Muller straight stem and Muller ll Cup

The Müller Straight Stem is a hip endoprosthesis for cemented anchoring in the femur that has been successfully implanted for decades and is one of the most frequently used cemented implants worldwide. Made of CoCrMo (ISO 5832-4) and equipped with a 12/14 cone, the Müller Straight Stem can be combined with both metal and ceramic femoral heads. A standard and a lateral version are available in 11 sizes each. The stems differ in length and offset. The CCD angle of 135° is the same for all stems. The fine groove structure supports good cement adhesion. Optionally available cement stoppers limit the cement depth. The fine structuring of the implant surface increases its size and optimizes anchorage with bone cement. The modular design of the system allows optimal individualized treatment of the patient, even at an advanced age. The Müller straight stem allows a primarily stable loading situation, especially in „softer“ bone, and can thus enable early mobilization of the patient. It also covers a wide range of indications and can be used for almost all primary cases and also for revisions. The Mueller II cemented polyethylene acetabular cup supports the cemented restoration of the acetabulum. With its wide range of internal and external sizes, the Mueller II cup covers a very wide range of indications. For optimal adaptation of the cup to the damaged acetabulum, the Mueller II cup is available with an outer diameter in increments of two millimeters. The minimum wall thickness of 6 mm is given for all sizes. The special hemispherical outer contour of this cup allows the best possible cement flow between the acetabulum the cup with minimal bone loss. To ensure radiographic visibility, all implants are equipped with a ring made of implant steel (ISO 5832-1). The dysplasia variants additionally contain a notch and a radiographic pin at the highest point. In order to prevent dislocation of the hip joint, the internal contour of the cup in the snap version was develope