Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SILLANPAA PJ,Femoral avulsion of the medial patellofemor al ligament after primary traumatic patellar dislocation predicts subsequent instability in men : a mean 7-year nonoperative follow-up study,Am J Sports Med,,,2009,37,8,1513-1521,https://cir.nii.ac.jp/crid/1570291225871405952,