Inclusion Criteria:  Patients aged ≥ 18 with unilateral symptomatic (e.g. pain) total hip arthroplasty Referred for MRI examination at the discretion of the treating physician Provision of signed and dated informed consent form No metal hardware in the body including contralateral hip arthroplasty No contraindication to MRI: defined as claustrophobia or presence of other MRI-incompatible devices  Exclusion Criteria:  History of revision hip arthroplasty Pregnancy (self-reported, or self-suspected) Hip arthroplasty surgery within one year of enrollment Clinical indication to administer intravenous contrast material during MRI