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Muscles of the forearm
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Anatomically speaking, the forearm is the part of the upper limb between the elbow and the wrist joints.
On the anterior part of the elbow, there’s a triangular fat-filled pit, called the cubital fossa, which is where the majority of important nerves and vessels to the forearm and hand can be found.
Okay, before we start, it is important to know that, even though some of the muscles of the forearm attach proximally to the humerus, they still belong to the forearm.
The forearm is divided into two compartments, which are separated by the radius and ulna and the interosseous membrane running between them.
Next, is the posterior compartment, housing the extensors and supinators of the forearm.
Generally, muscles in the same compartment are innervated by the same nerve.
Muscles of the posterior compartment, on the other hand, are innervated by the radial nerve.
Now, the muscles of the anterior compartment are divided into three groups, or layers: superficial, intermediate, and deep.
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