PMC9091388_01
AP radiograph of right hip taken at initial clinic visit (07/2013) demonstrates advanced collapse of the right hip with associated joint degeneration.
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F1
A 45-year-old African American male presented with right hip pain secondary to avascular necrosis of the femoral head, with collapse (Fig. 1).
(a) Post-operative AP pelvis radiograph taken day of index RTHA on 11/2013 demonstrates a Stryker MDM construct with ceramic femoral head. No radiographic signs of periprosthetic fracture of component malpositioning. (b) AP right hip radiograph taken 9-months status post index RTHA demonstrating a stable Stryker MDM construct with ceramic femoral head with no radiographic signs of periprosthetic fracture or component failure.
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F2
At the conclusion of the case, all components were deemed well-fixed, and the patient demonstrated appropriate leg length and range of motion intraoperatively (Fig. 2).
(a) AP pelvis radiograph taken day of injury on 8/2018 demonstrating a Stryker MDM construct with fractured ceramic femoral head. No radiographic signs of periprosthetic fracture or component loosening. (b) Axial and (c) coronal CT slices of right hip status post fall on 8/2018 demonstrating a ceramic head fracture with a significant amount of joint debris. (d) Intraoperative photograph of the retrieved ceramic femoral head component with 4 large main fragments and multiple smaller pieces.
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F3
Radiographs revealed gross deformity of the right femoral head, with fine, radiopaque particles adjacent to the joint (Fig. 3). CT scan confirmed fragmentation of the delta ceramic head without signs of other component failure or loosening (Fig. 3). Examination of the ceramic femoral head revealed 4 large main fragments with multiple smaller pieces (Fig. 3).