The thigh is the region between the hip and the knee, containing powerful muscles, nerves, and blood vessels that enable movement and stability. The muscles of the thigh are divided into three compartments: the anterior (extensors), posterior (flexors), and medial (adductors). Major muscles include the quadriceps, responsible for knee extension, and the hamstrings, which are key for knee flexion. Nerves such as the femoral, sciatic, and obturator nerves control sensation and motor function in the thigh and leg. The femoral artery, the primary blood vessel in the thigh, provides blood supply to the lower limb. Understanding thigh anatomy is crucial for diagnosing injuries and guiding procedures, making it a focal point in musculoskeletal ultrasound.
The sonoanatomy of the thigh allows for detailed visualization of its muscles, nerves, and vessels. Using ultrasound, the quadriceps and hamstrings appear as hypoechoic (dark) muscle tissues surrounded by echogenic (bright) fascia. The tendons, which connect these muscles to the knee and pelvis, appear as bright, linear structures and are best examined dynamically. Nerves such as the femoral and sciatic nerves can be seen as hypoechoic structures with a distinct “honeycomb” pattern, allowing easy identification and differentiation from surrounding tissues. Blood vessels like the femoral artery are easily visualized, with arteries appearing as pulsatile anechoic tubes and veins being compressible. Ultrasound of the thigh is particularly useful for evaluating muscle injuries, tendon tears, nerve entrapments, and vascular conditions.
Subscription-based products are non-refundable. We recommend reviewing the details carefully before making a purchase.
