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HRSK Rotating Hinge Knee System

Revision Knee

Product Details

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HRSK Rotating Hinge Knee System

●Optimized Load Distribution

Primary Prosthesis-Inspired Design:
The tibia bears 95% of the load, ensuring stability and natural load transfer.

● Patellar Tracking

Consistent with Primary Prosthesis:
Maintains familiar biomechanics for seamless adaptation.

● Modular Design for Bone Defects

Compatible with JUST Knee System Augments:
Effectively addresses severe bone defects with versatile reconstruction options.

● Surgical Efficiency

Same Basic Procedure as JUST Knee System:
Minimizes bone loss and allows the use of general instruments for a streamlined workflow.

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    Special Description

    hrsk-1-3

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

    Highly polished upper surface reduces
    postoperative wear

    HRSK-2-1

    Augments with 187 Specifications

    Are available for patients with
    inadequate bone stock

    HRSK-3-1

    Tibial Augment

    grsk11

    Deepened and extended trochlear groove

    Reduces patellar force throughout the range of motion

    Alleviates patellar subluxation and dislocation

    HRSK-5-1

    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.

    HRSK-6-1

    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.

    Special Instrumentation

    hrsk (3)
    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 (1)
    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 (2)
    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

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    HRSK® Rotating Hinge Knee System
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