case_images: PMC10868484_01
case_images: Patient 1. (A) Preoperative radiographs showing navicular cortical irregularity and (B) MRI showing osteochondral lesions with the critical size dimensions of 11.4 mm x 7.6 mmx 8.7 mm.
case_images: 10.1177_24730114241229092-fig1.jpg
case_images: PMC10868484_01_10.1177_24730114241229092-fig1.jpg
case_images: fig1-24730114241229092
case_images: Repeat MRI then revealed hyperintense signal on T2 with cartilage delamination of the right navicular at the middle third of the dorsal aspect of the talonavicular joint, concerning for an OCL, measuring 11.4 mm x 7.6 mm x 8.7 mm (Figure 1).
case_images: Patient 1. Intraoperative photograph showing application of the micronized cartilage matrix mixed with bone marrow aspirate concentrate into the base of the defect after autologous calcaneal bone graft was used to level the osteochondral lesion to subchondral bone.
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case_images: We then mixed the BioCartilage with 2 mL of BMAC and laid it onto the surface of the defect (Figure 2).
case_images: PMC10868484_02
case_images: Patient 2 Preoperative radiographs (A), computed tomographic scan (sagittal (B), coronal (C)), and magnetic resonance imaging (D) showing persistence of the osteochondral lesion with cystic changes at the base of the defect after prior microfracture.
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case_images: PMC10868484_02_10.1177_24730114241229092-fig3.jpg
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case_images: He presented with a CT (Figure 3A) and MRI (Figure 3B) showing persistence of his OCL at the same location as the first case: dorsal-central articular margin of the talonavicular joint, measuring 3.9 mm x 6.2 mm x 5.3 mm.
case_images: Patient 2. Intraoperative photo.
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case_images: PMC10868484_02_10.1177_24730114241229092-fig4.jpg
case_images: fig4-24730114241229092
case_images: Returning to the recipient site, we microfractured the defect and used a K-wire to joystick the OATS plug into the center of the lesion, gently tamping down until the OATS plug sat flush with the articular cartilage (Figure 4).