A total of 145 patients with hip fractures (HF) were enrolled, 118 of which met the inclusion criteria and were included in the study (Figure 1): 15 patients were excluded because of antibiotic therapy at or up to two days before admission to the Rehabilitation Institute; three for chronic renal failure, six for chronic heart failure, and 3 for diabetes on insulin treatment. This evidence concerns the gene INS and diabetes mellitus.