Inner Head

The Inner Head is a fundamental component of modern modular hip arthroplasty, serving as the primary articulating surface in bipolar systems and specialized total hip replacement (THR) constructs. This component is precision-engineered to provide a smooth, ultra-low-friction interface, ensuring fluid joint motion and the restoration of natural hip biomechanics. Whether used to manage femoral neck fractures or as part of a complex reconstruction, the inner head is designed for seamless integration with femoral stems and acetabular components.

Each head is meticulously machined from premium orthopedic-grade materials—including Stainless Steel, Titanium Alloy, and Cobalt-Chrome (CoCr)—to meet the rigorous mechanical demands of the human hip joint. The internal geometry is optimized for a secure, vibration-free taper lock with the femoral stem, while the external spherical surface is polished to a mirror finish to minimize wear on the opposing bearing surfaces.

Key Features & Benefits

• Advanced Material Selection: Available in high-strength Stainless Steel for proven reliability, Titanium alloy for lightweight biocompatibility, or Cobalt-Chrome for maximum hardness and superior wear resistance.

• Precision Articulation: The spherical geometry is machined to sub-micron tolerances, delivering a high-gloss finish that reduces frictional torque and protects the integrity of the joint’s bearing liners.

• Secure Modular Interface: Features a standardized internal taper designed for a rigid, “no-play” connection with modular femoral stems, preventing fretting and ensuring long-term stability.

• Biomechanical Optimization: Designed to restore the patient’s anatomical center of rotation, facilitating a more natural gait and improved functional recovery.

• Corrosion Resistance: Highly polished surfaces and medical-grade alloys ensure exceptional resistance to the biological environment, preventing material degradation over time.

Primary Clinical Applications

• Bipolar Hemiarthroplasty: Functions as the inner bearing within a bipolar shell, providing a secondary articulation point to reduce wear on the natural acetabulum.

• Total Hip Arthroplasty (THA): Serves as the femoral articulating component when paired with compatible acetabular liners in modular hip systems.

• Modular Hip Revision: Enables intraoperative flexibility, allowing surgeons to adjust component sizing or material without the need for full stem extraction.

• Trauma Reconstruction: A reliable and efficient solution for stabilizing fractures of the femoral neck in a wide variety of patient populations.

Buy Modular Hip Inner Heads Online

Equip your orthopedic trauma or reconstruction facility with components designed for precision, durability, and anatomical accuracy. Our Inner Heads provide the mechanical excellence and material diversity required to achieve successful clinical outcomes in both elective and trauma hip surgery. Available in multiple diameters and material grades to suit every surgical requirement and patient profile.