Anatomy of the Thigh

Summary:

This is a note about the anatomy of the thigh. The thigh is the region between the pelvis and the knee and is primarily composed of the femur bone. The surface anatomy of the thigh includes prominent muscles like the sartorius, quadriceps femoris, adductor longus, and hamstring muscles. The thigh is divided into three compartments: anterior, posterior, and medial, separated by fascia.

The anterior compartment muscles flex the femur at the hip and extend the leg at the knee. The posterior compartment muscles extend the thigh and flex the leg, while the medial compartment muscles adduct the thigh. The compartments have distinct innervations and blood supply.

The lecture also covered the femoral triangle and adductor canal, important landmarks in the anterior compartment. The femoral triangle contains the femoral nerve, artery, and vein. The adductor canal contains the saphenous nerve, nerve to vastus medialis, and terminal parts of the femoral artery and vein.

The medial compartment consists of muscles such as the adductor longus, adductor brevis, adductor magnus, and gracilis, which contribute to adduction and medial rotation of the thigh. The posterior compartment includes the hamstrings, including the biceps femoris, semimembranosus, and semitendinosus muscles, which are responsible for hip extension and knee flexion.

Overall, the lecture provided an overview of the anatomy, muscles, innervations, and blood supply of the thigh, offering valuable insights into this crucial region of the lower limb.

Excerpt:

Anatomy of the Thigh

Anatomy
– The thigh is the area between the pelvis and the knee.
– The single bone in the thigh (femur).

Surface Anatomy of the Thigh

• Surface features of the Thigh
  • Sartorius’s muscle
  • Quadriceps femoris muscle
  • Adductor longus muscle
  • Hamstring muscles
  • Femoral triangle

Anatomy of the Thigh
The thigh is divided into 3 groups of muscles called compartments:

• Anterior compartment
• Posterior compartment
• Medial compartment

These three compartments are separated by fascia.

Anatomy of the thigh
– The anterior compartment muscles of the thigh flex the femur at the hip and extend the leg at the knee.
– The posterior compartment muscles of the thigh extend the thigh and flex the leg.
– The medial compartment muscles all adduct the thigh.