APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The femoral nerve innervates the sartorius, pectineus, quadriceps femoris, and iliacus muscle of the iliopsoas. It receives nerve supply from the nerve roots L2-L4, innervating both the hip flexor and quadriceps muscle groups. The femoral nerve is also responsible for anterior thigh and medial leg sensation.

Detailed explanation-2: -The motor branches of the femoral nerve are the nerve to pectineus, nerve to sartorius and muscular branches to the quadriceps femoris. They innervate the flexors of the hip (pectineus, iliacus, sartorius) and the extensors of the knee (quadriceps femoris).

Detailed explanation-3: -The femoral nerve innervates the anterior compartment of the thigh except for the psoas major and minor, which are innervated by the anterior rami of the lumbar nerves (L1, L2, L3). The femoral nerve (L2, L3, L4) runs from the abdomen under the inguinal ligament to enter the later side of the femoral triangle.

Detailed explanation-4: -Function: The rectus femoris flexes the hip along with the sartorius and iliopsoas and extends the lower leg at the knee, working in conjunction with the other three quadriceps muscles. The rectus femoris muscle antagonizes the hamstring muscles at the knee and the hip.