Follow-up study of X-ray findings of ankylosing spinal hyperostosis. With reference to the development of OALL.:With Reference to the Development of OALL

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The purpose of this paper is to investigate roentgenologic development of ossification of the anterior longitudinal ligament to clarify the modality of progression. In this seriese, 19 patients with spinal injury were studied. All patients were male. The mean age of those at final follow-up was 59. 4 years with a range from 40 to 82 years old.On lateral roentgenograms, we measured the width of OALL and evaluated with regard to three points of view: 1. A standard of a research group of ossification of spinal ligament; 2. Ossifying progression related to the periods after injury; and 3. Ossifying progression related to the age.The main results found in this Ion g term follow-up study were as follows: 1) The progression of OALL were remarkable in thracic and lumbar spine more than that of cervical spine; 2) The modality of progression classified roughly into two groups. In one group it progressed slowly in a long period and in the other group after rapid progression in eary stage it did not increase or was rather reduced as time passed; and 3) In thracic and lumbar spine, the forms of their progression ossifying were similar to each other.
西日本整形・災害外科学会の論文