![]() Insertion: Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tibia.Origin: Lower part of the intertrochanteric line, the medial intermuscular septum and the aponeurosis of adductor Magnus.The vastus medialis is part of the quadriceps. Vastus Medialis: The vastus medialis is an extensor muscle found medially in the thigh that extends the knee. Insertion: Quadriceps tendon into patella, then via ligamentum patellae into tubercle of tiba.Origin:Upper part of intertrochanteric line.The vastus lateralis is the suggested site for intramuscular injection in babies less than 7 months old. The vastus lateralis arises from a series of flat, broad tendons attached to the femur, and attaches to the outer border of the patella. Vastus Lateralis: The vastus lateralis is the largest and most powerful part of the quadriceps, a muscle in the thigh. ![]() Insertion: Quadriceps tendon ( RF, vastus lateralis, vastus medialis, vastus intermedius) into patella, then via ligamentum patellae into tubercle of the tibia.Reflected head: Ilium above the acetabulum Straight head: Anterior inferior iliac spine The rectus femoris is situated in the middle of the front of the thigh. All four parts of the quadriceps muscle join the patella via the quadriceps tendon. Rectus Femoris: The rectus femoris is one of the four quadriceps muscles. The quadriceps is the great extensor muscle of the knee, forming a large fleshy muscle group covering the front and sides of the thigh. It then travels posteriorly to the common iliac arteries and laterally along the pelvic wall - towards the obturator foramen of the pelvis.Quadriceps Femoris: The quadriceps femoris also called the quadriceps, quadriceps extensor, or quads is the large muscle group that includes the four muscles on the front of the thigh. Fig 1 - Derivation of the obturator nerve from the lumbar plexus Anatomical CourseĪfter its formation, the obturator nerve descends through the fibres of the psoas major and emerges from its medial border. ![]() Innervates the obturator externus and adductor magnus muscles.Pierces the obturator externus muscle, and then descends in a plane between the adductor brevis and adductor magnus.Posterior division (posterior to the adductor brevis):.It then pierces the fascia lata to become the cutaneous branch of the obturator nerve. ![]()
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