What movement is controlled by the L2 myotome?

The L2 myotome primarily controls hip flexion due to its innervation of the iliopsoas muscle, which is the main muscle responsible for this movement. The iliopsoas is composed of two muscles: the psoas major, which originates from the lumbar vertebrae, and the iliacus, which originates from the ilium of the pelvis. Both muscles work together to flex the hip joint and bring the thigh towards the trunk.

When assessing myotomes, it's essential to understand that each segment of the spinal cord corresponds to specific muscles and movements. In this case, L2 specifically contributes to the hip flexor function, making it key for initiating movement at the hip.

Other options listed correspond to different myotomes: knee extension is primarily influenced by the L3 myotome, ankle dorsiflexion is controlled by the L4 myotome, and great toe extension is governed by the L5 myotome. Thus, hip flexion is the accurate representation of the function associated with the L2 myotome.