The lumbar and sacral regions of the spine primarily control the legs. More specifically, the sacral region plays a more direct role.
The spine is divided into several sections, each responsible for different functions. The key regions for leg control are:
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Lumbar Region (L1-L4): While primarily controlling the abdominal wall, thigh, and external genitals, the lumbar nerves also contribute to leg function.
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Sacral Region (L4, L5, S1-S4): This is the primary region controlling leg movement and sensation, as well as the foot and thigh. Nerves in this region directly innervate the muscles responsible for these movements.
In summary, while both lumbar and sacral nerves contribute, the sacral region of the spine is most directly responsible for controlling the movement and sensation in your legs.
