<b>Overview</b><br>The Alter cementless hip stem is a femoral stem designed for primary total hip arthroplasty. It follows a bone-preserving philosophy, delivers improved initial stability, and is compatible with minimally invasive surgical approaches. The optimized tapered geometry combined with a mediolateral fixation concept aims to maintain reliable implant stability while preserving proximal femoral bone stock. The system is intended for patients undergoing primary hip replacement with emphasis on bone-conserving and minimally invasive procedures.<br><br><b>Key features</b><br><ul><li>Oblique cutting increases anti-rotational stability</li><li>Contoured distal tip facilitates stem insertion</li><li>Reduced lateral shoulder enables preservation of the greater trochanter</li><li>Gradual taper design increases axial stability and helps avoid stem subsidence</li><li>Anteroposterior taper increases progressively by 0.2°</li><li>Primarily mediolateral fixation with 1.25 mm thickness increments</li><li>Mid-section sandblasted surface</li><li>Inwardly oblique distal tip to assist minimally invasive implantation</li></ul><br><br><b>Indications</b><br>Intended for primary total hip arthroplasty, particularly in procedures that prioritize bone preservation and minimally invasive access.<br><br><b>Additional product details</b><br>The design emphasizes preservation of proximal femoral bone stock through its tapered geometry and mediolateral fixation concept, targeting reliable primary stability and facilitating insertion in limited surgical exposures.<br><br><b>Technical specifications</b><br><ul><li>Design philosophy: bone-preserving femoral stem for primary total hip arthroplasty</li><li>Geometry: optimized tapered geometry; anteroposterior taper increases progressively by 0.2°</li><li>Fixation concept: primarily mediolateral fixation</li><li>Size increments: thickness steps of 1.25 mm</li><li>Surface finish: mid-section sandblasted</li><li>Distal tip: contoured and inwardly oblique to assist insertion and minimally invasive techniques</li><li>Intended use: primary hip replacement (bone-conserving and minimally invasive procedures)</li></ul>