Schutz R, et al. - Authors defined a chart of CRP threshold values beyond which early postoperative complications are likely by studying the early C-reactive protein (CRP) kinetics following proximal femoral fracture (PFF) surgery. Modelling of early postoperative CRP kinetics of PFF surgical patients was possible as a threshold value scale valid between day 1 and day 30. In the early detection of postoperative complications, this can be an additional tool, if without replacing the clinical examination two CRP values are above the threshold values, which remains the ‘gold standard’.