Arthroscopic treatment of iliopsoas tendinitis after total hip arthroplasty with acetabular cup malposition: Two case reports

Figure 4 Computed tomography scans of Case 2. A: Computed tomography (CT) scan taken immediately after perioperative dislocation to evaluate anteversion angle of acetabular cup and stem; B: CT scan taken 2 years after total hip arthroplasty, which demonstrated atrophy of the left iliacus muscle (arrow); C: Anteversion of the acetabular component, with an angle of 4 degrees and anterior prominence of more than 20 mm.