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HRSK Rotating Hinge Knee System: Optimized Prosthesis Design by Top China Suppliers and Factory
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HRSK Rotating Hinge Knee System: Optimized Prosthesis Design by Top China Suppliers and Factory

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●Optimized Load Distribution

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Primary Prosthesis-Inspired Design:
The innovative tibia design supports 95% of the load, delivering enhanced stability and promoting natural load transfer, making it ideal for extensive use in China.

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● Patellar Tracking

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Consistent with Primary Prosthesis:
Engineered to maintain familiar biomechanics, facilitating seamless adaptation for patients while ensuring quality standards expected from trusted suppliers.

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● Modular Design for Bone Defects

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Compatible with JUST Knee System Augments:
This product effectively addresses severe bone defects, offering versatile reconstruction options tailored to the needs of surgical teams in factories across the globe.

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● Surgical Efficiency

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Same Basic Procedure as JUST Knee System:
Designed to minimize bone loss and utilize general instruments, this streamlined workflow enhances surgical efficiency without compromising quality.

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    Product Detail

    ✨Special Description

    Modular sleeves provide Intra-operative flexibility by accommodating bone defects of the Engh Type II and Type II

    Highly polished upper surface reduces postoperative wear

    Modular Sleeves Flexibility

    Augments with 187 Specifications

    Are available for patients with inadequate bone stock

    Augments Specifications

    Tibial Augment

    Designed to provide robust support and structural stability for tibial components.

    Tibial Augment

    Deepened and extended trochlear groove

    • Reduces patellar force throughout the range of motion
    • Alleviates patellar subluxation and dislocation
    Trochlear Groove Design

    The hinge mechanism of modularity

    • Stress transmission is buffered, significantly reducing cement-bone interface loosening.
    • The hinge structure prevents direct contact between the metal hinge axis and the metal femoral condyle, minimizing wear.
    • Designed so that 95% of the load is borne by the tibia, aligning with the load distribution of primary prostheses.
    • Gravity and joint surface stress are primarily supported by the tibiofemoral joint surface.
    Hinge Mechanism Modularity

    Design of the tibiofemoral anastomosis

    — High compatibility ensures direct contact between the femoral condyle and tibial insert throughout the entire range of flexion and extension, allowing for effective load-bearing.

    — The well-matched tibiofemoral joint surface also provides damping constraints at extreme flexion and extension positions: During prosthetic hyperextension, the anterior curvature of the HRSK comes into contact with the tibial joint surface. This interaction slightly separates the knee joint, preventing hyperextension impact. This design is intended to protect against hyperextension.

    Tibiofemoral Anastomosis Design

    🛠Special Instrumentation

    HRSK Femoral Condyle
    HRSK® Femoral Condyle
    Material Spec (mm) A/P (mm) M/L (mm)
    CoCrMo 2# R/L 57 61
    3# R/L 59 64
    4# R/L 61 66
    5# R/L 63 68
    6# R/L 66 71
    HRSK Tibial Bearing
    HRSK® Tibial Bearing (PS)
    Material Spec (mm) A/P (mm) M/L (mm)
    Germany UHMWPE 2# 14mm,16mm,18mm,20mm,22mm 41 63
    3# 14mm,16mm,18mm,20mm,22mm 43 67
    4# 14mm,16mm,18mm,20mm,22mm 46 63
    5# 14mm,16mm,18mm,20mm,22mm 48 67
    6# 14mm,16mm,18mm,20mm,22mm 51 79
    HRSK Tibial Tray
    HRSK® Tibial Tray
    Material Spec (mm) A/P (mm) M/L (mm)
    CoCrMo 2# 41 63
    3# 43 67
    4# 46 71
    5# 48 75
    6# 51 79

    📺Video Demonstration

    📖Technology Education

    Surgical Technique Manual Cover
    HRSK® Rotating Hinge Knee System
    Surgical Technique Manual
    Download PDF Document

    ❓Frequently Asked Questions

    💡 What clinical benefits do the modular sleeves in the HRSK® system offer?
    Modular sleeves provide crucial intra-operative flexibility by accommodating significant bone defects classified under Engh Type II, allowing surgeons to customize the fit based on patient-specific anatomy.
    💡 How does the hinge mechanism reduce wear and potential implant loosening?
    The hinge design prevents direct contact between the metal axis and the metal femoral condyle, minimizing friction. By buffering stress transmission, it significantly reduces the likelihood of cement-bone interface loosening.
    💡 How does the design protect the knee joint from hyperextension impact?
    During hyperextension, the anterior curvature of the HRSK interacts with the tibial joint surface. This creates a subtle separation in the knee joint that acts as a dampening constraint, effectively preventing hyperextension impact.
    💡 What materials are used in the components of the HRSK® Rotating Hinge Knee System?
    The Femoral Condyle and Tibial Tray are constructed from high-durability Cobalt-Chromium-Molybdenum (CoCrMo) alloy, while the Tibial Bearing is made from medical-grade Germany UHMWPE to ensure long-term wear resistance.
    💡 How is load distribution balanced in this rotating hinge knee system?
    The system is designed so that 95% of the load is borne by the tibia, closely mimicking the natural load distribution of primary prostheses, with joint surface stress supported primarily by the tibiofemoral joint surface.

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