A digit amputation with a palpable posterior tibial pulse has what approximate chance of healing?

• A. 60%
• B. 75%
• C. 90%
• D. 100%

Answer: (C)

Good perfusion to the digit is a key predictor of healing after a digit amputation. A palpable posterior tibial pulse means arterial inflow to the foot is intact, supplying enough oxygen and nutrients for soft-tissue healing and helping the immune response fight infection. When perfusion is good, digits amputated tend to heal in the vast majority of cases, about nine out of ten. If the pulse were not palpable, healing would be less favorable due to ischemia risking necrosis or infection. So the approximate chance of healing in this scenario is about 90%.