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Case 1; Anteroposterior and lateral pelvis radiographs demonstrating left hip post-traumatic arthritis.
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A 58-years-old female presented with left hip post-traumatic osteoarthritis two years after open reduction and internal fixation for left acetabulum posterior wall fracture-dislocation (Fig. 1).
Case 1; Anteroposterior and lateral pelvis radiograph displaying left femoral head resorption following an intra-articular corticosteroid injection.
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Left hip plain radiographs and CT scan demonstrated destruction and resorption of the left femoral head (Fig. 2).
Case 1; Histological photomicrographs of the intraoperative femoral head fragments demonstrating A) Necrotic bony trabeculae with empty lacunae (arrows) adjacent to fibrotic bone marrow (hematoxylin and eosin x100). B) Significant bone marrow fibrosis (hematoxylin and eosin x200).
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A bone biopsy was taken from the remnant of the femoral head which confirmed the diagnosis of osteonecrosis and ruled out the presence of infection (Fig. 3).
Case 1; post-operative anteroposterior and lateral hip radiographs following total hip arthroplasty.
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At the latest follow-up of five years, she was satisfied with the left hip function, and no postoperative complications were noted (Fig. 4).
PMC7718135_02
Case 2; Anteroposterior pelvis radiograph demonstrating right hip osteoarthritis.
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She is known to have right hip osteoarthritis (Fig. 5), which failed conservative measures such as non-steroidal anti-inflammatories, and physical therapy.
Case 2; Anteroposterior and lateral hip radiographs displaying right femoral head resorption following an intra-articular corticosteroid injection.
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Right hip plain radiographs displayed right femoral head destruction and resorption (Fig. 6).
Case 2; post-operative anteroposterior and lateral hip radiographs following a total hip arthroplasty.
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Thereafter, a cementless right THA with ceramic on ceramic bearings was performed through the posterior hip approach (Fig. 7).
Case 2; A) Macroscopic photo showing femoral head fragmentation B) Histological photomicrograph (hematoxylin and eosin stain x40) of the intraoperative femoral head fragments demonstrating bony erosion with subchondral cysts surrounded by fibrosis.
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Bone biopsy was taken from the remnant of the femoral head which ruled out infection and confirmed the diagnosis of osteonecrosis (Fig. 8).