The phrase "arm area" is correct and usable in written English.
It can be used to refer to the specific region of the body that includes the arm, often in contexts related to anatomy, health, or injury.
Example: "The doctor examined the arm area for any signs of swelling or bruising."
Alternatives: "upper limb region" or "forearm section".
Looking at the homunculus in the figure above, the cortical leg area is supplied by the ACA and the arm area is supplied by the MCA.
For example, the leg area is at the top of the postcentral gyrus, but when there is a painful state in the periphery sciatica, for example the leg area of the cortex can enlarge and occupy some of the arm area.
"What the trial shows is you don't need to remove those lymph nodes, because you can actually treat under the arm area by radiotherapy instead.
Upper arm muscle area (UMA) was obtained by subtracting total upper arm area (TUA) by upper arm fat area (UFA).
The intracortical electrode arrays were placed subdurally in the arm area of M1 and PMd of the cerebral hemisphere contralateral to the hand performing the task.
The upper arm area was thoroughly examined for any irregularities.
He found that the central parts of Andromeda and the accompanying galaxies were resolved at very much fainter magnitudes than were the outer spiral arm areas of M31.
Furthermore, Hubble's estimates of star densities demonstrated that the stars in the outer arm areas of M31 are spread out with about the same density as in the Milky Way Galaxy system in the vicinity of the Sun.
Instead, infants activated the arm areas when observing both arm and leg actions.
In contrast, infants did not show somatotopically organised activation during action observation, but instead activated the arm areas when observing both arm and leg actions.
One-sample t-tests demonstrated that only in the Leg condition was the suppression over the lateral arm areas significantly different from baseline, t(14) = −2.236, p = .042.042
