Primary spontaneous hematogenous osteitis of the patella is evidently quite unusual, according to the reported cases in a review of the literature on this subject. Also the diagnosis of this condition is rarely made early enough to prevent marked destruction of the patella and an extension of the infection. Chesky1 in 1923 made an extensive review and found thirty-five cases reported and added one of his own. Other cases have been reported by Christopher,2 Dillehunt,3 Martin4 and Sagel.5 The following case is of unusual interest:
Mrs. M. Y., aged 20, was seen Dec. 28, 1936, at St. John's hospital. Examination showed the right knee and the region just above and below to be swollen to about twice the normal size. The swelling extended about 8 inches (20 cm.) above the knee and 2 or 3 inches (5 or 7.5 cm.) below. This area of swelling was red and painful, and the skin over the knee joint was darkly mottled. The extremity was fixed
Flack FL. PRIMARY HEMATOGENOUS OSTEITIS OF THE PATELLA. JAMA. 1937;108(26):2199. doi:10.1001/jama.1937.92780260001008
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