Where is the knee pain coming from ?

Common sources of outer knee pain in backbends include tension in tensor fascia latae (TFL) and the iliotibial band (IT band) as well as letting knees go wide, but pointing feet in. Alignment in backends is an important factor. When the feet are corrected by themselves this can cause the knee to hurt during backbends.

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Thanks for this video. But so, if its better anatomically to have the feet a bit to external rotation, can we stay like this? Or is it better to work on the problem above in order to be able with time to have the feet parallele?