case_images: PMC11803236_01
case_images: Hyperextended left knee joint.
case_images: gr1.jpg
case_images: PMC11803236_01_gr1.jpg
case_images: f0005
case_images: Upon examination at the hospital, the infant presented with hyperextended left knee, positioned at a 30-degree angle (Fig. 1).
case_images: Initial left knee AP X-ray showing left knee dislocation.
case_images: gr2.jpg
case_images: PMC11803236_01_gr2.jpg
case_images: f0010
case_images: Initial X-ray of left knee Showed left knee dislocation (Fig. 2).
case_images: Knee position after first long leg casting.
case_images: gr3.jpg
case_images: PMC11803236_01_gr3.jpg
case_images: f0015
case_images: Over the course of treatment, the infant underwent serial long-leg casting, achieving 30 degrees of flexion in the first week (Fig. 3, Fig. 4), 50 degrees in the second week and 90 degrees in the third week.
case_images: Normal appearing knee after third long leg cast.
case_images: gr5.jpg
case_images: PMC11803236_01_gr5.jpg
case_images: f0025
case_images: After cast removal, the left knee maintained a 90-degree flexed position, with passive flexion comparable to the opposite knee (Fig. 5).
case_images: X-ray of left knee showing normal finding.
case_images: gr6.jpg
case_images: PMC11803236_01_gr6.jpg
case_images: f0030