It is true there is much controversy concerning the effectiveness of wedged insoles for knee arthritis.  There are credible publications for and against the benefit.

However, all disease conditions require indications in order to have effective treatment.  For instance, antibiotics are not a benefit for a virus.

The truth is that no publication or study until now has considered whether you or patient is a candidate or would benefit.

The truth is that wedged insoles are intended to divert the forces from the arthritic side of the knee to the healthy side of the knee.

The truth is that there must be mobility of the knee ligaments and those in the foot and ankle (subtalar joint) for wedged insoles to work.  Something has to give.

The truth is that most compartmental arthritis of the knee is medial, occasionally lateral.

The truth is that the slope of the wedged insole should cause the foot and ankle to turn one way or the other, depending upon how the slope is placed.  If the wedge is higher on the outside then the foot and angle rotates outward during walking.

The lateral wedge moves the compliant foot and ankle outward, resulting in a knock knee force at the knee.  If the knee is compliant, the forces are shifted away from the inner side to the outer side.

The truth is that if the patient’s foot and ankle are stiff, there will be no outward motion and no transfer of forces.  Therefore, there is no resultant shift of forces upward toward the knee joint.

The truth is that there is no benefit if there is no foot, ankle and knee joint compliance.

The truth is that there is a simple test to determine if you or a patient has enough looseness of the knee ligaments and the foot and ankle to have insoles be a benefit.

The truth is that if you or a patient passes this test the wedged insoles will be effective and transfer forces to the healthier side of the knee joint.  See the evidence:

The truth is that wedge insoles are effective when the indications are there.