PMC3025369_01
Normal AP radiograph of left knee.
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Initial anteroposterior (AP) and lateral radiographs were reported as normal, but retrospectively a cystic swelling in the infrapatellar region could be suspected on the lateral view (Figures 1 and 2).
Lateral knee radiograph showing a soft tissue density lesion in the location of Hoffa's fat pad.
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Initial anteroposterior (AP) and lateral radiographs were reported as normal, but retrospectively a cystic swelling in the infrapatellar region could be suspected on the lateral view (Figures 1 and 2).
Axial/sagittal/coronal FD FS MRI showing a large multilocular cystic swelling arising from the ACL tibial footprint extending to the infrapatellar fat pad.
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Since the menisci demonstrated no pathology, a radiological diagnosis of an intra-articular ACL ganglion cyst was made (Figures 3, 4, and 5).
Para-sagittal and sagittal T2 FS MRI scans confirming a normal ACL signal and extensive extension of cystic lesion into Hoffa's fat pad.
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Since the menisci demonstrated no pathology, a radiological diagnosis of an intra-articular ACL ganglion cyst was made (Figures 3, 4, and 5).
Intraoperative images displaying normal lateral (a) and medial (b) menisci, intact ACL (c) surrounded by debris, and the view of the anterior/lateral knee joint following extensive shaving into the fat pad (d).
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Since the menisci demonstrated no pathology, a radiological diagnosis of an intra-articular ACL ganglion cyst was made (Figures 3, 4, and 5). Findings were of normal articular surfaces, normal ACL, and no meniscal pathology (Figure 5). Extensive suction assisted power shaving was conducted to remove this cystic material along with the surrounding fat pad (Figure 5).