In general, medical sleeve systems that at least partially support a patient's arm in a selected position are described. In one embodiment, an example support sleeve includes a proximal end that defines an arm opening, a distal end, a wall that extends between the proximal end and the distal end, the wall including an anterior side portion and a posterior side portion, and an access port located on the anterior side portion proximate the distal end. The support sleeve may be manipulated between first and second positions, and at least partially maintained in the second position during a medical procedure.
