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Hi, I am doing a biomechanical portfolio for my assignment and I realise that the STJ neutral position for my participant is such that the left leg is having a rearfoot valgus while the right is having a rearfoot varus. I am not too sure about this findings and wonder if it is possible for both rearfoot varus and valgus to be present at the same time. Since rearfoot valgus/varus are both congenital deformity, shouldn't it be symmetrical in both foot?
Also for the left foot, the RCSP and NSCP findings correlate with the rearfoot valgus, thus i am really confuse about this.

Thank a lots for answering my question.

Claudia

 

Do the feet look markedly different? When the measurements don't make sense, step back and look at the feet to see if there could have been an error in the measurement. One of the problems with doing those measurements is the error in placing the heel bisection. When I was teaching at the California College of Podiatric Medicine the faculty of the biomechanics department all bisected the same heel and there was a 5 degree range in the placement of the bisection. Also, not all feet are symmetrical.

One pathway forward is to get better at bisecting heels. Another pathway forward is to abandon heel bisections altogether and find a better paradigm. Well, maybe you should not abandon heel bisections completely. They are a good way to illustrate a partially compensated varus (forefoot and rearfoot). Once you understand that concept you can abandon heel bisections. If you want to know more, search for threads on tissue stress approach here on podiatry arena.