Acetabular Liner | Core Friction Interface Component for Hip Arthroplasty

Product Overview

The Acetabular Liner is a key friction interface component in total hip arthroplasty systems. Installed inside the acetabular cup and working in tandem with the femoral head, it provides smooth motion support for the hip joint while enhancing implant stability. As a core component ensuring post-operative joint function and long-term implant survival, it is applicable to various hip replacement surgeries. Different liner types can be selected based on patients' clinical conditions (e.g., activity needs, dislocation risk).

Core Design & Technical Advantages

1. One-Cup-Multi-Liner Compatibility Design

A single acetabular cup can be paired with multiple liner types (Ceramic Liner, XPE 0° Liner, XPE 20° Liner). There is no need to replace the acetabular cup to match different patient needs, simplifying the component selection process for surgeons and improving surgical adaptation flexibility.

2. Exclusive Advantages of XPE High-Rim Liner

High-Rim Marking Design: The high-rim marking on the liner surface allows surgeons to quickly identify the installation direction during surgery, improving operation efficiency and reducing installation errors;

20° High-Rim Anti-Dislocation Structure: For patients at high risk of dislocation (e.g., those with high activity levels, soft tissue laxity), the 20° high-rim design effectively restricts excessive movement of the femoral head, reducing the risk of post-operative hip dislocation and enhancing implant safety.

Compatible Femoral Head Solutions

Large-Size Femoral Head Compatibility: Supports large-size femoral heads (available in 28/32/36/40mm, etc.), which can delay acetabular neck impingement, significantly expand hip joint motion range; meanwhile, it reduces the collision probability between joint components, further improving post-operative joint mobility (the larger the femoral head size, the more obvious the mobility improvement).

Two-Material Femoral Head Options: Compatible with CoCrMo alloy femoral heads and ceramic femoral heads. Based on patients' bone conditions and activity needs, combinations such as "alloy head + XPE liner" or "ceramic head + ceramic liner" can be configured to balance friction performance and cost-effectiveness.

Clinical Value

Adapt to Diverse Patient Scenarios: From low to high dislocation risk populations, from regular to high activity needs, the "one-cup-multi-liner + multi-size head" combination covers the personalized clinical needs of different patients;

Improve Post-Operative Safety: The 20° high-rim anti-dislocation design specifically reduces dislocation risk, making it an ideal choice for high-risk patients;

Optimize Joint Function Experience: The compatibility with large-size femoral heads greatly expands motion range, helping patients achieve joint mobility closer to that of a normal hip and improving post-operative quality of life.

Frequently Asked Questions (Q&A)

Q1: What is the main advantage of the "one-cup-multi-liner" design?

A: It can be paired with ceramic, XPE 0°, XPE 20° and other liners without replacing the acetabular cup, simplifying the component selection process for surgeons, improving adaptation flexibility to different patient needs, and reducing the complexity of surgical component preparation.

Q2: Which patients are suitable for the XPE 20° high-rim liner?

A: It is mainly suitable for populations at high risk of post-operative dislocation, including patients with high activity levels, those with soft tissue laxity, and patients with a history of dislocation. The 20° high-rim structure effectively restricts excessive femoral head movement and reduces the probability of dislocation.

Q3: Why can large-size femoral heads improve hip joint mobility?

A: Large-size femoral heads can delay impingement between the acetabulum and neck, expand the motion space of the femoral head, and reduce the collision probability between joint components-thus significantly expanding the hip joint's motion range and allowing patients to achieve joint mobility closer to normal post-operatively.

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