adductor longus in terms of its anatomical relations. A blood vessel crossing above the adductor longus may not necessarily indicate significance concerning vascular supply or relationships specific to the muscle. Therefore, the profunda femoris artery is the most relevant structure in this context.