Adult Age Factors Aged Aged, 80 and over Arthroplasty, Replacement, Hip--adverse effects Bone Cements--therapeutic use Bone Transplantation Female Femoral Fractures--surgery Follow-Up Studies Fracture Fixation, Internal Hip Dislocation--etiology Hip Fractures--surgery Hip Prosthesis--standards Humans Male Middle Aged Multicenter Studies as Topic Osteoarthritis, Hip--surgery Osteotomy Postoperative Complications Reoperation Retrospective Studies Risk Factors Time Factors Treatment Outcome