Risk factors for early dislocation after total hip arthroplasty: a matched case-control study.

Purpose: To evaluate risk factors for early dislocation after primary total hip arthroplasty (THA).

Methods: Records of 175 cases with dislocation during hospitalisation after THA and 651 controls without dislocation were reviewed. Cases and controls were matched for age, gender, body mass index classification, primary diagnosis, cup design, hospital, and year of intervention.