Which motor level function is described as 'Has hip flexors - needs bracing and an AD, and still relies on arms for support'?

• A. L2
• B. T12
• C. L3
• D. L1-L2

Answer: (A)

Hip flexion is powered by the iliopsoas and is innervated at the L2 myotome. If someone has functional hip flexors, the motor level must be at L2 or above. In this scenario, despite having hip flexors, the person still requires bracing and an assistive device and relies on the arms for support, indicating that the ability to stand or ambulate independently is not present and other key muscles (like knee extensors and trunk muscles) are not functioning well enough. This pattern fits an L2 motor level: the most caudal key muscle with functional strength is the hip flexor (L2), and the remaining weakness necessitates external support. Higher levels (like T12 or L1-L2 with more trunk control) would typically show better upright control and less reliance on arm support, while a lower level (like L3) would usually imply knee extension is functional, reducing the need for arm-based assistance.