When considering uncemented or cemented THR, no direct evidence exists to evaluate relative performances. However, in contrast, bipolar HA resulted in better health-related quality of life beyond the first 2 years following surgery, compared to unipolar HA, in a study performed by Inngul et al. described that unipolar and bipolar HA appeared to produce equivalent clinical outcomes after 1 year 21. When considering unipolar or bipolar, Hedbeck et al. reported that the use of cemented or uncemented femoral components was associated with similar functional outcomes during 1 year 12. demonstrated that unipolar cemented HA has less reoperation, similar complications and mortality, better health-related quality of life, compared with IF 11. reported that unipolar uncemented HA offers less reoperation, similar mortality and function compared with IF 20, while Hedbeck et al. When considering uncemented and cemented HA, Parker et al. In addition, many meta-analyses and systematic reviews have assessed comparisons of IF versus HA 15, IF versus THR 16, cemented HA versus uncemented HA 17, unipolar HA versus bipolar HA 18, and THR versus HA 19. Numerous published randomized controlled trials (RCTs) concerning this topic have compared the efficacy of treatment among IF, THR, and HA 5, 6, 7, 8, 9, 10, 11, 12, 13, 14. Great attention should be paid to treatment these fractures. Notably, the indications for particular treatment modalities are very heterogeneous among orthopaedic surgeons, although establishing algorithms and hospital care pathways have recently been focused on 4. Thus far, treatments for displaced intracapsular femoral neck fracture have included closed or open reduction and internal fixation (IF), hemiarthroplasty (HA), and total hip replacement (THR). Even though the treatment history of femoral neck fracture is over 400 years old and has made considerable progress, numerous problems remain to be resolved because of above characteristics of the injury. Compared with other fractures, femoral neck fractures exhibit specific consequences in blood supply, displacement and shear forces, often resulting in fracture nonunion 2 and femoral head necrosis 3. Further, the incidence is increasing, with the number of femoral neck fractures projected to reach up to 6.26 million by the year 2050 1. In 1990, the estimated number of femoral neck fractures was 1.66 million worldwide, per year. Femoral neck fractures are among the most common orthopedic injuries in the elderly.
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