PROBLEM TO BE SOLVED: To provide a side orthosis position controller of a traction therapy device facilitating a transfer, capable of excellently accommodating to an individual difference and performing traction therapy, with a patient in a relaxed state.SOLUTION: The traction therapy device 1 comprises: a lower-body sheet section 10 for supporting the lower body of a patient an upper-body support section 13 for supporting the upper body of the patient a side orthosis 8 coming into contact with a side part of the patient a lumbar orthosis 53 to be worn around the lumbar of the patient traction means 28 performing the traction therapy by applying, to an affected part, traction force in the direction of separating the side orthosis 8 from the lumbar orthosis 53 and a load detection section 30 for detecting the traction force that separates the side orthosis 8 from the lumbar orthosis 53 The side orthosis position controller of the traction therapy device can detect the contact of the side orthosis 8 with an armpit of the patient by a change in the detection value of the load detection section 30.COPYRIGHT: (C)2014,JPO&INPIT【課題】移乗し易く、個体差によく対応でき、リラックスした状態で牽引治療を実施可能な牽引治療器の脇装具位置制御装置を提供すること。【解決手段】 患者の下体部を支持する下体シート部10と、患者の上体を支持する上体シート部13と、患者の脇部に当接する脇装具8と、患者の腰部に取着する腰装具53と、前記脇装具8と前記腰装具53を離間させる方向に牽引力を患部に作用させて牽引治療を行う牽引手段28と、前記脇装具8と前記腰装具5を離間させる牽引力を検出する荷重検出部30とを有する牽引治療器1において、荷重検出部30の検出値の変化により、患者の脇下に前記脇装具8が当接したことを検知できることを特徴とする牽引治療器の脇装具位置制御装置である。【選択図】 図2