case_images: PMC11272518_01
case_images: (A) Right knee and (B) left knee. Fat-suppressed proton density-weighted images of coronal views show bilateral thickening of lateral tibiofemoral cartilages with contour deformity of the subchondral bone beneath the lateral femoral condyle cartilage.
case_images: fsurg-11-1395276-g001.jpg
case_images: PMC11272518_01_fsurg-11-1395276-g001.jpg
case_images: F1
case_images: The contour of the subchondral bone beneath the lateral femoral condyle cartilage was deformed, showing upward depression in the left femoral condyle and flattening in the right one (Figure 1).
case_images: (A) Right knee and (B) left knee. Fat-suppressed proton density-weighted images of transverse views show that the posterior cartilages covered on both lateral femoral condyles also get thicker than the medial ones.
case_images: fsurg-11-1395276-g002.jpg
case_images: PMC11272518_01_fsurg-11-1395276-g002.jpg
case_images: F2
case_images: The anterior and posterior cartilages covering both lateral femoral condyles were also thicker than the medial ones (Figure 2).
case_images: (A) Right knee and (B) left knee. Fat-suppressed proton density-weighted images of sagittal views show centrally displaced lateral menisci similar to the "central bow tie sign."
case_images: fsurg-11-1395276-g003.jpg
case_images: PMC11272518_01_fsurg-11-1395276-g003.jpg
case_images: F3
case_images: A band-shaped structure mimicking the "central bow tie sign" of both lateral menisci, presented as the connection of the anterior and posterior meniscal horns on two consecutive slices, was shown in the central joint sagittal view rather than in the lateral sagittal view (Figure 3).
case_images: (A,B) Fat-suppressed proton density-weighted images of sagittal views of the left knee and (C) schematic drawing of the meniscal structure of the left knee. Almost whole of the lateral meniscus of the left knee dislocates to the center of the joint.
case_images: fsurg-11-1395276-g004.jpg
case_images: PMC11272518_01_fsurg-11-1395276-g004.jpg
case_images: F4
case_images: Almost all the left lateral meniscus (Figure 4) and most of the right lateral meniscus were dislocated to the central portion of the joint near the cruciate ligaments, with increased signal intensity consistent with degeneration within the meniscal structure.