Procedure Guide · July 16, 2026 · 4 min · By Halima Strand
Spreader Grafts, Explained: The Small Cartilage Strips That Decide Whether You Breathe Well After Rhinoplasty
Much of the conversation around rhinoplasty focuses on profile and tip shape, but a pair of hidden cartilage struts often determines the functional result. Here is what spreader grafts do, who actually needs them, and what the evidence says.
Ask most patients what they remember from a rhinoplasty consultation and they will describe conversations about the bridge, the tip, and the profile. Surgeons, meanwhile, spend a surprising amount of that consultation thinking about a structure patients rarely see or hear about: the internal nasal valve. The most common tool for protecting it is the spreader graft, a thin strip of cartilage placed between the septum and the upper lateral cartilages. Understanding this one technique explains a great deal about why modern rhinoplasty looks the way it does.
The mechanism in plain terms. The internal nasal valve is the narrowest segment of the entire airway, the angle formed where the upper lateral cartilage meets the septum in the middle third of the nose. In most noses that angle measures roughly 10 to 15 degrees. Because airflow resistance rises sharply as a passage narrows, even a millimeter of collapse here has an outsized effect on breathing. When a surgeon removes a dorsal hump, the cartilaginous roof that once held the upper lateral cartilages in position is opened. Without support, those cartilages can drift inward over months to years, pinching the valve. Patients then describe a nose that looks fine but feels blocked, especially during exercise or deep inhalation.
What the graft actually does. A spreader graft is typically a strip of the patient's own septal cartilage, on the order of 2 to 4 millimeters wide and 20 to 30 millimeters long, sutured lengthwise between the septum and the upper lateral cartilage on one or both sides. Mechanically it does three things. It holds the valve angle open, it rebuilds the width of the middle vault so the bridge does not develop an inverted V shadow, and it can straighten a deviated dorsal septum by acting as a splint. A related option, the spreader flap or autospreader, folds the patient's own upper lateral cartilage inward to serve the same purpose, which preserves septal cartilage for other uses.
Who genuinely needs one. Not every rhinoplasty requires spreader grafts, and reflexively placing them adds width some patients do not want. The strongest indications supported in the surgical literature are: significant hump reduction that opens the middle vault, short nasal bones with long weak upper lateral cartilages, a preexisting narrow middle third, revision cases with visible inverted V deformity, and crooked noses where the dorsal septum deviates. Thick-skinned patients with strong cartilage and a modest hump reduction may do well without them. This is a judgment call made on anatomy, which is one reason a careful internal nasal exam, often with a modified Cottle maneuver where the surgeon gently supports the sidewall to test airflow improvement, matters as much as photographs.
Myth check: spreader grafts make the nose look wide and bulky. Partly outdated. Early, generously sized grafts sometimes did widen the middle vault noticeably. Contemporary technique uses thinner grafts, places them slightly below the dorsal edge, or uses spreader flaps, all of which preserve the valve without an obvious cosmetic penalty. In many crooked noses a unilateral graft actually improves symmetry. The visible width added by a properly sized graft is typically fractions of a millimeter per side.
Myth check: if you breathe fine before surgery, valve collapse cannot happen to you. False. Valve narrowing after hump reduction is a delayed, progressive process driven by scar contracture and loss of skeletal support. Long-term follow-up studies of reduction rhinoplasty performed without middle vault reconstruction report meaningful rates of late obstruction and inverted V deformity appearing one to several years after surgery. This is precisely why preventive placement during primary surgery is now standard teaching in structural rhinoplasty, rather than waiting to fix collapse in a revision, which is harder and less predictable.
Where the cartilage comes from. First choice is the patient's own septum, harvested during the same operation while preserving an L-shaped strut for support. When septal cartilage is depleted, usually in revision cases, surgeons turn to ear cartilage, which is curved and softer, or rib cartilage, which is abundant and strong but adds a small chest incision and a modest risk of warping. Each source carries tradeoffs in stiffness, availability, and donor site recovery, and this choice is worth discussing explicitly in a revision consultation.
What patients should ask. Reasonable questions include: will my hump reduction open the middle vault, do you plan spreader grafts or spreader flaps, and how will you preserve my breathing at the internal valve. A surgeon who can answer in specifics is thinking structurally. The takeaway is simple: the parts of a rhinoplasty you never see in a mirror often determine how the result functions for the next several decades, and spreader grafts are the clearest example of that principle.
Related reading: Diced Cartilage Grafts in Rhinoplasty: Versatility and Technique.