The primary objective is to assess the impact of total hip arthroplasty versus hemi-arthroplasty (i.e., bipolar or modular unipolar) on rates of revision surgery at 2 years in individuals with displaced femoral neck fractures.
Secondary objectives are:
1. To examine the effect of total hip arthroplasty versus hemi-arthroplasty on health-related quality of life (Short Form-12, SF-12), functional outcomes and mobility (Western Ontario McMaster Osteoarthritis Index, WOMAC, and Timed Up and Go Test, TUG), and health outcome measures (EuroQol-5 Dimensions, EQ-5D).
2. To evaluate the effect of total hip arthroplasty versus hemi-arthroplasty on mortality, hip dislocation, hip instability, infection, peri-prosthetic fracture, implant breakage, implant loosening, and intractable pain due to wear of the acetabulum.