Inventor and Designer of Postural Control Insoles

STJ Congruity B/L

Knee Bend Test

Differential Diagnosis

  • Rothbarts Foot
  • PreClinical Clubfoot Deformity

Knees Extended

Both Rothbarts Foot and the PreClinical Clubfoot Deformity distorts the signals being generated from the foot to the cerebellum (brain).  

Both of these foot abnormal inherited foot structures result in postural distortions (poor posture) that frequently lead to chronic, debilitating muscle and joint pain.  

And both of these foot structures are treated using a specific type of proprioceptive intervention, termed RPT.

The type of proprioceptive insole used in treating Rothbarts Foot is very different that the proprioceptive insole used to treat the PreClinical Clubfoot Deformity.  Hence it is very important to make a differential diagnosis (determine which foot is present) before therapy is initiated.

The Knee Bend Test is used to help make this differential diagnosis.

Knees Bent

Pronated - Increased

PreClinical Clubfoot Deformity

  • When the body's weight is over the calcaneus/heel bones (e.g., when the knees are straight), abnormal pronation (foot twist) is only observed in the PreClinical Clubfoot Deformity.
  • When the body's weight is over the inner arch and front part of the foot (e.g., when the knees are bent), abnormal pronation is observed in both the PreClinical Clubfoot Deformity and Rothbarts Foot.

Pronated B/L


  • STJ - SubTalar Joint Congruity
  • B/L - BiLateral

Rothbarts Foot

Pronated B/L