['To demonstrate the usefulness of rearfoot transcutaneous oximetry to assess the peripheral arterial disease in diabetic patients with heel ulcer.', 'From our database of 550 critical limb ischemia diabetic patients followed after a percutaneous transluminal angioplasty, we have selected patients with below the knee arterial disease. Patients were grouped according to the dorsal transcutaneous oximetry value (Group A\xa0<\xa030\xa0mmHg; Group B\xa0≥\xa030\xa0mmHg). Patients of Group B had a second oximetry performed at the rearfoot, close to the lesion localized in all cases at the heel. Finally, the analysis of the arterial pattern disease has been done.', 'We selected 191 patients: Group A (151 patients), dorsal transcutaneous oximetry of 11.8\xa0±\xa00.7\xa0mmHg; Group B (40 patients), dorsal transcutaneous oximetry of 44.2\xa0±\xa010.1\xa0mmHg. In Group B, rearfoot oximetry was 20.5\xa0±\xa05\xa0mmHg, significantly lower than dorsal oximetry (p\xa0=\xa00.0179). The anterior tibial artery was involved in all patients of Group A. In Group B, the anterior tibial artery was involved in 15 subjects and never alone; the posterior tibial artery was involved in 20 subjects and in 11 cases alone. The peroneal artery was affected in 20 subjects and in 14 patients alone.'] Is rearfoot Transcutaneous Oximetry a Useful Tool to Highlight Ischemia of the Heel?