The nasal bridge is the junction area of bone and cartilage located at the upper part of the nose, connecting the two nostrils. Formed by the nasal bones and the upper lateral cartilages, this structure plays an important role in preserving both aesthetic appearance and nasal function. It is one of the fundamental anatomical elements that provides balance and symmetry in the facial profile.
Deformities of the nasal bridge may be congenital or may develop as a result of trauma, surgical procedures, or age-related tissue changes. While a low or depressed nasal bridge affects aesthetic appearance, in some cases it can also impair respiratory function. Such structural differences are generally corrected with rhinoplasty or reconstructive surgery.
The height and width of the nasal bridge vary depending on ethnic background, genetic factors, and individual facial proportions. Very high or arched nasal bridges can create a prominent aesthetic profile. In contemporary surgical planning, the goal is to harmonize this region with the overall facial features.
In corrective or therapeutic procedures, cartilage grafts may be added to the nasal bridge or excess bone tissue may be rasped down. Among non-surgical solutions, shaping the bridge line with filler injections is an option. In all interventions, preserving functional integrity and achieving a natural appearance are the fundamental principles.
What Is the Structure of the Nasal Dorsum and Why Is It So Important?
Although our nasal dorsum appears as a single piece from the outside, it actually has a layered architecture composed of bones and cartilages working in perfect harmony with one another. We can liken this to the roof of a house; for a roof to be both strong and aesthetic, all its components must be in flawless relationship with each other. Understanding this structure is the first step in understanding the causes and solutions of aesthetic and functional problems.
The main components forming this structure are:
- Bony Vault
- Cartilaginous Vault
- Keystone Area
- Soft Tissue Envelope
The upper one-third of the nasal dorsum, which feels the hardest to the touch, is called the “bony vault” or “bony pyramid.” This structure is the main pillar of the nose and provides solid support for the entire nasal profile. It consists of two quadrangular nasal bones that articulate superiorly with the frontal bone. Laterally, they articulate with the extensions of the maxillary bones. Controlled bone-shaping procedures (osteotomies) performed to narrow the width of the nose or to close the gap known as the “open roof” that forms after removal of a nasal hump are carried out along these lines of articulation.
As we move toward the middle and lower parts of the nasal dorsum, we encounter the more flexible “cartilaginous vault.” This structure consists of the dorsal portion of the septal cartilage, which runs like a central pillar, and the “upper lateral cartilages,” which are attached to it on each side like wings. Although these three parts may appear separate, when viewed in cross-section they form a single, integrated “T-shaped” structure. This anatomical unity is of vital importance from a surgical perspective. For example, when you reduce the height of the septal dorsum to lower a nasal hump, you inevitably affect the position of the lateral cartilages attached to it like wings. Preserving this delicate balance or re-establishing it if disrupted forms the foundation of modern rhinoplasty.
There is a transition zone where these two vaults—the rigid bony vault and the more flexible cartilaginous vault—interlock and merge. This area is known as the “keystone region.” Just like the keystone in the center of historic stone bridges that bears the weight of the entire structure, this region is the most critical structure providing integrity and support to the nasal dorsum. In traditional nasal hump removal techniques, this region was cut and removed, leading to collapse of the middle portion of the nasal dorsum and causing both aesthetic and functional problems. The primary reason for the development of modern rhinoplasty techniques is either to meticulously reconstruct this critical region during surgery or to avoid disrupting it altogether from the outset.
What Aesthetic Problems Are Seen in the Nasal Dorsum?
The most common reasons patients consult an aesthetic surgeon are deformities seen in the nasal dorsum. These problems are not merely issues of “appearance” but also provide important clues about the underlying bone and cartilage structure. An accurate diagnosis is the foundation of proper surgical planning.
The most frequently encountered nasal dorsum problems are:
- Nasal Hump (Dorsal Hump)
- Saddle Nose (Depressed Nose)
- Crooked Nose
- Problems Resulting from Previous Surgeries
The nasal hump is the most commonly known issue and is characterized by an outward protrusion on the nasal dorsum when viewed in profile. This gives the nose a larger, harsher, and more rigid appearance. It is usually genetic but may also develop during the healing process after trauma. The hump may consist solely of bone, solely of cartilage, or most commonly, a combination of both. Making this distinction during surgical planning is crucial in determining the appropriate technique.
A saddle nose, on the other hand, is the opposite of a hump and refers to a depression or “saddle-like” indentation on the nasal dorsum. Beyond being an aesthetic problem, it is a sign of serious structural support loss. It usually results from severe nasal trauma, excessive removal of cartilage during a previous surgery, or certain medical conditions that cause cartilage resorption. This deformity not only causes collapse of the nasal dorsum but can also lead to shortening and excessive upward rotation of the nasal tip, as well as significant breathing difficulties. Treatment involves reconstructing the missing framework, that is, filling and strengthening the nasal dorsum using cartilage grafts.
A crooked nose refers to deviation of the nasal dorsum from the midline to the right or left. This asymmetry is most noticeable from the frontal view and may appear in a “C” or “S” shape. Almost always, the underlying cause is a deviation of the septum, the central partition of the nose. Just like a shift in a house’s foundation, a deviated septum pushes the cartilaginous vault to one side, causing the entire nasal dorsum to appear crooked. Therefore, correcting a crooked nose requires a comprehensive operation that addresses not only the visible deviation but also the underlying septal deformity.
Sometimes, problems arise as undesirable outcomes of previous surgeries. These are not random issues but are generally predictable consequences of outdated or insufficient techniques. The most common include:
- Inverted V Deformity: The appearance of an inverted “V”-shaped shadow at the junction where the nasal bones end and the cartilaginous vault begins, visible from the front. It usually occurs when the middle portion of the cartilaginous vault collapses inward after hump removal due to insufficient support.
- Open Roof Deformity: Failure to close the gap between the upper edges of the nasal bones after removal of a large nasal hump. This causes the nasal dorsum to appear excessively wide, flat, and depressed.
- Pollybeak Deformity: Excessive fullness in the area just above the nasal tip. This may result from inadequate removal of the cartilaginous hump or excessive scar tissue formation in that region, particularly in patients with thick skin.
Which Methods Are Used in Nasal Hump Surgery?
Correction of a nasal hump is perhaps the most well-known step in rhinoplasty. However, this seemingly simple procedure best illustrates how surgical philosophy has evolved over time. While older techniques focused solely on “removing excess,” today much more sophisticated and safer methods that preserve or meticulously reconstruct the nasal structure are preferred.
In the traditional method, known as the “En Bloc Resection” technique, the entire hump composed of bone and cartilage was removed in one piece using a chisel or saw. Although this was a fast method, it had serious disadvantages. This technique completely destroyed the keystone region, the most critical support point of the nasal dorsum, left the cartilaginous vault unsupported, and created a wide gap known as an “open roof.” Unless followed by extremely careful reconstruction, this anatomical destruction carried serious risks such as mid-dorsal collapse, breathing problems, and inverted V deformity over time. Due to this high-risk profile, it is now almost never preferred by modern surgeons.
Today, two main modern approaches stand out. The first is the “Component Dorsal Hump Reduction” method. This approach treats the nasal dorsum like a puzzle, addressing each component individually. The hump is not removed as a single unit. Instead:
First, the upper lateral cartilages are carefully separated from the septal cartilage of the central pillar.
Then, to create a new and ideal nasal profile line, the dorsal portion of the septal cartilage is lowered layer by layer with a scalpel, in a millimetric and controlled manner.
Next, the bony portion is smoothly lowered to match the new cartilage level, usually using a fine rasp or a Piezo device that works with ultrasonic sound waves.
In the final and most critical step, the separated components are reassembled and the vault is reconstructed. The upper lateral cartilages are fixed into their new position using small cartilage pieces called “spreader grafts.” These grafts prevent collapse of the middle portion of the nose, provide a natural and aesthetic width to the nasal dorsum, and most importantly, preserve the internal nasal valve angle, which is critical for breathing function, thereby ensuring functional improvement.
The second modern approach is the philosophy of “Dorsal Preservation Rhinoplasty.” This technique is a revolutionary approach that has gained popularity in recent years. Its philosophy is to preserve the nasal dorsum as a whole and lower it downward, rather than breaking, cutting, or removing it. In other words, the hump itself is not removed; instead, the entire nasal pyramid is pushed or lowered inward toward the face (Push-down/Let-down techniques) to reduce the height of the nasal dorsum. This procedure completely preserves the natural aesthetic lines of the nasal dorsum and the most critical region, the keystone area. As a result, risks such as open roof or inverted V deformity are theoretically eliminated. However, this technique is not suitable for every patient. It is particularly difficult to apply in noses with significant deviation or asymmetry and requires a high level of technical precision.
The choice depends on the patient’s nasal anatomy and the surgeon’s experience. What matters most is that the surgeon is proficient in both philosophies and can determine the most appropriate and safest approach for the patient.
How Is a Depressed or Flat Nasal Dorsum Elevated?
Repairing a collapsed nasal dorsum such as a saddle nose or elevating a structurally flat nose is essentially a reconstructive procedure. The goal is to replace the missing volume and support using tissue patches known as “grafts.” These grafts form the new framework of the nose. Selecting the correct graft material is vital for the long-term success of the surgery and a natural appearance.
The graft materials used are basically divided into three groups.
Autografts (Taken from the Patient’s Own Body): These are tissues harvested from the patient’s own body and are always considered the gold standard in nasal reconstruction. Because they are perfectly accepted by the body, the risks of infection, resorption, or extrusion are minimal. The main sources are:
- Septal Cartilage
- Ear Cartilage
- Rib Cartilage
Allografts (Processed Cadaver Cartilage): These are tissues obtained from human cadavers and processed through special medical procedures (such as radiation sterilization) to make them ready for use. The most common are rib-derived grafts known as “Irradiated Homologous Costal Cartilage” (IHCC). These grafts offer the advantage of providing a plentiful and strong cartilage source without creating a second incision in the patient’s body. Large scientific studies have shown that the rates of resorption, warping, or infection of these processed cartilages do not differ significantly from those of the patient’s own rib cartilage. This makes them a very safe and effective alternative, especially for patients who do not wish to have cartilage harvested from their own ribs or who have contraindications.
Alloplasts (Synthetic Implants): These are implants made entirely of synthetic materials such as silicone or Gore-Tex. Although they offer advantages such as unlimited availability and no need for additional incisions, because they are “foreign bodies” to the human body, they carry significantly higher long-term risks compared to biological grafts, including infection, displacement, or extrusion through the skin.
One of the most modern and refined ways of using these grafts is the “Diced Cartilage Fascia (DCF)” technique. In this method, cartilage harvested from the patient or a cadaver is diced into very small pieces (like grains of rice). These cartilage particles are then packed, like a sausage, into a thin but strong membrane called “fascia,” usually harvested from the muscle in the temporal region. The result is a smooth, moldable graft that can be shaped according to the desired nasal dorsum contour. While the diced cartilage particles provide permanent, non-resorbing volume, the fascial sleeve creates a smooth surface that conceals underlying irregularities. This technique is especially ideal for elevating the nasal dorsum in thin-skinned patients, as it completely eliminates the risk of the edges of a solid cartilage graft becoming visible and provides an extremely natural result.
How Are Wide Nasal Bones Narrowed?
One of the frequently performed procedures in rhinoplasty is “osteotomy.” This involves controlled cutting and repositioning of the nasal bones to narrow a wide nasal base, close an “open roof” deformity formed after hump removal, or correct crooked nasal bones. This procedure is performed along the line where the nasal bones meet the cheek. The bone walls, which are carefully mobilized, are brought toward the midline to close the roof, giving the nasal dorsum a more delicate, narrow, and aesthetically pleasing triangular appearance.
The instruments used to perform this delicate procedure have also evolved over time. The main instruments include:
- Traditional Instruments: For many years, osteotomies were performed by gently tapping small, sharp instruments called osteotomes or chisels with a hammer. Although effective in experienced hands, this method can cause more unintended trauma to surrounding soft tissues, leading to increased bruising and swelling after surgery.
- Piezo Surgery (Ultrasonic Bone Shaping): One of the most important technological innovations of recent years is performing bone cutting with ultrasonic sound waves. The Piezo device has a tip that produces high-frequency vibrations. This tip precisely cuts only hard tissue (bone) while causing absolutely no damage to surrounding soft tissues such as blood vessels, nerves, mucosa, or cartilage. The greatest advantage of this technology is that it provides much more precise and controlled bone cutting, minimizes surrounding tissue trauma, and therefore significantly reduces bleeding, bruising, and swelling. This makes the postoperative recovery process more comfortable and faster for the patient.
Why Is It More Difficult to Correct the Nasal Dorsum with Revision Surgery?
Revision rhinoplasty, meaning correction of a nose that has undergone one or more previous surgeries, is a much more complex and challenging process compared to primary surgery. In this situation, the surgeon is not dealing with a natural, untouched anatomy, but rather with a structure that has been completely altered during healing, covered with scar tissue, weakened, and often deficient.
The main reasons that make revision surgery more difficult are:
- Dense Scar Tissue: The firm and adherent scar tissue (fibrosis or scar) formed during the body’s natural healing process after the first surgery completely eliminates normal anatomical planes. This makes it very difficult to separate the skin from the underlying framework, increases bleeding risk, and raises the risk of skin perforation.
- Distorted Anatomy and Loss of Landmarks: Natural structures and anatomical landmarks that guide the surgeon have been lost. The framework is often weakened, distorted, or partially missing. The surgeon is essentially navigating terrain without a map.
- Depleted Graft Sources: The most ideal and easily accessible graft source, septal cartilage, is often used or damaged during the first surgery. This forces the surgeon to seek additional graft sources such as the ear or rib, increasing the complexity of the procedure.
For these reasons, revision surgery is often not a simple reshaping but a complete reconstruction of the nasal structure from the ground up. Managing irregularities, depressions, or asymmetries on the nasal dorsum usually requires a two-stage approach. First, a strong, straight, and solid main framework (vault) is constructed, often using rib cartilage. However, no matter how smooth this framework is made, small imperfections may still be visible due to the thin skin and scar tissue covering it. This is where the second stage, camouflage, comes into play. Materials such as a thin fascial layer, crushed cartilage, or dermal matrix are laid over the reconstructed framework like a “cover,” concealing all remaining irregularities and providing an extremely smooth and natural external contour.
Can the Nasal Dorsum Be Corrected with Non-Surgical Fillers?
In recent years, non-surgical rhinoplasty performed with injectable dermal fillers, also known as “liquid rhinoplasty,” has become quite popular. This method can be an excellent option for certain cases, but it is important to remember that it does not replace surgery and has clear limitations.
As the name suggests, this method is entirely based on adding volume for camouflage. It can never make the nose smaller, thinner, or narrower. The main situations in which it is effective include:
- Camouflaging a small to moderate nasal hump.
- Elevating a flat or low nasal root (radix).
- Filling small depressions or asymmetries on the nasal dorsum.
- Touching up very minor irregularities after surgery.
Hyaluronic acid-based fillers are generally used in this procedure, and their effects are temporary (lasting approximately 6 to 18 months). This temporary nature is both an advantage (reversible if the result is not liked) and a disadvantage (it must be repeated regularly to maintain the effect).
However, this seemingly simple procedure carries very serious risks. The nose has a very rich and complex vascular network connected to the face and eyes. Accidental injection of filler into an artery can block blood flow, leading to tissue necrosis of the nose or facial skin, or most alarmingly, can travel backward into the main artery supplying the eye, causing permanent blindness. For this reason, it is vitally important that this procedure be performed only by experienced specialist physicians who have surgical-level mastery of nasal anatomy, layers, and vascular structures. In surgical practice, fillers can also be used as a tool that allows a patient who is hesitant about surgery to “test drive” a new profile.
Op. Dr. Yunus Kaplan is a ENT surgeon with over 15 years of experience specializing in facial aesthetics and rhinoplasty in Istanbul, Turkey. A graduate of Gaziantep University Faculty of Medicine, he completed his ENT specialization at the same institution in 2009 and has since practiced in several prominent private hospitals before founding his own clinic in 2016. Dr. Kaplan focuses on primary, revision, ethnic, and piezo rhinoplasty procedures, combining precision and natural results. He is an active member of the European Academy of Facial Plastic Surgery (EAFPS), the Turkish Facial Plastic Surgery Society, and the Head and Neck Surgery Society, maintaining high standards of medical ethics, artistry, and patient trust.
