Primary hemiarthroplasty for treatment of unstable pertrochanteric femoral fractures (AO/OTA Type 31 A2.3) in elderly osteoporotic patientsSkender Ukaj, Bahri Gjyshinca, Vlora Podvorica, Fatime Ukaj, Granit Molliqaj, Arben Boshnjaku and Axel GamulinSICOT-J, 3 (2017) 31DOI: https://doi.org/10.1051/sicotj/2017013