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Fig. 1 | Journal of Experimental Orthopaedics

Fig. 1

From: Open-wedge high tibial osteotomy for spontaneous osteonecrosis of the medial tibial plateau shows excellent clinical outcomes

Fig. 1

Evaluations of SONK lesion size and location using magnetic resonance imaging. a, b The size of the necrotic lesion was calculated as the percentage (anteroposterior (AP) = D/C, mediolateral (ML) = B/A) of the AP and ML width of the medial compartment in the sagittal (b) and coronal (a) planes. The ML width was defined as the distance between the medial intercondylar eminence and the edge of the medial tibial plateau. The AP width was measured on the sagittal plane passing through the center of the ML line. c, d The location of the necrotic lesion was divided into two by bisecting the ML lines in the coronal (c) planes. l, lateral; m, medial. In the sagittal (d) plane, the lesion area was also divided into equal anterior (a), central (c), and posterior (p) sections

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