Symphonie Aqua Line – the hydrostatic plaster impression for accurately fitting prosthetic sockets The innovative Symphonie Aqua System makes it possible to ascertain the residual limb’s burden within the prosthetic socket under actual conditions and to produce a properly fitting plaster impression while bearing a full weight load. The hydrostatic pressure enables the exact anatomy to already be determined while taking the plaster impression, that is, before the test socket is produced. At the same time, soft tissue situations, bony structures, pressure points as well as scarred and sensitive areas can be optimally reproduced. The impression and consequent socket align with the anatomy of the residual limb. Accordingly, the hydrostatic system has provided total surface weight bearing, a worldwide first.