Dual Mobility Liner

Description

The Dual Mobility Liner is a sophisticated orthopedic component designed to redefine joint stability and patient mobility in total hip replacement (THR). Based on the dual-bearing principle, this liner features a unique configuration where a smaller femoral head articulates inside a larger, mobile polyethylene liner, which in turn articulates within a metallic acetabular cup. This “head-within-a-head” design significantly increases the effective head-to-neck ratio, providing an exceptionally high “jump distance” that makes it one of the most effective solutions for preventing post-operative dislocation.

By distributing motion across two distinct articulating surfaces, the Dual Mobility Liner enables a vastly improved range of motion and reduces the risk of mechanical impingement during daily activities. Manufactured from premium UHMWPE (Ultra-High-Molecular-Weight Polyethylene) or XLPE (Cross-Linked Polyethylene), the liner is engineered to provide an ultra-low friction interface, ensuring excellent wear resistance and extended implant longevity for both active and high-risk patients.

Key Features & Benefits

• Maximum Dislocation Resistance: The dual-articulation geometry provides unparalleled stability, making it the gold standard for patients with high-risk factors such as neuromuscular disorders or prior hip instability.

• Enhanced Range of Motion: Minimizes the risk of prosthetic-to-prosthetic impingement, allowing patients to achieve more natural joint movement and improved functional outcomes.

• Superior Wear Mechanics: Utilizing advanced XLPE technology, the liner offers high resistance to creep and fatigue, significantly reducing polyethylene debris and protecting the joint from osteolysis.

• Dual-Bearing Biomechanics: Features a two-stage articulation system—the internal articulation (femoral head to liner) and the external articulation (liner to acetabular shell)—which optimizes load distribution.

• Versatile Compatibility: Specifically designed for seamless integration with matching modular acetabular cups and standard femoral heads (22.2mm or 28mm).

Primary Clinical Applications

• Primary Total Hip Arthroplasty (THA): Indicated for patients at a high risk for dislocation, including those with elderly frail status, hip dysplasia, or lumbar spine stiffness.

• Revision Hip Surgery: Provides a critical stabilization solution for patients experiencing recurrent instability or those undergoing complex component exchanges.

• Trauma-Related Reconstruction: A reliable choice for treating femoral neck fractures in patients where long-term stability and immediate mobilization are paramount.

Buy Dual Mobility Liners Online

Equip your orthopedic facility with the next generation of hip stabilization technology. Designed to balance unyielding safety with fluid mobility, the Dual Mobility Liner is an essential component for trauma centers and surgeons focused on reducing complications and enhancing the quality of life for hip replacement patients. Available in a variety of sizes to ensure a precise anatomical match for every surgical case.