Chammout, G., Kelly-Pettersson, P., Hedbeck, C. J., Stark, A., Mukka, S., Skoldenberg, O. HOPE-Trial: Hemiarthroplasty Compared with Total Hip Arthroplasty for Displaced Femoral Neck Fractures in Octogenarians: A Randomized Controlled Trial. JB & JS Open Access 2019; 2: e0059