Hello,
For such lumps below the knees, erythema nodosum needs to be ruled out. Erythema nodosum is a type of skin inflammation that is located in a certain portion of the fatty layer of skin. It results in reddish, painful, tender lumps most commonly located in the front of the legs below the knees.
Diagnosis is by physical examination and biopsy of the lesion. Other lab investigations like complete blood count, ESR, ASO titer, urinalysis, throat culture, intradermal tuberculin test, and chest x-ray may also be done.
I would recommend a physician/dermatologist’s evaluation. Treatment depends on the confirmation of diagnosis. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
I am an athletic trainer and I deal with orthopedic stuff every day. Unless these bumps are painful, I wouldn't worry about it! Don't fix what isn't broken. Especially since the bumps are bilateral (meaning on both legs) I am sure you are right...just the way God made her! I have seen kids with more pronounced fibular heads and I have seen MANY kids that are "knock-kneed". As long as she is pain free, I really truly wouldn't worry. Occasionally the knock-kneedness can cause back and hip pain in the future, so that may be something you ask the ortho about. Sometimes certian orthotics (shoe inserts) can help with this and a lot of ortho's make them in their office. Good luck!! Let us know how it goes!