Advanced Surgical Skills for Exposure in Trauma (ASSET) Advanced Surgical Skills for Exposure in Trauma (ASSET) uses human cadavers to teach surgical exposure of anatomic structures that when injured ...

Examination of the bilateral upper extremities and trunk revealed symmetric, violaceous, polygonal papules coalescing into plaques (Figure 1). Marked isomorphism (Koebnerization) was noted.

Fixation of an inflamed nerve in the foramen may cause a traction force on its origin from the upper trunk. This can cause widespread radiation of pain into the arm and forearm.