Dislocation after THA — Risk Factors & Management
Incidence 1–3% after primary THA; higher in revision. Risk factors: posterior approach, malpositioned cup (anteversion 25°, inclination >60°). Patient factors: neuromuscular disease, dementia, noncompliance. Management: closed reduction, bracing; revision for recurrent instability. Prevention: proper cup position, posterior repair, large femoral heads.
Practised by MCQ
10What is the incidence of dislocation after primary total hip arthroplasty (THA)?
mcqWhich surgical approach is associated with the highest dislocation rate after THA?
mcqWhat is a major modifiable risk factor for dislocation after THA?
mcqWhich of the following is part of the 'safe zone' for acetabular cup positioning?
mcqWhat is the initial management step upon confirming dislocation of a THA?
mcqWhich of the following factors is NOT considered a patient-related risk factor for dislocation after THA?
mcqWhat is the recommended management for recurrent dislocation after THA?
mcqWhich biomechanical principle is crucial for hip stability after THA?
mcqWhich of the following strategies can help prevent dislocation after THA?
mcqWhat is the most common direction of dislocation following a posterior approach THA?