Palma Shaw, MD (photo by Jim Howe) Palma Shaw, MD (photo by Jim Howe) Upstate vascular surgeon and wound care expert Upstate vascular surgeon and wound care expert Palma Shaw, MD, Palma Shaw, MD, explains the efforts made to help preserve the limbs of patients with arterial diseases. Certain conditions, including diabetes, can put a person at risk for needing amputation. She talks about the reasons some wounds don't heal and the role of a limb preservation team. explains the efforts made to help preserve the limbs of patients with arterial diseases. Certain conditions, including diabetes, can put a person at risk for needing amputation. She talks about the reasons some wounds don't heal and the role of a limb preservation team.