Is this a nose hump or a low radix? (photos)

Thank you very much for sharing your concerns with us.The harmony between facial parts makes us instinctively recognize the beauty... without knowing it, without defining it, just a perception that surprises and captivates us.In this regard, I suggest perform a Closed Rhinoplasty (without visible scars) to treat the tip, base and nasal bridge.With this procedure you get a delicate nose, better harmonize with your other facial features.Respectfully,Dr. Emmanuel Mallol Cotes.-

Hello and thank you for your question. Excellent question and it demonstrates a great knowledge of nasal anatomy.  This is actually difficult to answer without evaluating your entire face.  Based on your
photograph, you may benefit from a conservative dorsal hump reduction.  I would not recommend a radix graft.    Make sure you specifically look at before and after
pictures of real patients who have had this surgery performed by your surgeon
and not just a computer animation system. The most important
aspect is to find a surgeon you are comfortable with. I recommend that you seek
consultation with a qualified board-certified plastic surgeon who can evaluate
you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

As a matter of fact you have shades of low radix as well as small nasal hump in your nose. Body features come in shades and never purely one way or the other. 

The nose is a 3-dimensional structure, therefore full set of facial photographs are required to make a full determination.  From the one very limited photograph, it appears that there is a dorsal hump composed of both bone and cartilage.  A radix graft may or may not be required, but only after thorough examination of the nose.  For more information in many rhinoplasty before and afters, please see the link and the video below

You have an enlarged  nasal hump which would benefit from a reduction. Computer imaging would be useful for you to better understand the options available for your treatment.