Extensor surfaces are parts of the skin found outside a joint, like the front of the knees and elbows. Conditions like psoriasis and dermatitis herpetiformis often affect these extensor surfaces.

There are 24 muscles in the upper and lower arm, each controlling specific movements like bending and straightening. Arm muscles can be affected by injuries or disorders, which can lead to weakness ...

In recent decades, high-resolution ultrasound (HRUS) has revolutionized the morphological and structural evaluation of peripheral nerves and muscles, revealing details of the internal structure of the ...

An illustration of a magnifying glass. An illustration of a magnifying glass.