We incidentally noted distinctive high signal defects or fissures in the patellar articular cartilage on sagittal T2-weighted magnetic resonance (MR) images in 4 patients. At subsequent arthroscopy all 4 patients were found to have patellar chondromalacia. To determine the reliability of these signs, we retrospectively evaluated, in a blinded manner, sagittal T2-weighted MR images of the knee in 75 patients who were undergoing arthroscopic assessment of their patellar articular cartilage. We identified high signal defects or fissures in the patellar cartilage of 5 patients. Patellar chondromalacia was noted at arthroscopy in all 5 patients. Arthroscopy demonstrated patellar chondromalacia in an additional 21 patients with normal MR images. We conclude that high signal defects or fissures on sagittal T2-weighted images are useful signs of patellar chondromalacia. This single imaging sequence will, however, detect only a small number of the cartilage lesions that may be present.
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Conway WF, Hayes CW, Loughran T, et al. (1991) Cross-sectional imaging of the patellofemoral joint and surrounding structures. RadioGraphics 11:195
Fulkerson JP, Shea KP (1990) Current concepts review — disorders of patellofemoral alignment. J Bone Joint Surg [Am] 72:1424
Hayes CW, Sawyer RW, Conway WF (1990) Patellar cartilage lesions: in vitro detection and staging with MR imaging and pathologic correlation. Radiology 176:479
Insall J (1982) Current concepts review — patellar pain. J Bone Joint Surg [Am] 64:147
Lindberg U, Lysholm J, Gillquist J (1986) The correlation between arthroscopic findings and the patellofemoral pain syndrome. Arthroscopy 2:103
Noyes FR, Stabler CL (1989) A system for grading articular cartilage lesions at arthroscopy. Am J Sports Med 17:505
Outerbridge RE (1961) The etiology of chondromalacia patellae. J Bone Joint Surg [Br] 43:752
Yulish BS, Montanez J, Goodfellow DB, Bryan PJ, Mulopulos GP, Modic MT (1987) Chondromalacia patellae: assessment with MR imaging. Radiology 164:763
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De Smet, A.A., Monu, J.U.V., Fisher, D.R. et al. Signs of patellar chondromalacia on sagittal T2-weighted magnetic resonance imaging. Skeletal Radiol. 21, 103–105 (1992). https://doi.org/10.1007/BF00241832
- Magnetic resonance imaging (MRI)
- Sagittal T2-weighted imaging