- Dislocation is the cause of 15% of THA revision surgeries
- Surgeon factors : Component Positioning, Implant Choice, Surgical Approach
- Low-volume surgeons and patients with elevated BMI increase the risk of malpositioning
- No convincing evidence that fluoroscopic or robotic assistance helps
- Increasing the size of the femoral head (up to 38 mm) provides greater resistance to dislocation
- Dual-mobility designs also raise concerns about intraprosthetic dislocations
- Direct anterior and posterior approaches are both associated with a higher dislocation rate than the direct lateral approach
