HA Coated Cementless Stem

Design of HA Coated Cementless Stem

Overview: The HA (hydroxyapatite) coated cementless stem is designed for total hip arthroplasty, focusing on enhancing osseointegration, stability, and range of motion.

Neck Features

1. Neck Angle:
   • 135-Degree Angle: Engineered to support natural hip biomechanics, improving movement and stability.
   • Highly Polished Surface: The polished neck reduces friction with the UHMWPE component, minimizing wear and enhancing longevity.
2. Standard Offsets:
   • Compatibility: Standardized offsets ensure compatibility with various acetabular components, accommodating diverse patient anatomies.
3. Reduced Proportionate Neck Geometry:
   • Increased Range of Motion: Streamlined neck design enhances articulation and flexibility, optimizing hip function.

Design Elements

1. Collarless Design:
   • Improved Motion: The collarless feature allows for better joint movement and decreases the risk of impingement, facilitating optimal joint function.
2. Proximal Trapezoid Cross Section:
   • Rotational Stability: The trapezoidal shape in the proximal section enhances stability during dynamic activities, ensuring a secure fit and effective load distribution.
3. Distal Quadrangular Section:
   • Enhanced Stability: The quadrangular shape in the distal section provides additional rotational stability, preventing unwanted motion during activity.
4. Vertical and Horizontal Grooves:
   • Enhanced Rotational and Axial Stability: These grooves increase surface area for osseointegration, improving fixation and stability in both rotational and axial directions.
5. Head Taper:
   • 12/14 Taper Configuration: This design ensures compatibility with standard femoral heads, promoting secure attachment and optimal load transfer during movement.