case_images: PMC3801231_01
case_images: Anteroposterior and lateral radiographs showed a slight degenerative change in the medial side of the knee
case_images: PAMJ-15-59-g001.jpg
case_images: PMC3801231_01_PAMJ-15-59-g001.jpg
case_images: F0001
case_images: A plain X-ray showed a slight degenerative change in the medial side of the knee (Figure 1).
case_images: Sagittal T1-weighted image showing inhomogenous high signal intensity of the intact ACL.
case_images: PAMJ-15-59-g002.jpg
case_images: PMC3801231_01_PAMJ-15-59-g002.jpg
case_images: F0002
case_images: MRI of the right knee showed an increased intraligamentous signal for the ACL with high inhomogeneous intensity and cracking of the external meniscus undisplaced (Figure 2, Figure 3).
case_images: Sagittal T2-weighted image showing increased intraligamentous signal intensity of the ACL.
case_images: PAMJ-15-59-g003.jpg
case_images: PMC3801231_01_PAMJ-15-59-g003.jpg
case_images: F0003
case_images: MRI of the right knee showed an increased intraligamentous signal for the ACL with high inhomogeneous intensity and cracking of the external meniscus undisplaced (Figure 2, Figure 3).
case_images: Arthroscopic view of the anterior cruciate ligament (ACL) over the right knee. (A and B) Yellowish discoloration and sclerotic lesions on the lateral portion of the ligament; (C) ACL after debridement
case_images: PAMJ-15-59-g004.jpg
case_images: PMC3801231_01_PAMJ-15-59-g004.jpg
case_images: F0004
case_images: We found some yellow and sclerotic lesions on the lateral portion of the ligament and excised these lesions as precisely as possible (Figure 4).
case_images: (Histological biopsy specimen from the ACL showing mucoid degenerative tissue (big arrow) and normal ligamentous collagen tissue (small arrow) (H&E, original magnification x40)
case_images: PAMJ-15-59-g005.jpg
case_images: PMC3801231_01_PAMJ-15-59-g005.jpg
case_images: F0005
case_images: Histological examination revealed fragments of mucoid degeneration of the ligament (Figure 5).