Conventional hip surgery in traumatology.- A century of experiments and experiences.- Technical properties of the DMS.- The analysis of hip compression screws made of implant steel under static and limit load requirements.- Implants and instruments.- Radioanatomy.- Abnormal radiographic anatomy of the proximal femur.- Fracture classification at the proximal femur.- Statistical items.- Surgical technique for fracture treatment.- Operative procedure.- Operative procedures (Case reports).- The prognosis of the femur neck fracture after headpreserving osteosynthesis.- Intermediate DMS (2/3 implant).- Stabilization of intertrochanteric fractures with the Dynamic Martin Screw (DMS).- The 31A 3-3 fracture: an unstable problem.- Subtrochanteric femur and proximal femur shaft fractures.- Application of the Dynamic Martin Screw (DMS) in the intertrochanteric osteotomy.- Distal femur fractures.- Pathologic fractures and osteolyses at the femur.- The use of an innovative femur neck prosthesis in case of complications after hip fracture surgery.- Exceptional indications.- Additional and adjuvant measurements and procedures.- Systemic antibiotics in the prophylaxis and therapy of postoperative infections in patients with osteosynthesis of the femur.- Prevention of venous thromboembolism in hip surgery.- Physiotherapy after surgery for proximal femur fractures.- Operative revisional management.- Evidence-based drug treatment of osteoporosis.- Closing remarks.