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Osteochondritis Dissecans of the Knee

Basics Description A pathologic joint entity of localized bone necrosis with overlying cartilage injury Osteochondritis dissecans primarily affects the knee, but it is also seen in the hip (in late Legg-Calve-Perthes disease), elbow, and ankle. Osteochondritis dissecans occurs primarily in the 2nd decade of life, but it also is seen in children and older […]

Meniscus Tear

Basics Description A meniscus tear is an acute or degenerative injury to the meniscal fibrocartilage of the knee. Classification: Acute tear: Longitudinal (50-90%) Radial (6%) Flap (4%) Degenerative tear: Mostly horizontal cleavage or complex tears Epidemiology Acute tears occur mainly in adolescents and young adults, and degenerative tears predominate in the 40-60-year-old population. Degenerative […]