OdrA is a knee orthosis that applies a distraction / rotation effect. As a result, the OdrA relieves the pain due to medial knee compartment osteoarthritis.




  • The combined action of 2 joints lowers the pressure in the medial knee compartment :
- Medial joint : increases the distance between upper and lower bands when the leg is extended and leads to a distraction effect between the femur and the tibia.
- Lateral joint : shifts back the articular center and causes an outward rotation of the foot. This leads to a decrease of the second peak of the adduction moment during gait.


 Several views of the OdrA orthosis
 Medial joint : distraction
 Lateral joint : rotation
  • Dynamic orthosis : it only works when knee is fully extended and weight bearing.
  • 2 joints : ensures a good knee support for a better stability
  • Custom-built with casting done by an orthotist.
  • Very light and compact-sized : less than 500g on average.


The OdrA orthosis must be prescribed by a specialized physician (orthopedic surgeon, PM & R physician, rheumatologist). It is deigned for the symptomatic treatment of the medial compartment arthritis of the knee.

The OdrA orthosis is particularly recommended for patients :

suffering from medial knee compartment osteoarthritis, for a pain which is higher than 40 using the Visual Analogue Scale.
waiting for knee surgery or who cannot undergo surgery.
looking for an alternative to drug therapies such as NSAIDs (non steroidal anti-inflammatory drugs). 
looking for more stability.




X Patient suffering from superficial venous problems

X Patient whose lateral knee compartment is more affected than the treated medial compartment

X Patient with pronounced knee hyperextension


The OdrA orthosis is not a corrective orthosis.

The OdrA orthosis should not be used in water.

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