Transforaminal Injections
Transforaminal Epidural Steroid Injections for Targeted Nerve Root Pain Relief in New Jersey.
A transforaminal injection is one of the most precisely targeted non-surgical treatments available for nerve root pain in the spine. To understand what makes it distinct from a standard epidural steroid injection, it helps to understand the anatomy it is designed to address.
On each side of the spine, at every vertebral level, there is a small opening called the foramen through which a nerve root exits the spinal canal and travels toward the arm or leg. These openings are the precise location where nerve roots are most commonly compressed — by a herniated disc pushing against the nerve as it exits, by bone spurs narrowing the foraminal channel, or by thickened tissue reducing the available space. When a nerve root is compressed at this exit point, it produces the familiar pattern of radiating pain that patients describe as sciatica, arm pain, or radiculopathy.
A transforaminal injection places anti-inflammatory steroid medication directly at the opening of this foramen, surrounding the compressed nerve root with medication at the exact point of irritation. Unlike an interlaminar epidural steroid injection, which delivers medication into the general epidural space and relies on the medication flowing to reach the affected nerve, a transforaminal injection targets the specific nerve root identified as the pain generator on the patient’s MRI. The precision of delivery is significantly higher, and for patients with clearly localized single-sided nerve root pain, this targeting often produces a more reliable and more complete response.
Rishi N. Sheth, MD performs all transforaminal injections at Spine Care New Jersey under continuous fluoroscopic imaging guidance. The position of the needle is confirmed with contrast dye before any medication is delivered, ensuring the steroid reaches the intended target with precision. His background as a fellowship-trained spine neurosurgeon means that every transforaminal injection is performed with a complete understanding of the spinal anatomy involved and the specific nerve root being treated.
Why Transforaminal Injections Are More Targeted Than Standard Epidural Steroid Injections.
Patients who have already received a standard epidural steroid injection, or who have been offered one by another provider, sometimes ask why Rishi N. Sheth, MD is recommending a transforaminal injection instead. The answer comes down to targeting and anatomy.
A standard interlaminar epidural steroid injection accesses the epidural space from the back of the spine between two laminae, and the medication distributes broadly through the epidural space, reaching nerve roots at and near the injection level on both sides. This broad distribution is appropriate when pain is bilateral, when the specific level of pathology is not clearly localized, or when multiple adjacent levels need to be covered with a single injection.
A transforaminal injection approaches from the side, entering the foramen directly to place medication immediately around the specific nerve root identified as the pain generator. For a patient whose MRI shows a disc herniation at L4-L5 on the right side compressing the right L5 nerve root, and whose symptoms exactly match the L5 nerve distribution with right-sided leg pain traveling to the foot, a right-sided L4-L5 transforaminal injection delivers the steroid precisely where it is most needed. A standard epidural injection at the same level would deliver medication less specifically and may produce less complete relief.
The transforaminal approach is also the technique of choice for far-lateral disc herniations and foraminal stenosis where the nerve root is compressed within or just outside the foramen itself, in a location that a standard epidural injection does not reliably reach.
Rishi N. Sheth, MD selects between interlaminar epidural and transforaminal approaches based on each patient's imaging findings, symptom pattern, and the specific nerve root anatomy involved. The goal is always to deliver the medication where it will do the most good for that specific patient.
The Spine Conditions That Respond Best to Transforaminal Injection Therapy.
Transforaminal injections are specifically designed for pain driven by nerve root compression and inflammation at a clearly localized spinal level. They are most effective in the following clinical situations.
Lumbar disc herniation
Lumbar disc herniation with sciatica is the most common indication for a lumbar transforaminal injection. When a herniated disc at a specific level is compressing a nerve root and producing radiating leg pain, numbness, and tingling, delivering steroid medication directly around that compressed nerve root at the level of the herniation provides the most direct anti-inflammatory effect possible without surgery. For many patients with an acute or subacute lumbar disc herniation, a well-timed transforaminal injection provides enough relief to allow full participation in physical therapy while the disc heals naturally.
Foraminal stenosis
Foraminal stenosis causing radiculopathy is another strong indication. When the narrowing of the neural foramen from bone spurs or disc height loss is compressing a specific nerve root, a transforaminal injection delivers medication directly into the narrowed space around the affected nerve, reducing inflammation and nerve irritation even when the structural narrowing itself cannot be changed without surgery.
Cervical disc herniation
Cervical disc herniation or foraminal stenosis causing arm pain, numbness, or weakness responds to cervical transforaminal injections when the pathology is at a clearly identified level and the symptoms match the expected distribution of the compressed nerve root. Cervical transforaminal injections require particular anatomical care given the proximity of the vertebral arteries, and they are best performed by a physician with specific training and experience in the cervical spine.
Failed back surgery syndrome
Failed back surgery syndrome with persistent radiculopathy is a situation where transforaminal injections play an important role. When a patient continues to experience nerve root pain after spine surgery, transforaminal injection around the specific nerve root involved can address the inflammatory component of the residual symptoms and help determine whether the pain generator is nerve root inflammation versus scar tissue or a structural problem requiring further intervention.
Before, During, and After Your Transforaminal Injection.
Before the Procedure
Every transforaminal injection at Spine Care New Jersey is preceded by a thorough evaluation during which Rishi N. Sheth, MD reviews your imaging, confirms the diagnosis, identifies the specific nerve root to be targeted, and selects the optimal approach and level for the injection based on your symptoms and anatomy. Patients taking blood thinning medications are asked to discuss whether these need to be temporarily held before the procedure. Fasting is generally not required. Patients are advised to arrange for someone to drive them home afterward.
During the Procedure
The procedure is performed with the patient positioned on the fluoroscopy table in the position that provides the best imaging access to the foramen being targeted. For lumbar transforaminal injections, patients lie face down. For cervical transforaminal injections, patients lie face down or on their side depending on the specific level and approach. The skin over the injection site is thoroughly cleaned and local anesthetic is applied to the superficial tissues before the procedure needle is advanced.
Under continuous fluoroscopic guidance, Dr. Sheth carefully advances the needle toward the target foramen, confirming its position at each step before advancing further. Once the needle tip is positioned correctly at the opening of the foramen, a small amount of contrast dye is injected to verify that the needle is accurately placed and that the medication will flow around the target nerve root before the steroid is delivered. Patients may feel pressure during the injection, and some patients experience a brief reproduction of their typical radicular pain as the contrast or medication contacts the nerve root, which is a normal response and confirms accurate targeting.
The procedure typically takes 15 to 30 minutes from start to finish. Patients rest briefly in the recovery area and go home once they are comfortable.
After the Procedure
It is normal to notice a temporary increase in pain or heaviness in the injected extremity in the first 24 hours, reflecting both the volume of fluid added to the foraminal space and the mechanical effect of the injection itself before the steroid takes effect. This early response resolves within a day or two for most patients. The therapeutic benefit of the steroid typically begins to develop between three and seven days after the injection, with the maximum anti-inflammatory effect reached at approximately two weeks.
Patients are advised to avoid heavy lifting and strenuous activity on the day of the procedure. Normal daily activities including light walking typically resume the following day. Physical therapy, if prescribed alongside the injection, continues through the post-injection period and benefits directly from the pain relief the injection provides.
Transforaminal Injections Performed by the Same Neurosurgeon Who Evaluates and Treats Your Spine.
One of the most important distinctions at Spine Care New Jersey is that the physician who evaluates your spine condition, interprets your MRI, and develops your treatment plan is the same physician who performs your injection. This continuity matters clinically in ways that patients often do not realize until they have experienced its absence.
When a transforaminal injection is performed by a physician who did not evaluate the patient and has not reviewed the imaging, the injection is performed based on the referral information alone. The nuances of the patient's specific anatomy, the precise level and side of the pathology, and the relationship between the imaging findings and the clinical presentation are not available to the injecting physician in real time. The result is an injection that is performed at the right general level but may miss the specific anatomical details that determine whether the procedure is truly optimal for that patient.
At Spine Care New Jersey, Rishi N. Sheth, MD performs transforaminal injections for his own patients, in the clinical context of having personally evaluated their case and reviewed their imaging. He knows precisely which nerve root is the target, why it was selected, and what the expected response should be. If the response is not as expected, he can adjust the plan at the follow-up appointment with the full clinical picture in mind.
His fellowship training in spine surgery and neurosurgical oncology at the University of Miami and Memorial Sloan Kettering Cancer Center provided him with a depth of spinal anatomy knowledge that directly informs the precision and safety of the transforaminal injections he performs. For cervical transforaminal injections in particular, where the proximity of the vertebral arteries requires particular care, the level of anatomical training behind the injection technique matters significantly.
Common Questions About Transforaminal Injections at Spine Care New Jersey.
A transforaminal epidural steroid injection delivers anti-inflammatory steroid medication directly into the foramen, the opening through which a specific nerve root exits the spine. Unlike a standard interlaminar epidural injection which distributes medication broadly through the epidural space, a transforaminal injection targets the exact nerve root identified as the pain generator on MRI. This precise targeting makes it the preferred approach for patients with clearly localized single-sided radicular pain from a herniated disc or foraminal stenosis at a specific spinal level.
When a lumbar herniated disc compresses a nerve root, the nerve and surrounding tissue become inflamed, amplifying the pain signal traveling down the leg as sciatica. A transforaminal injection places steroid medication directly around the compressed nerve root at the exact level of the herniation, reducing the inflammation at its source. This targeted anti-inflammatory effect reduces the nerve pain signal significantly, often providing meaningful sciatica relief within three to seven days. For many patients with acute disc herniation, a well-timed transforaminal injection provides enough relief to avoid surgery while the disc heals naturally.
The duration of relief from a transforaminal injection varies between patients. Most experience meaningful relief beginning three to seven days after the procedure, with maximum effect at approximately two weeks. Relief typically lasts anywhere from several weeks to several months. Some patients experience relief lasting six months or longer, particularly those who actively participate in physical therapy during the relief period to address the mechanical factors contributing to their nerve compression. If relief is meaningful but temporary, the injection can be repeated, with most physicians recommending no more than three injections in a twelve-month period.
Transforaminal injections are generally safe procedures when performed by an experienced physician under fluoroscopic imaging guidance. Common minor side effects include temporary soreness at the injection site and a brief flare of the radicular symptoms in the first 24 to 48 hours. More significant but uncommon risks include infection, bleeding, nerve irritation, and in rare cases, intravascular injection if the needle contacts a small blood vessel. For cervical transforaminal injections, proximity to the vertebral arteries requires particular care. The use of contrast dye before steroid delivery and continuous fluoroscopic monitoring significantly reduces the risk of complications.
In the first 24 hours after a transforaminal injection, avoid heavy lifting, strenuous exercise, and prolonged standing or sitting. Light walking is encouraged and beneficial. Apply ice to the injection site if it is sore. Take any prescribed medications as directed. From day two onward, gradually return to normal activities as your comfort allows. If you have been prescribed physical therapy alongside the injection, continue your therapy sessions and take advantage of the pain relief window to make the most progress with your rehabilitation program. Contact Spine Care New Jersey promptly if you experience fever, severe worsening of symptoms, or any new neurological changes after the procedure