Dislocations following total hip arthroplasty in patients with restricted spinopelvic movement: a narrative review

Dislocation remains one of the leading causes of failure after total hip arthroplasty (THA). Growing evidence shows that abnormalities in spinopelvic mobility significantly alter functional acetabular orientation during daily activities, predisposing to instability. This narrative review aims to summarize the relationship between spinopelvic mobility and dislocation risk after THA, describe the underlying biomechanical mechanisms, and highlight diagnostic tools and preventive strategies.