Chondromalacia of the patella is characterized by a circumscribed primary degenerative fibrillation, fissuring and erosion of its articular surface. It occurs as a solitary local lesion or may be associated with other common causes of internal derangement of the knee joint. In either event, it has been shown to be a definite clinical entity. Pathologically, it is a localized form of arthritis deformans (so-called hypertrophic type). Further classification is superfluous because its somewhat variable manifestations are merely differences in degree. It was first clinically recognized by Büdinger in 1906 and again in 1908, who called it "fissures of the patellar cartilage." The more appropriate term chondromalacia originated with König in 1926. The foreign literature contains numerous references to this lesion, which have been apparently overlooked by many surgeons. It is evident that recognition of patellar diseases will help to clear up some heretofore obscure derangements of the knee joint. This
KULOWSKI J. CHONDROMALACIA OF THE PATELLA: FISSURAL CARTILAGE DEGENERATION; TRAUMATIC CHONDROPATHY: REPORT OF THREE CASES. JAMA. 1933;100(23):1837–1840. doi:10.1001/jama.1933.02740230015002
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