Archive for November 10th, 2008

Rhinoplasty Mistake #8: Nasal Valve Collapse

The nasal valve is a term used to describe the narrowest part of the nose internally. This is the area that determines if someone feels normal or obstructed breathing through the nose. When this area is overly narrowed and blocked, we call it nasal valve collapse.

There really are two types of nasal valve collapse. The collapse of the tip cartilages described above can cause external valve collapse where the blockage is just past the nostril. When most surgeons discuss valve collapse, though, they are talking about internal valve collapse. This occurs when the upper lateral cartilages in the middle of the nose have been too narrowed. Check out the attached diagram to see where these are. This problem happens when a nasal bump is taken down too much and when the cartilages themselves are shortened or not reattached during a Rhinoplasty.

Upper lateral cartilage collapse   Above left, you see normal nasal anatomy with the nasal bones in grey, the upper lateral cartilages in pink and the tip cartilages in white at the bottom of the photo. The center photo shows a common finding after a poorly done Rhinoplasty in which these structures have been aggressively reduced and separated. The resulting changes are seen on the right. The arrows indicated the collapse of the upper lateral cartilages as they fall inwards and affect breathing.  The problem seems to occur more often after a closed Rhinoplasty because most surgeons detach these cartilages without repairing and reattaching them at the end of the procedure. When the natural cartilage supports have been lost, they simply fall inwards and collapse.

The result is poor breathing and two visible cosmetic deformities. One is called an ‘inverted V deformity’. That’s because the collapsed area where these cartilages attach to the nasal bones looks like an upside-down letter V. Check out the photos below to see an ‘inverted V deformity’. The second problem is that the middle part of the bridge can start to look very pinched.

Inverted V deformity

Here we see the full view of the same nose from the front. The photo on the right shows the ‘inverted V’ deformity caused by collapse of the upper lateral cartilages. Scroll forward to the last photo to see how we fixed this Rhinoplasty mistake.

This is a common problem after Rhinoplasty and the revision Rhinoplasty experts at Profiles Beverly Hills fix it using extended spreader grafts among other techniques. Click here to see our blog on the use of spreader grafts. In the last section, we took care of this patient’s tip abnormalities. Next, we turn our attention to the upper two thirds of the nose to correct her remaining problems.

 

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