Is it hard to rebuild a radix and bridge in revision rhinoplasty?

I would reccomend waiting at least 6 months before attempting a revision. Your radix and dorsum may improve as the tip swelling improves. The tip height and angle may change as swelling resolves which may improve the balance between your tip and your dorsum. If this does not occur, a cartilage graft to both areas can readjust. Best

The surgery will require cartilage grafts from either the nasal septum, the rib or the ear.  The ear cartilage is too soft and curved to be favorable for grafts in these locations. The best choice for you would require an in person consultation, and review of the surgical details of your previous surgery. You will need to wait a full year to undergo this revision to get predictable results, and even in the most experienced hands, cartilage onlay grafts can occasionally have visible edges and require revision. For now the best thing to do is wait and see. 

The answer is you should wait a little bit longer, but once you are ready for surgery a radix graft should be very straight forward.  Most patients are counselled to wait at least 6 months, but better yet one year.  That allows the full contours to settle, and to let the skin calm down enough to tolerate a secondary procedure.The bridge can be rebuilt with cartilage, either taken from your septum, ear, or rib.  Those are still preferred to "alloplastic" material like silicone or goretex for long term safety reasons.  The decision to take cartilage from a certain site is based on ease of access, so it's usually septum ear rib in order.  Whether that cartilage is used as a singular graft, crushed, or diced and refashioned into a rolled graft is up to the surgeons preference. Same with open vs endonasal approach

Unfortunately, you will likely need to wait a year or more before undergoing a revision rhinoplasty. The width is likely to improve as the swelling subsides.

 Yes, it is possible to build up the radix with a cartilage graft with a revision rhinoplasty procedure. It is important to wait at least one year before undergoing the revision.   It is also important to make sure there is cartilage left inside the nose from the previous rhinoplasty for grafting purposes for the radix graft.

While it is probably too early for revision surgery, the solution for you is radix grafting using autogenous cartilage onlay grafts, preferably. Whatever the source, the grafts can be tailored to be narrower along the cephalic margins, which will restore the narrower dorsal contour that you desire. It is important that these grafts are tapered at the ends to blend in with the dorsal profile. Other materials, such as PTFE can be used as an alternative, but carry their own risks. Discuss all options with your surgeon. Good luck!

A direct answer to your question is it's not hard to do if you have done many secondary rhinoplasties, it is complicated. It is important that you and your surgeon are on the same page to avoid a repeat of your experience. What needs to be done and the timing really depends on what was done to you and what you look like presently. There is something in your note that I typically see in my secondary rhinoplasty patients which is a request to look like I did before in an area of the nose. I always tell patients the new starting point is what you look like now and the key question is what we can accomplish from there.

Raising the radix is commonly done during primary rhinoplasty less so in secondary. The radix is roughed up withe a rasp and any number of layers of lightly crushed septal cartilage are trimmed and placed at the radix. Surgery is a closed operation. Usually only the skin is taped without splinting. 12 months after primary surgery is optimal.