联贸医疗用品技术(上海)有限公司
联贸医疗用品技术(上海)有限公司 膝关节系统
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  稳定型股骨端植入物


后十字韧带保留型
股骨端植入物


后十字韧带保留/
稳定型胫骨关节面衬垫


平置式/ 嵌入式髌骨植入物


胫骨基座


活动半月板


胫骨/股骨的前方接触面
 
 
 
 
 
 
 
 
 
 
   
  1. CoCrMo Casting
  2. Cemented design
  3. Five sizes Left and Right
  4. Matching AP/ML size ratio
  5. Extended patellar tracking groove
  6. Curve on curve design on coronal plane
  7. Multi-radius design on sagittal plane
  8. Rounded anterior cam to reduce tibial
    spine wear
  9. Rotational constraint set at ±13 degrees
    of freedom
  10. Fixed intercondye notch width for size
    interchangeability
  11. 9mm bone cut at distal and posterior
    condyles for better ROM
  12. Less bone resection at femoral box with
    safety jumping distance

     
  稳定型股骨端植入物
 
 
 
   
后十字韧带保留型股骨端植入物

        

  1. CoCrMo Casting
     
  2. Porous coated and Cemented type are
    available
     
  3. Two fixation legs for orientation and
    fixation
 
 
 
  后十字韧带保留/稳定型胫骨关节面衬垫
   
 
 
  1. UHMWPE
  2. Curve on curve design on both sagittal and coronal planes for PS design
  3. Minimum 6mm polyethylene thickness
  4. Rounded anterior spine to reduce wear for PS design
  5. 5 degrees posterior slope
  6. Anterior cut off to reduce soft tissue impingement
  7. Posterior cut off to increase ROM
  8. Full capture locking mechanism reduce back side wear
 
 
  平置式/嵌入式髌骨植入物
   
 
 
  1. UHMWPE
  2. Dome shape
  3. Both ON-SET and IN-SET designs
  4. 7 sizes available for ON-SET patella (26- 45mm)
  5. 4 sizes available for IN-SET patella (22-32mm)
  6. 8-10mm thickness for maintaining bone stock
  7. 3 pegs design for ON-SET type
 
 
  胫骨基座
   
 
 
  1. Titanium forged
  2. Cemented design
  3. 6 sizes available (AP42-55.5mm)
  4. Precise AP/ML ratio for better bone coverage
  5. Full capture locking mechanism to reduce back side wear
 
 
 
  1. CoCrMo casting tibial tray
  2. UHMWPE tibial insert
  3. Match with PS femoral component
  4. Rotating platform with central stem
  5. Highly polished surface
 
 
  胫骨/股骨的前方接触面
   
 
 
  1. Curve-on-Curve Design
    Femoral component has varus tilting or life off, it will provide less edge loading thus has less wear of polyethylene tibial insert.
     
  2. The best curvature of Curvature of Curve-on Curve Design
    It is base on compromising between laxity (freedom of motions) and conformity. The knee with a femoral frontal radius of 70mm, and a tibial frontal radius of 72mm, would satisfy the conflicting needs of both resistance to wear and natural kinematics.
 
 
 
  运转幅度
 
 
  U2 Knee limit the posterior translation distance at 3-8mm at 90 degrees of flexion.
The computer model analysis was applied to investigate the maximum range of motion at
deepest knee flexion.
A 132 to 139 degrees were achieved at U2 PS knee from sizes 1 to 5.
 
 
  胫骨/股骨的矢状切面
  single radlus   Lower flexion:larger contact area,
reduces polyethyiene wear.
  Higher flexion: longer
moment arm,
makes quadriceps more effective.
  U2 knee select Multiple Radius Design.
The patella moment arm of the Single radius design is longer than that of the Multi- Radius design's extension radius, but shorter than the Multi-Radius design’s flexion radius. It means that the Multi-Radius design makes quadriceps more effective at larger flexion angle.
 
 
  圆型的椎状接触面
 
  To reduce anterior spin wear, U2 PS Knee designed with rounded anterior tibial spine and rounded anterior femoral intercondylar eliminate anterior tibial spine polyethylene wear at rotation and hyperextension.
 
 
  膑骨曲面延伸
   
  U2 Knee system extend the patellar groove of femoral component (Exceed 90°) to provide maximum contact at knee deep flexion.
 
 
  旋转限制
    In rotational constraint consideration; as in human gait an average of 13 degrees internal and external rotations, U2 primary PS Knee system will allow ±13 degrees of rotations.
 
 
 
  跳跃距离
 
 
  U2 PS knee offers the highest jumping distance without compromising the bone cutting volume. The jumping distance of U2 Knee's design at 90° of flexion is 16.8mm.
 
 
  U2旋转系列
   
  Rotation + Translation design was reported the impingement wear at translation or rotation stopper mechanism at 5 years post operatively. Also more contact spots or sharp corners are more likely to enhance potential polyethylene wear in translation mechanisms of rotation +translation design.

The U2 MB Knee prosthesis only allows the insert to rotate in the internal-external direction against the baseplate and its insert is of a posterior stabilized design.