The prosthetic bearing cylinder provided by this creation has a bottom.Most of them are separated from each other and connected with the bottom at one end.And extend the other end in a direction away from the bottom.So as to define the accommodation space between the bottom and the sides,In order to accommodate the amputated parts of human body,A restraint,Attached to the other ends of those sides,In order to locate the spatial positions of the lateral parts relative to each other,Accordingly,The user can adjust the relative positions of the sides.To change the volume and shape of the accommodation space,To fit the shape of the amputated part of the patient.And the binding part is used for binding to avoid deformation.So that these sides can be properly attached to the amputated part of the patient,Improve the convenience of use and comfort of wearing.本創作所提供之義肢承筒乃係包含了有一底部,多數彼此分開且以一端與該底部相接之側部,並以另端沿遠離該底部之方向延伸,從而於該底部與該些側部間界定出該容納空間,以容納人體斷肢部位,一拘束件,係設於該些側部之另端上,以定位該些側部彼此相對之空間位置,據此,使用者即可藉由調整該些側部彼此間之相對位置,以改變該容納空間之容積與形狀,使之與患者斷肢部位之形狀得以切合,並以該拘束件施以拘束避免變形,使該些側部得以妥適地貼接於患者之斷肢部位上,提高使用上的便利性與穿戴之舒適性。