This patent describes a device to replace the proximal femoral head and neck. The uniqueness of the device is in its proximal design which incorporates a transverse tension bar which prevents failure of the femoral neck portion of the device in tension. This design characteristic permits the use of thinner materials which more closely resemble the elastic nature of bone itself while at the same time endowing the prosthesis with strength and resistance to failure. The device is designed to have a long intramedullary portion which would load the femur throughout its length as well as a modular attachment on its distal end for the insertion of a future knee replacement.