Last Updated: 2026-06-23

The Nature of Your Symptoms Determines the Direction of Treatment

Back pain is not a single condition. Radicular pain that radiates into the leg and chronic muscle tension localized to the back arise through different mechanisms — and that means they require different treatments. Without first identifying the character of your symptoms, the underlying cause stays untouched.

Some people feel a shooting, tingling pain that travels from one buttock down the back of the thigh, through the calf, and into the foot. Others struggle to get out of bed each morning because the muscles on either side of the lower back have become rock-hard. The first is radicular pain; the second is muscle tension pain.

Radicular pain occurs when a nerve root becomes compressed or inflamed, spreading pain and numbness throughout the entire area that nerve supplies. Certain postures may intensify the leg tingling, coughing may worsen the pain, or one foot may feel partially numb. Muscle tension pain originates in the back itself — stiffness when rising after sitting for a long time, a dull pulling sensation when rotating or bending, or the feeling of a muscle suddenly "locking up" during movement in a specific direction.

Distinguishing between the two is an important part of the clinical examination. The straight leg raise test (raising the leg with the knee straight while lying down) and neurological reflex testing help screen for radicular pain, while imaging studies confirm the location of a disc herniation and the degree of nerve root compression. Muscle tension pain, by contrast, tends to show clear tenderness at specific pressure points on palpation and eases temporarily with stretching or postural change.

Even when the complaint is "back pain," completely different treatments are warranted depending on the mechanism. Targeting only the muscles when a nerve is being compressed leaves the source of symptoms untouched — and the reverse is equally true.

How Radicular Pain Develops and the Role of Nerve Block Injections

Most radicular pain originates at a nerve root. When a disc herniates or the facet joints at the back of the spine enlarge, the nerve root passing through the neural canal can be physically compressed or exposed to surrounding inflammation. Compression itself causes pain, but the inflammatory swelling that forms around the nerve root plays an even larger role in amplifying and sustaining it.

A nerve block injection targets this point directly. Delivering a combination of corticosteroid and local anesthetic to the nerve root — the source of the pain — may reduce inflammatory swelling and interrupt pain signal transmission. Because the medication must reach the precise location to produce the intended effect, image guidance during the procedure is essential. Real-time confirmation of needle tip placement using a C-arm fluoroscope or ultrasound before injecting is the standard approach. This is more accurate than relying on anatomical landmarks alone and can reduce unnecessary spread of medication into surrounding structures.

Having radicular pain does not mean every patient needs a nerve block. Active infection, significant clotting disorders, and poorly controlled blood sugar levels are situations that call for postponing or carefully reconsidering the procedure. This is why a specialist weighs the full picture — medical history, test results, and current condition — before deciding whether to proceed.

It is easy to misunderstand what a nerve block does. The goal is not simply to anesthetize pain temporarily. Rather, it aims to change the inflammatory environment around the nerve and create a window — while pain is reduced — during which nerve recovery and a return to daily activity become possible. How that pain-reduced period is used can influence the overall course of recovery.

The Rationale for Applying TECAR RF (Radiofrequency) Therapy to Chronic Muscle Tension

Chronic muscle tension appears frequently in patients whose back pain has been present for a long time. Many patients seen in the clinic have lower back muscles stuck in a sustained protective contraction. Avoiding painful movements causes certain muscles to fall out of use; the compensating muscles then become overloaded; and eventually both sets stiffen. At that point, surface-level massage or standard physical therapy may not reach the deeper tissue.

TECAR RF therapy — also known as Winback radiofrequency therapy — delivers high-frequency energy beneath the skin, generating heat within the tissue itself rather than applying heat from the outside. As electrical current passes through the tissue, resistive heating occurs and reaches deep muscles and connective tissue. When tissue temperature rises, blood vessels dilate and circulation increases, which may help ease muscle stiffness. The metabolic environment of tissue that has been chronically underperfused can potentially improve as a result.

TECAR RF uses two modes — Capacitive (CET) and Resistive (RET) — selected and combined according to the situation. CET mode suits the superficial muscles and connective tissue, while RET mode carries energy to deeper structures. For areas like the deep lumbar muscles where thick layers of tissue are stacked, both modes are often used together.

This therapy is not appropriate for everyone. People with implanted electronic devices such as a pacemaker, those who are pregnant, and areas overlying a malignant tumor all require individual evaluation. This is why a review with a specialist before treatment is necessary.

Criteria for Combining Both Treatments — The Dwells Approach

Radicular pain and muscle tension frequently coexist. Many patients have leg numbness from a herniated disc alongside stiff, guarded muscles around the lower back. When that is the case, there is a logical sequence.

A nerve block injection comes first to reduce inflammation and swelling around the nerve root. As the leg-radiating pain subsides, the postures and movements that had been avoided because of pain gradually become accessible again. If significant lumbar muscle stiffness persists at that stage, TECAR RF therapy is applied to restore circulation and warmth to the deep tissue. Breaking the cycle of pain → movement avoidance → muscle weakening → worsening pain requires this next step after the initial reduction in pain.

Pain relief does not mean the tissue has fully recovered. Even after pain resolves, actual tissue healing takes time, and how that period is managed influences whether symptoms return. To reduce the risk of recurrence, a gradual return to activity paired with muscle strengthening is recommended.

The two treatments are not always needed together. When radicular pain is mild and muscle tension predominates, TECAR RF alone may be the appropriate approach. When nerve compression is clearly present with minimal muscle tension, a nerve block on its own may be sufficient. The combination — or the choice of a single modality — is determined by the specialist after integrating imaging findings, neurological examination results, and the overall clinical assessment.

The treatment philosophy here centers on precisely image-guided procedures that go beyond simple pain suppression to address the underlying cause and reduce the risk of recurrence. The objective is not just to make the pain disappear temporarily, but to understand why it developed and change the structural conditions that produced it.

This content is provided for general medical information purposes only and may not apply to every individual situation. Please consult a specialist for an accurate diagnosis and personalized treatment plan.

Frequently Asked Questions

What can I expect after a nerve block injection — can I go home the same day? Most patients can return home after a short period of rest on the day of the procedure. Light daily activities can typically resume the following day. Temporary numbness at the injection site or transient leg weakness may persist for several hours, so driving and strenuous physical activity on the day of the procedure are best avoided.

How many TECAR RF sessions are needed before I notice a difference? This varies depending on the degree of muscle tension and the condition of the tissue, but improvement in deep-tissue circulation and muscle relaxation generally develops gradually over several sessions. Rather than expecting an immediate change after one or two treatments, it is important to plan the interval and total number of sessions together with your healthcare provider.

Do I need an MRI for back pain? MRI is useful for confirming the location and extent of nerve root compression and provides a basis for determining treatment direction when radicular pain is suspected. An MRI is not required for every patient with back pain, however — the decision is based on the character of your symptoms combined with the findings from a physical examination.

My main problem is chronic muscle tightness, not leg pain. Is a nerve block appropriate for me? When chronic muscle tension and achiness are the primary symptoms without radicular pain, treatment targeting deep-tissue circulation and relaxation is generally the first consideration rather than a nerve block. Nerve block injections are indicated when inflammation and swelling around a nerve root are the core cause of pain, so treatment selection depends on the nature of your symptoms.

Is there a risk of the pain returning after treatment? If deep muscle strength and flexibility have not fully recovered by the time pain subsides, some risk of recurrence remains. After treatment, gradually strengthening the muscles around the lower back within the range recommended by your care team can help support long-term stability.