The transverse cervical artery is a blood vessel in the neck that crosses the posterior triangle, a region bordered by the sternocleidomastoid muscle in front, the trapezius behind, and the clavicle below. It feeds the trapezius and surrounding shoulder muscles and skin, and its significance in clinical medicine has grown considerably in recent decades because surgeons rely on it as a blood supply for tissue flaps used to reconstruct the head and neck after cancer surgery. The artery’s branching pattern is famously inconsistent from person to person, which makes it both a fascinating topic in anatomy and a practical challenge in the operating room.
Where the Artery Runs
The transverse cervical artery typically arises from the thyrocervical trunk, a short vessel that branches off the subclavian artery near the base of the neck. From there it travels laterally across the posterior cervical triangle, passing over the scalene muscles and the brachial plexus (the nerve network that supplies the arm). It eventually reaches the deep surface of the trapezius muscle, where it divides into a superficial branch and a deep branch. The superficial branch feeds the upper and middle parts of the trapezius and sends small perforating vessels through the muscle to nourish the overlying skin. The deep branch dives beneath the levator scapulae and the rhomboid muscles, running along the medial border of the scapula.
A morphometric study that examined the artery’s course found the transverse cervical artery present on both sides in every subject and noted that its path across the posterior triangle was remarkably consistent from person to person, even when its origin point varied.
Branching Variations and Why They Matter
If there is one thing anatomists agree on about this artery, it is that the details of where it starts and how it branches are anything but predictable. A large dissection study covering 498 neck halves found that the superficial cervical artery, the dorsal scapular artery, and the suprascapular artery could emerge from the subclavian artery in several different configurations. About 30% of the time, a single trunk gave rise to both the superficial cervical artery and the dorsal scapular artery. In roughly a quarter of cases, all three arteries shared one trunk. A trunk carrying just the superficial cervical and suprascapular arteries appeared in about 22% of cases, and a trunk carrying the dorsal scapular and suprascapular arteries showed up in only around 4%.1PubMed. Arteries in the posterior cervical triangle in man
The dorsal scapular artery is the branch that creates the most confusion. It often arises as the deep branch of the transverse cervical artery, but in many people it comes directly off the subclavian artery instead. A study of 79 specimens found the dorsal scapular artery originating from the transverse cervical artery about 48% of the time. In the remaining cases it branched independently from the second or third part of the subclavian artery, and in a small fraction it came from the axillary artery.2Scientific Reports. Origin variations and brachial plexus relationship of the dorsal scapular artery When the dorsal scapular artery arises on its own, the transverse cervical artery effectively has no deep branch and is sometimes called the superficial cervical artery instead. This naming inconsistency has frustrated anatomists and surgeons for decades, and textbooks still disagree on the terminology.
For the person reading an anatomy textbook, these variations might seem like academic trivia. In practice, a surgeon raising a tissue flap that depends on one of these branches needs to know exactly which configuration is present before clamping anything. Preoperative imaging has become standard for that reason.
What the Artery Supplies
The main territory of the transverse cervical artery is the trapezius muscle and the skin over the upper and posterior shoulder. Its superficial branch courses along the deep surface of the trapezius, sending perforating vessels upward through the muscle belly to reach the skin.3JPRAS Open. Co-dominance of the transverse cervical artery and dorsal scapular artery in the blood supply of the trapezius muscle: Anatomical study and clinical validation Those cutaneous perforators are small but reliable, and they are the foundation for several pedicled skin flaps used in reconstructive surgery.
When the deep branch is present (the roughly half of people in whom the dorsal scapular artery arises from the transverse cervical artery), it supplies the levator scapulae, the rhomboid muscles, and part of the posterior neck and upper back. This deep branch provides an independent blood supply that can sustain large areas of muscle and skin, which is why it supports the lower trapezius flap used to cover posterior neck and scalp wounds.
The Artery’s Role in Reconstructive Surgery
Head and neck cancer surgery often leaves large tissue defects that need coverage with well-vascularized tissue. The transverse cervical artery and its branches serve as the blood supply for several flap options, each suited to different defect locations.
Supraclavicular Flaps
The supraclavicular artery island flap is a workhorse for moderate-sized defects in the head and neck. This flap is nourished by the supraclavicular artery, which in many people is a direct branch of the transverse cervical artery. It can be raised as a pedicled flap (meaning it stays attached to its blood supply and is rotated into the defect) rather than requiring microsurgical reconnection of tiny vessels. A series of 24 patients who received an extended version of this flap, based specifically on the cutaneous feeders and perforators of the transverse cervical artery, reported a complete flap survival rate of about 96%.4PubMed. Extended supraclavicular fasciocutaneous island flap based on the transverse cervical artery for head and neck reconstruction after cancer ablation
A larger case series of 45 patients used the supraclavicular artery island flap to reconstruct defects of the oral cavity, throat, esophagus, temporal bone, and cervical skin after cancer surgery.5JAMA Otolaryngology–Head & Neck Surgery. The Supraclavicular Artery Island Flap in Head and Neck Reconstruction: Applications and Limitations The flap’s versatility and the fact that it avoids the need for microsurgery make it attractive, particularly when operating time needs to be shorter or when patients are not good candidates for free tissue transfer.
Lower Trapezius Flap
For wounds farther back on the head, including the posterior neck and occipital region, the lower trapezius musculocutaneous flap is a well-established option. It relies on the deep branch of the transverse cervical artery. A review of 13 patients with complex open wounds in these areas found this flap provided reliable coverage, with the ability to reach as far up as the top of the skull.6PubMed. The lower trapezius musculocutaneous flap revisited: versatile coverage for complicated wounds to the posterior cervical and occipital regions based on the deep branch of the transverse cervical artery Because the deep branch delivers a rich blood supply through the muscle itself, these flaps are particularly useful in contaminated or irradiated wounds where healing is compromised.
The Artery as a Recipient Vessel for Free Flaps
When surgeons perform a free tissue transfer, they remove tissue from a distant part of the body and reconnect its artery and vein to vessels near the defect under a microscope. After previous neck surgery or radiation, the go-to recipient vessels in the neck (branches of the external carotid or the facial artery) may be scarred, clotted, or simply absent. In these “vessel-depleted” necks, the transverse cervical artery becomes a candidate to receive the incoming flap’s artery. Its consistent course across the posterior triangle and its adequate diameter make it a reliable backup.7PubMed. A morphometric analysis of the suitability of the transverse cervical artery as a recipient artery in head and neck free flap microvascular reconstruction
Dual-phase CT angiography can map out which arteries and veins remain usable before the surgeon makes the first incision, helping the team plan which vessel to connect to and where to look for it.8PubMed. Dual-phase CT angiography for presurgical planning in patients with vessel-depleted neck This kind of preoperative imaging has reduced the risk of discovering mid-surgery that the planned recipient vessel is unusable.
Complications Involving the Transverse Cervical Artery
Because the artery lies in a region that surgeons frequently work through during neck dissections, thyroid operations, and lymph node biopsies, it can be injured during or after these procedures. One uncommon but serious complication is pseudoaneurysm formation, where the arterial wall is partially torn and blood pools in a false sac next to the vessel. A reported case involved a pseudoaneurysm of the transverse cervical artery that developed three weeks after a radical neck dissection, causing recurrent significant bleeding. The pseudoaneurysm was identified on angiography and treated with endovascular coil embolization, a minimally invasive technique in which tiny metal coils are packed into the sac to block blood flow.9PubMed Central. Transverse Cervical Artery Pseudoaneurysm: An Unusual Delayed Complication of Radical Neck Dissection
Surgery is not the only cause. A separate case report documented a pseudoaneurysm that formed after placement of a hemodialysis catheter in the internal jugular vein, likely from the needle puncturing the transverse cervical artery during access. That pseudoaneurysm also appeared roughly three weeks later and was diagnosed with color Doppler ultrasound before being treated by the same coil embolization method.10PubMed. Haemodialysis catheter-related right transverse cervical artery pseudoaneurysm and treatment by coil embolization The three-week timeline in both cases is not coincidental; it reflects the typical window for a contained arterial leak to enlarge enough to cause symptoms.
The Artery and Regional Anesthesia
Anesthesiologists performing a supraclavicular brachial plexus block, a common technique to numb the arm for surgery, place a needle near the nerve cluster just above the clavicle. The transverse cervical artery often runs through or very close to this target zone, creating a risk of accidental puncture. A study using ultrasound to scan the supraclavicular region found the transverse cervical artery visible in about 89% of scans. Its detection rate varied dramatically depending on where the ultrasound probe was positioned: it appeared in fewer than 2% of scans at one standard probe location but in nearly 58% at another.11PubMed. The presence of transverse cervical and dorsal scapular arteries at three ultrasound probe positions commonly used in supraclavicular brachial plexus blockade
The practical takeaway for anesthesiologists is that the artery is not always in the same spot relative to the standard ultrasound view, and choosing a probe position that minimizes the chance of encountering it can reduce the risk of arterial puncture. Ultrasound-guided techniques have made this much safer than the older landmark-based approach, because the clinician can see the artery pulsating on the screen and steer the needle around it.
Relationship to the Dorsal Scapular Nerve
The dorsal scapular nerve, which innervates the rhomboid muscles and helps stabilize the scapula, runs close to the dorsal scapular artery in the posterior neck. When the dorsal scapular artery arises from the transverse cervical artery, these structures travel together for part of their course. A study examining this relationship found the nerve consistently ran medial to the artery, with an average separation of about 7 to 11 millimeters depending on the level examined.12The Korean Journal of Pain. New insights into pathways of the dorsal scapular nerve and artery for selective dorsal scapular nerve blockade
This matters clinically because dorsal scapular nerve entrapment can cause a nagging pain along the medial border of the scapula, and a nerve block targeting the dorsal scapular nerve requires the clinician to find the artery on ultrasound first, then place the injection about a centimeter medial to it. Using the artery as a landmark rather than trying to visualize the nerve directly (which is small and often hard to see on ultrasound) has improved the precision of these blocks.
How Surgeons Identify the Artery Before and During Operations
Given how often its branching pattern deviates from the textbook, surgeons rarely rely on memorized anatomy alone when working with the transverse cervical artery. CT angiography, particularly dual-phase protocols that image both arteries and veins, has become a standard planning tool before complex neck reconstructions.13PubMed. Dual-phase CT angiography for presurgical planning in patients with vessel-depleted neck These scans produce a three-dimensional map of the neck vasculature that the surgical team reviews before the procedure, deciding in advance which vessels are large enough and healthy enough to use.
Intraoperatively, handheld Doppler probes can locate the artery through intact tissue, and ultrasound is used in real time during procedures like nerve blocks. For supraclavicular flap harvest, the surgeon typically identifies the supraclavicular artery with a Doppler in the supraclavicular fossa and dissects toward it, tracing the vessel back to its origin from the transverse cervical artery to ensure the pedicle is long enough. In the case of the lower trapezius flap, the deep branch is found by dissecting along the undersurface of the trapezius from its lateral edge and following the vessel medially toward the spine.
Naming Confusion in Textbooks and Literature
Part of the reason the transverse cervical artery is confusing to learn is that anatomists have never fully settled on what to call its parts. When the superficial and deep branches arise from a common trunk, many texts call the whole thing the transverse cervical artery, with its branches labeled “superficial” and “deep.” But when the deep branch arises independently from the subclavian artery, it gets its own name: the dorsal scapular artery. And in that case, what was the “superficial branch” is now just called the superficial cervical artery, or sometimes the transverse cervical artery itself.
This creates a situation where the same vessel might be called “transverse cervical artery” in one patient and “superficial cervical artery” in another, depending on whether the dorsal scapular artery happens to branch from it or not. Older anatomical texts tended to describe a single transverse cervical artery that always divided into superficial and deep branches. Modern dissection studies, like the one that examined 498 neck halves, have shown that the “classic” pattern is only one of several common arrangements.14PubMed. Arteries in the posterior cervical triangle in man Awareness of this variability has gradually improved, but surgical reports still sometimes use conflicting terminology, which can make it harder to compare results across studies.
For a student or clinician encountering this artery for the first time, the clearest approach is to think of the posterior triangle’s blood supply as a system of vessels that can combine in multiple configurations rather than a single fixed artery with predictable branches. Identifying vessels by their destination (which muscle or skin territory they feed) is more reliable than trying to match them to a single named trunk.