Baker W H, Barnes R W
Am J Surg. 1977 Mar;133(3):331-2. doi: 10.1016/0002-9610(77)90540-2.
Ankle pressures were obtained using Doppler ultrasound in fifty-seven patients undergoing forefoot amputations. Contrary to other reports, no amputations healed with a pressure of less than 60 mm Hg.