Dislocation after total hip arthroplasty.

Dislocation after primary total hip arthroplasty is a frequent complication. This review investigates its circumstances, and incidences from 0% to 10% are reported due to different study designs and outcome availability, combined with the multifactorial causality influenced by patient-, implant-, and surgery-related factors. Accurate monitoring of this complication has not been possible in a register setting. However, a recent Danish study revealed the »true« 2-year incidence of dislocation and created an algorithm capable of identifying dislocations with high sensitivity, to reduce future dislocation rates.