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HRSK Rotating Hinge Knee System - Optimized Design by China Suppliers and Factory for Enhanced Stability and Surgical Efficiency
Special Description
Modular Sleeves
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 Specifications
Augments with 187 Specifications are available for patients with inadequate bone stock.
Tibial Augment
Designed to address tibial bone deficiencies and ensure structural stability.
Trochlear Groove
Deepened and extended trochlear groove reduces patellar force throughout the range of motion.
Alleviates patellar subluxation and dislocation.
Hinge Mechanism
- 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 primary prostheses load distribution.
Tibiofemoral Anastomosis
- High compatibility ensures direct contact between the femoral condyle and tibial insert throughout the entire range of motion.
- Provides damping constraints at extreme positions: anterior curvature contacts the tibial surface during hyperextension, preventing impact.
Special Instrumentation
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 (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
| 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
HRSK® Rotating Hinge Knee System Surgical Technique Manual
Frequently Asked Questions
Q: What is the primary benefit of the modular sleeves in the HRSK® system?
The modular sleeves provide intra-operative flexibility, allowing surgeons to accommodate severe bone defects categorized as Engh Type II and Type III.
Q: How does the hinge mechanism reduce implant wear and loosening?
The hinge structure buffers stress transmission to significantly reduce cement-bone interface loosening. Additionally, it prevents direct contact between the metal hinge axis and the metal femoral condyle, which minimizes wear.
Q: What materials are used to construct the components?
The Femoral Condyle and Tibial Tray are constructed from Cobalt-Chromium-Molybdenum (CoCrMo) alloy, while the Tibial Bearing is made of high-quality German UHMWPE (Ultra-High-Molecular-Weight Polyethylene) to minimize postoperative wear.
Q: How does the tibiofemoral anastomosis design protect against joint hyperextension?
During prosthetic hyperextension, the anterior curvature of the HRSK contacts the tibial joint surface. This interaction slightly separates the knee joint and provides damping constraints to prevent hyperextension impact.
Q: Are there options available for patients with severe bone stock loss?
Yes, the system offers augments with 187 specifications specifically designed to assist patients with inadequate bone stock, ensuring precise anatomical reconstruction.