case_images: PMC11769846_01
case_images: MRI images of patient with Grade 2 osteoarthritis. Preoperative MRI imaging revealed a chondral defect (arrow) on the lateral femoral condyle (A and B). The thickness of the cartilage is 1.05 mm.
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case_images: Local cartilage defect of the lateral femoral condyle, tear of the lateral meniscus (Stoller IIIb) (Figure 1). 
case_images: Hydrogel implantation into the articular cartilage defect (defect on the supporting surface of the lateral condyle). (A) Cleaning of the defective area, determination of the defect size. (B and C) Microperforation of the defective area. (D and E) Dehumidification of the joint for better implantation of the hydrogel. (F) Implanted hydrogel.
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case_images: After assembling the application device, slow filling of the cartilage defect with hydrogel was performed (Figure 2). 
case_images: MRI images (A and B) captured after 12-month follow-up showed regeneration of articular cartilage. The white arrow indicates a cartilage lesion. The thickness of the cartilage is 1.56 mm.
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case_images: At 12 months after the operation the patient noted a pronounced decrease in pain syndrome, a repeat MRI was performed (Figure 3).