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primary THR

primary THR


Cemented MS-30 Stems
The conical wedge form with rounded edges in the proximal section corresponds with the  necessary anatomical and biomechanical requirements:

  • Retention and utilization of the morphology of the intertrochanteric region with resultant rotatory stability.( Self-centering a favourable zone for cementing )
  • The main body of the cement mantle is subject to compressive forces. Tensile forces are restricted to the lateral shoulder where the cement merely has the function of a filling material
  • The implant does not have any sharp edges which eliminates stress concentrations and the resulting cement cracks
  • The MS-30 system consists of a range of stem sizes which allows for the appropriate filling of the medullary canal. Furthermore, an optimal thickness of the cement mantle can also be achieved.
  • The form and length of the implant, together with the distal centralizer, help to ensure self centering.

ZCA All-Poly Acetabular Cups are designed for cemented fixation. All cups can be inserted with the same dedicated instrumentation. The cups have a minimum polyethylene thickness of 6mm and each cup has four 3mm cement spacers to help maintain a uniform cement mantle. Preoperative planning is essential to a good outcome. There are three styles of ZCA All-Poly Cups. Initial choice of cup style can be made preoperatively, based upon examination of the patient, radiographs, and use of templates. Final assessment of cup size and style is made intraoperatively.

A Neutral Cup – Available in four ID sizes (22mm,26mm, 28mm, 32mm).

B Inclined Face Cup – A 10° inclined face is designed to help prevent dislocation in the   area in which the elevation is placed. Available in four ID sizes (22mm, 26mm, 28mm, 32mm).

C Snap-In Cup – Provides reduced equatorial geometry to help minimize the risk of dislocation. Available in a 32mm ID neutral face cup for greater stability and
range of motion.

The Original M.E. Muller Low Profile Cup is a forgiving polyethylene cup design which can be used for various indications, ranging from simple primary cases to difficult cases in revision. Depending on the pathologic situation, the cup can be implanted as a cemented cup alone or in combination with cages or rings. This reliable implant shows excellent clinical results for more than15 years and particularly convinces surgeons by its ease of use. The cemented fixation of the Original M.E. Muller Low Profile Cup allows immediate mobilization of the patient. This reduces costs and accelerates the patient’s Convalescence.




The CLS Spotorn Stem achieves primary stability through the press-fit principle. With its three – dimensional taper, the stem is forced (pressed) into the slightly undersized visco-elastic seat (fit) prepared in the cortical-cancellous bone of the metaphysic. The remodelling of the bone around the prosthesis shows that the tapered from promotes a predominantly proximal transfer of the forces. The tapered shape of the stem guarantees remarkable primary stability and ensures that this stability is maintained thanks to the self-stabilizing properties shows that the tapered shape of the implant favours a largely proximal transfer of load.

Trilogy AcetabularOffering a broad selection of shell and liner configuration, the Trilogy Acetabular System is design to help restore kinematic function by addressing the challenges associated with primary and revision Acetabular reconstruction. The full- hemisphere, modular system builds on the success of the Harris/Galante and HGP II Porous Acetabular Components. The complete range of sizes and options, combined with proven design features, make it possible to select an Acetabular component that meets both patient need and your preference.

Acetabular Liners for the Trilogy System are available in two types of polyethylene - our high-performing compression-molded standard polyethylene and Longevity Cross linked Polyethylene. Zimmer has a documented history of more than 20 years of clinical success with compression-molded polyethylene. It addresses the five key factors that impact polyethylene performance:  material, processing, design, sterilization and packaging.

Longevity Crosslinked polyethylene is produced using high-dose electron-beam radiation and an annealing process – fully cross linking broken molecular chains so that virtually no free radicals are left.

A high-performance material that meets the increased demands of young active4 patients and outperforms earlier versions of ceramic materials. Increase hardness offers resistance to scratching and subsequent wear. Better wetting characteristics offer enhanced lubrication and lower wear. Optimum composite balance combines hardness with increased bending strength.



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