PMC6878778_01
Long-leg radiographs demonstrating bilateral medial unicompartmental knee replacements. Valgus deformity of the left knee with loss of lateral joint space.
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There was a prominent valgus (20 ) deformity of the left knee with loss of lateral compartment joint space with associated subchondral sclerosis and infarction of the lateral femoral condyle (Figures 1 and 2).
Weight-bearing AP radiograph of the left knee. Medial unicompartmental knee replacement in situ. Loss of lateral joint space, subchondral sclerosis, and infarction of the lateral femoral condyle.
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There was a prominent valgus (20 ) deformity of the left knee with loss of lateral compartment joint space with associated subchondral sclerosis and infarction of the lateral femoral condyle (Figures 1 and 2).
Weight-bearing AP radiograph of the left knee from nine months prior to presentation. Medial unicompartmental knee replacement in situ.
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These radiographic findings were not present on a radiograph taken at her first presentation with haemarthrosis nine months previously (Figure 3).
Clinical photo of the left knee with a lateral parapatellar exposure. Medial unicompartmental knee replacement in situ. Haemosiderin staining of the lateral femoral condyle.
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The lateral femoral condyle was delaminated, and the cartilage was haemosiderin stained (Figure 4).
Postoperative AP radiograph of the left knee. Revision left total knee in situ. Pin holes used for navigation are present distal to the stemmed tibial component.
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Radiographs showed good alignment of the revision left total knee replacement (Figures 5-7).
Postoperative lateral radiograph of the left knee. Revision left total knee in situ. Pin holes used for navigation are present distal to the stemmed tibial component.
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Radiographs showed good alignment of the revision left total knee replacement (Figures 5-7).
Long-leg radiographs demonstrating a medial unicompartmental knee replacement and revision left total knee replacement at six months.
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Radiographs showed good alignment of the revision left total knee replacement (Figures 5-7).