Femur NeckFemurBone DensityAbsorptiometry, PhotonOsteoporosisNeckHead and Neck NeoplasmsPostoperative ComplicationsNeck PainFemoral FracturesFemoral Neck FracturesFemur HeadTreatment OutcomeRetrospective StudiesFemoral NeoplasmsNeck InjuriesIntraoperative ComplicationsFollow-Up StudiesTime FactorsAssisted Living FacilitiesDiaphysesTibiaReoperationProspective StudiesTomography, X-Ray ComputedFracture Fixation, InternalBone NailsDiabetes ComplicationsRisk FactorsCarcinoma, Squamous CellFracture Healing