Proximal Femoral Nail Antirotation™ (PFNA) Versus Gamma Nail 3™ (Gamma3) for Intramedullary Nailing of Unstable Trochanteric Fractures

Inclusion Criteria: * Age 55 years and more * Patients with isolated, unstable, closed or type 1 open trochanteric fractures, classified as AO 31-A2 or AO 31-A3 * Definitive primary fracture treatment with PFNA or Gamma3 (defined inTable 1) within three days after the index event * Signed written informed consent (by the subjects or legal guardian) and agreement to attend the planned follow-ups Exclusion Criteria: * Pathologic fracture of any other cause than osteoporosis * Patients or legal guardian refusing to sign the informed consent form * Multiple trauma * Type 2 and 3 open fractures * Drug or alcohol abuse * Wound and/or bone healing disorders of any other cause than diabetes mellitus or smoking * Active malignancy * Expected life expectancy ≤ 3 months * Inability to walk independently prior to injury event (use of one stick is allowed. Not meeting inclusion criteria are bedridden, wheel-chair ridden and walker dependent subjects) * Neurological and psychiatric disorders that would preclude reliable assessment (eg,, Parkinson disease, Multiple sclerosis, severe depression) * Rheumatoid arthritis