TY - JOUR T1 - Hip arthrodiastasis combined with core decompression and diamond concept for postcollapse femoral head avascular necrosis JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2019-231081 VL - 12 IS - 8 SP - e231081 AU - Ioannis V Papachristos AU - James Rankine AU - Peter V Giannoudis Y1 - 2019/08/01 UR - http://casereports.bmj.com/content/12/8/e231081.abstract N2 - In postcollapse hip avascular necrosis (AVN), the femoral head cannot be salvaged, necessitating total hip replacement. We report a case of a 39-year-old woman who developed idiopathic femoral head AVN with marked symptoms and radiological evidence of articular surface collapse. We treated her with core decompression combined with the ‘diamond concept’ (implantation of bone marrow concentrate, a growth factor and bone graft substitute) and distracted the hip joint with external fixator. Four years postoperatively the articular surface has been restored and the patient reports excellent quality of life. Hip arthrodiastasis with core decompression and ‘diamond concept’ regeneration could be considered a treatment option in advanced AVN of the femoral head. ER -