Ding Z, Ling T, Mou P, et al. - This study was sought to present bone restoration after revision hip arthroplasty with femoral bone defects applying extensively porous-coated stems with cortical strut allografts. Forty-seven patients who had undergone revision total hip arthroplasty (THA) were retrospectively examined applying extensively porous-coated stems combined with cortical strut allografts and 75 patients without allografts and the minimum follow-up was 2 years. Researchers compared femoral bone remodeling signs, including stress shielding, bone restoration in bone defect area, distal cortical hypertrophy, and femoral width, between patients with and without cortical strut allografts. They also evaluated clinical outcomes between two groups. The evidence suggested that the application of cortical strut allografts can reduce the severity of stress shielding, augment osseous restoration in bone defect area and enhance femoral bone stock after revision THA applying extensively porous-coated stems.