Systems, devices, and methods for multi-axis assembly

A multi-axis prosthesis assembly including resiliently closed contoured members is used to provide vertical and rotational motion for a lower extremity prosthesis. A shaft is positioned through the resilient bumper with a first prosthetic member fixedly attached to the shaft and engaging a first surface of the undulating member and a second prosthetic member including a lumen to movably receive the shaft. The prosthetic member is engaged to the elastic bumper with protrusions positioned in a recess of the elastic bumper, and the prosthetic member and the bumper are configured such that the protrusions from each member are offset from the protrusions of the other member, this results in a contoured appearance of the outer surface of the resilient bumper. 包括弹性闭合的波状构件的多轴假体组件被用于为下肢假体提供竖直以及旋转运动。轴穿过弹性保险杠来定位，其中，第一假体构件固定地附接到所述轴并接合所述波状构件的第一表面，并且第二假体构件包括管腔从而以可移动的方式接收所述轴。所述假体构件利用被定位在所述弹性保险杠的凹部中的突起而接合到所述弹性保险杠，并且所述假体构件和所述保险杠被配置成使得来自每个构件的所述突起都从另一构件的所述突起偏移，这导致了所述弹性保险杠的外表面的波状外观。