This post is intended for those of you (me included) who are perplexed with the alignment of the knees w.r.t. your feet.
This usually indicates a weakness in the internal hip rotators (those hip muscles that internally rotate your legs) and a tightness in the external hip rotators (hip muscles that externally rotate the legs). The following article is written by a license physical therapist, and is quite detailed, but if you can stay with her, you may get an insight in correcting this imbalance, creating safety around the knee and potentially staving off problems with your lower back and sacroiliac joints. Just something else to think about!