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HRSK Rotating Hinge Knee System: China Suppliers and Factory Solutions for Optimized Load Distribution and Bone Defects
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HRSK Rotating Hinge Knee System: China Suppliers and Factory Solutions for Optimized Load Distribution and Bone Defects

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● Optimized Load Distribution for Enhanced Stability

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Innovative Primary Prosthesis-Inspired Design:
The tibia is designed to bear 95% of the load, ensuring superior stability and efficient natural load transfer, making it ideal for practitioners and patients alike.

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● Superior Patellar Tracking Mechanism

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Seamless Integration with Primary Prosthesis:
Our design is consistent with primary prosthesis biomechanics, enabling easy adaptation and improved outcomes for patients, crucial for China’s advancing orthopedic landscape.

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● Modular Design for Addressing Bone Defects

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Compatibility with JUST Knee System Augments:
Effectively tackles severe bone defects, offering versatile reconstruction options that cater to diverse surgical needs, making our products a preferred choice among suppliers and factories in China.

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● Enhanced Surgical Efficiency

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Streamlined Procedure like the JUST Knee System:
Designed to minimize bone loss, our knee prosthesis allows for the use of general instruments, ensuring a smoother workflow for surgeons and enhanced operational efficiency.

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    Product Detail

    Special Description

    Modular sleeves and highly polished upper surface

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

    Highly polished upper surface reduces postoperative wear.

    Augments with 187 Specifications

    Augments with 187 Specifications

    Are available for patients with inadequate bone stock.

    Tibial Augment

    Tibial Augment

    Deepened and extended trochlear groove

    Deepened and extended trochlear groove

    Reduces patellar force throughout the range of motion.

    Alleviates patellar subluxation and dislocation.

    The hinge mechanism of modularity

    The hinge mechanism of modularity

    Stress transmission: Buffered, significantly reducing cement-bone interface loosening.

    Hinge structure: Prevents direct contact between the metal hinge axis and the metal femoral condyle, minimizing wear.

    Load bearing: 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.

    Design of the tibiofemoral anastomosis

    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.

    Damping constraints: 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.

    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# 14/16/18/20/22mm 41 63
    3# 14/16/18/20/22mm 43 67
    4# 14/16/18/20/22mm 46 63
    5# 14/16/18/20/22mm 48 67
    6# 14/16/18/20/22mm 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

    Technology Education

    HRSK Rotating Hinge Knee System Manual Cover
    HRSK® Rotating Hinge Knee System
    Download PDF Button

    Frequently Asked Questions (FAQ)

    What clinical advantages do the modular sleeves offer in the HRSK® system?
    The modular sleeves provide excellent intra-operative flexibility, allowing surgeons to accommodate severe bone defects of both Engh Type II and Type III effectively.
    How does the hinge mechanism protect the joint from wear and loosening?
    The design buffers stress transmission to significantly reduce cement-bone interface loosening. Additionally, the hinge structure prevents direct metal-on-metal contact between the hinge axis and the femoral condyle, minimizing long-term wear.
    What materials are used in the construction of these knee components?
    The Femoral Condyle and Tibial Tray are constructed from durable CoCrMo (Cobalt-Chromium-Molybdenum) alloy, while the Tibial Bearing is made from high-grade Germany UHMWPE (Ultra-High-Molecular-Weight Polyethylene) for optimal wear resistance.
    How does the trochlear groove design assist in patellar stability?
    The trochlear groove is deepened and extended to reduce patellar force throughout the entire range of motion, which helps alleviate patellar subluxation and dislocation.
    What is the load-bearing design of the tibiofemoral joint surface?
    The system is designed so that 95% of the joint load is borne by the tibia, aligning with the physiological load distribution of primary prostheses. High compatibility ensures direct contact between the femoral condyle and tibial insert during flexion and extension.

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