The Alter Cementless Hip Stem System is a modern femoral stem designed for primary total hip arthroplasty, featuring a bone-preserving philosophy, enhanced initial stability, and compatibility with minimally invasive surgical techniques. Its optimized tapered geometry and mediolateral fixation concept help achieve reliable implant stability while preserving proximal femoral bone stock. The system is intended for patients requiring primary hip replacement, particularly in bone-conserving and minimally invasive procedures.