Ochronotic arthropathy of bilateral hip joints: A case report

Figure 1 X-rays of lumbar spine and left hip. A and B: Degenerative changes, lumbar vertebra spondylitis of lumbar spine; C: Pelvis indicated bilateral hip arthritis, aseptic necrosis of left hip joint of lumbar spine; D: Anteroposterior view of left hip; E: Lateral view showed disappearance of hip space and aseptic necrosis (stage 4) of left femoral head of left hip.

Figure 2 Magnetic resonance imaging of both hips. A: Aseptic necrosis of the left femoral head and left hip arthritis; B: Edema of right femoral head and cervical bone marrow; C: Bilateral acetabular cystic ischemia; D: Edema in the left gluteus maximus intermuscular space.

Figure 3 During second admission in July 2022, pelvis X-ray indicated a marked degeneration of the right hip. No joint space seen, loss of shape of the right femoral head.

Figure 4 Right femoral head during right total hip arthroplasty. Deformed femoral head, black and brown deposits were seen similarly as compared to his left femoral head.

Figure 5 Post-operative right hip X-ray. A: Anteroposterior view; B: Lateral view showed satisfactory prosthesis placement.

Figure 6 During surgery, the femoral head was black with a large amount of black and brown material deposits.

Figure 7 Post-operative right hip X-ray. A: Anteroposterior view; B: Lateral view showed satisfactory prosthesis placement.

Figure 8 Urine 24 h test. A: Morning urine after collection; B: Brownish yellow urine after 24 h rest.

Figure 9 Eye examination revealed yellow-brown plaques in both sclerae. A: Right eye; B: Left eye.