One-stage revision arthroplasty in a patient with ochronotic arthropathy accompanied by joint infection: A case report

Figure 1 Brown-black pigment can be seen on both sides of the auricle and sclera. A: Left eye; B: Left ear; C: Right eye; D: Right ear.

Figure 2 Radiographs of the patient’s knee showed joint space narrowing and osteophyte formation. A: Coronal plane; B: Sagittal plane.

Figure 3 Magnetic resonance image of the patient's left knee revealed bone marrow edema. A: Coronal plane; B: Sagittal plane.

Figure 4 Intraoperative images show that the surface of the knee cartilage was dark brown.

Figure 5 One week postoperatively, the knee X-ray showed that the prosthesis was in a good position. A: Coronal plane; B: Sagittal plane.