Cynthia Knee Joint System(PS)

The Cynthia knee endoprosthesis system offers the surgeon a variety of implant options depending on the soft tissue tension situation and the size of the bone defect. It is a system for many indications:osteoarthritis, rheumatoid arthritis and traumatic arthritis.
  • Product Detail


  • A sloped femoral box profile conserves bone without compromising fit or component strength.
  • Gradually reducing femoral radius provides a smooth transition throughout the gait cycle.
  • The narrow anterior flange is designed to provide an optimal fit for each patient while minimizing overhang and the opportunity for soft tissue irritation.
  • The trochlear angle varies by size to accommodate variable patient Q-angles.
  • A funnel shape allows the patient’s soft tissues to drive the position of the patella in extension and provides a smooth transition into the center of the groove.
  • Femoral lugs increase anti-rotational stability of femoral component.
  • A special cam-spine provides a large contact area and stability in flexion, while reducing the stresses to the tibia spine.
  • The patent central locking design provides the architecture for the system to optimize kinematics, while reducing backside micromotion to the lowest levels.
  • Highly polished cobalt chrome tibial tray provides smooth surface to minimize polyethylene wear.
  • The stem with 3°posterior slope, prevent impingment with cortex bone.
  • Keel design provides anti-rotational stability.


  • Painful and disabled knee joint resulting from osteoarthritis, rheumatoid arthritis, traumatic arthritis where one or more compartments are involved
  • Correction of varus, valgus, or posttraumatic deformity
  • Correction or revision of unsuccessful osteotomy, arthrodesis, or failure of previous joint replacement procedure

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Related Products

Dedicated to rehabilitation, Double Medical focus on providing high-quality, affordable products, quick logistics and constant doctors' support.

Pinnacle Acetabular Hip System
Apollo Cementless Acetabular Cup System
Twelve anti-rotation devices control rotation of the polyethylene liner. The ring mechanism in the liner eliminates the risk of liner dislocation.
Read More
Summit Tapered Hip System
Bipolar Cup System
The bipolar acetabular system is a bipolar hip implant design that features a optimal locking mechanism.
Read More
Collarless Polished Cemented Stem
PBG Proximal Bone Growth Cementless Stem
Indicated for severe painful and/or disabled joint from osteoarthritis, traumatic arthritis, rheumatoid arthritis, or congenital hip dysplasia. Grit-blasted diaphyseal region surface facilitate the bone ongrowth.
Read More
TBG Total Bone Growth Cementless Stem
With three different fully coatings: titanium, HA, and Ti+HA, TBG Cementless Hip Stem system provides long term stability and minimizes thigh pain. Proximal horizontal microstructure prevents stem subsidence; The vertical grooves provide rotational and axial stability.
Read More
Alter Cementless Hip Stem
Alter Cementless Stem
The Alter Cementless Hip with gradully taper design increases axial stability and avoids stem subsidence. The reduced lateral shoulder of Alter Cementless Stem enables the preservation of the great trochanter.
Read More
Trilliance Cemented Hip Stem
Cemented Hip Stem
Cemented Hip Stem is indicated for acute traumatic fracture of the femoral head or neck with collarless design to avoid bone absorption phenomenon caused by the stress shielding.
Read More
Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.