To provide a buckle to be attached to a trunk orthosis with a temporary attachment function, and a wearer of the trunk orthosis can easily and easily maintain a sufficient tightening condition by pulling the side belt forward in the body direction, Provided is a buckle capable of completing final fixing.SOLUTION: A fixed plate 12 is provided at one end of two opposing side plates 11 with a screw hole 15 for mounting the main orthosis main body, a folding shaft 13 is provided at the other end, and two folds A mating protrusion 14 is formed, and the side plate is curved inwardly from the central portion to the end portion in the folded-back axial direction. It is preferable that the two engaging projections are inclined toward the screw holes.(FIG.【課題】体幹装具に取り付けるバックルに仮止め機能をもたせ、体幹装具の装着者が脇ベルトを体前方向に引き出す力のみで十分な緊縛具合を保持したまま簡単に脇ベルトの面ファスナーによる本固定を完了させることが可能となるバックルを提供する。【解決手段】対向する2つの側板11の一端に体幹装具本体取付用ねじ穴15が穿設された固定板12を設け、他端に折返し軸13を設け、折返し軸には2本の係合突起14が形成され、側板は中央部分から折返し軸方向の端部までが内方に湾曲している。2本の係合突起はねじ穴方向に向かって傾斜していることが好ましい。【選択図】図2
