ZMR® Hip System Porous Revision
Proximal or Extensive Porous Fixation
The ZMR Porous Revision* Components offer a choice of proximal or extensive porous fixation options. These implants address varying degrees of bone loss and mismatch between the metaphyseal and diaphyseal regions. A variety of proximal body and distal stem combinations are available to address these issues while focusing on the goals of secure fixation and kinematic restoration.
*For femurs with inadequate proximal support, the ZMR XL Hip System should be used in combination with proximal allograft struts or other adjunctive reinforcement techniques. As with any femoral stem, if proximal support cannot be obtained, the patient should be warned of the increased risk of fatigue fracture of the stem.
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Porous Stem Options Straight and bowed Porous Stems are available in up to four stem lengths and up to 10 diameters to optimize patient fit. The Porous Stems are coated with plasma sprayed Tivanium® Alloy to allow for biological fixation.
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Spline Stem Options Straight and bowed Spline Stems are available in up to three stem lengths and up to 10 diameters to optimize patient fit. The coronal slot makes the distal stem more flexible allowing for easier stem insertion. |
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References
1. Emerson RH, Sanders SB, Head WC, et al. Effect of circumferential plasma-spray porous coating on the femoral osteolysis after total hip arthoplasty. J Bone Joint Surg. 1999;81-A;9:1291-1298.
2. Bourne RB, Rorabeck CH, Burkart BC, et al. Ingrowth surfaces – plasma spray coating to titanium alloy hip replacements. Clin Orthop. 1994;298:37-46.
3. Feighan JE, Goldberg VM, Davy D, et al. The influence of surfaceblasting in the incorporation of titanium-alloy implants in a rabbit intramedullary model. J Bone Joint Surg. 1995;77-A;9:1380-1395.
4. Zweymuller KA, Lintner FK, Semlitsch MF. Biologic fixation of a press-fit titanium hip joint endoprosthesis. Clin Orthop. 1988;235:195-206.
5. Lintner F, Zweymuller, Brand G. Tissue reactions to titanium endoprosthesis. J Arthroplasty. 1986;1;3:183-195.
6. Michelinakis E, Papapolychroniou T, Vafiadis J. The use of a cementless femoral component for the management of bone loss in revision hip arthroplasty. Hosp for Joint Diseases. 1996;55;1:28-32.
7. Hartwig CH, Bohm P, Czech U, et al. The Wagner revision stem in alloarthroplasty of the hip. Arch Orthrop Trauma Surg. 1996;115:5-9.
8. Crowninshield RD, Maloney WJ, Wentz DH, et al. The role of proximal femoral support in stress development within hip prostheses. Clin Orthop . In press 2004;4(10).
9. Data on file at Zimmer, Inc.
