case_images: PMC11723742_01
case_images: The first surgery included performing osteochondral autologous transplantation for a cartilage defect in the lateral femoral condyle (A and B) and lateral meniscus tear repair   and D).
case_images: JOCR-15-193-g001.jpg
case_images: PMC11723742_01_JOCR-15-193-g001.jpg
case_images: F1
case_images: At the age of 45, he had undergone OAT for the left LFC cartilage defect and lateral meniscus (LM) repair for a horizontal tear (Fig. 1).
case_images: Magnetic resonance imaging 18 years after the primary surgery. The lateral meniscus completely disappeared (indicated by the arrow in A), whereas the transplanted osteochondral plug in the lateral femoral condyle, including cartilage, still remained with a smooth surface (indicated arrow in B).
case_images: JOCR-15-193-g002.jpg
case_images: PMC11723742_01_JOCR-15-193-g002.jpg
case_images: F2
case_images: Magnetic resonance imaging (MRI) showed a cartilage defect in the medial femoral condyle (MFC) and disappearance of the LM, but the transplanted osteochondral plug in the LFC still remained (Fig. 2).
case_images: Re-arthroscopy 18 years after the primary surgery. The transplanted osteochondral plug in the lateral femoral condyle still remained (a), whereas the lateral meniscus was severely damaged (b).
case_images: JOCR-15-193-g003.jpg
case_images: PMC11723742_01_JOCR-15-193-g003.jpg
case_images: F3
case_images: ICRS cartilage repair assessment score was 10 (survival: 3, integration: 4, and macroscopic appearance: 3) (Fig. 3). In addition, the non-weight-bearing area of the lateral side of trochlear groove, which was the donor site of the primary OAT, was replaced with fibrocartilage-like tissue, and no apparent impingement was observed.