Dynamic Hip Screw Versus Proximal Femoral Nail in Treatment of Unstable Intertrochanteric Fracture of Femur AO/OTA Types 31 A2 and 31A3 in Patients above Sixty Years Old. A Comparative Study. Adv.med.j. 2023;4(1):85-89. doi:10.56056/amj.2018.49