Is pain radiating from the lower back to the leg sciatica?

If pain extends from the lower back or buttocks down through the thigh, calf, and into the foot, people commonly think of 'sciatica' or 'lumbar disc herniation'.

In fact, the lumbar nerve can be irritated, causing pain to radiate down the leg. However, pain originating from the joints of the lumbar spine and pelvis or from gluteal muscles may also be transmitted to the leg, and similar symptoms can occur in cases involving hip joint disorders, peripheral nerve issues, or vascular problems.

The path the pain takes down the leg should therefore be checked along with numbness or tingling and changes in sensation and muscle strength.

When it extends from the buttock down to the back of the thigh

We can consider both stimulation of the lumbar nerve and pain transmitted from around the lower back and pelvis. We examine whether the pain extends below the knee and whether there is numbness or weakness.

If the pain radiates down to the calf or foot

This may be pain caused by irritation of the lumbar nerve. We check whether the pain worsens with coughing, sneezing or certain positions, and whether ankle or toe strength has changed.

In cases where it extends to the front of the thigh or into the groin area.

We must also examine problems around the hip joint and pelvis, not just other nerves in the lower back.

If your legs hurt more when walking or standing

Nerve-related gait disorders caused by spinal stenosis can be identified. Checking whether symptoms improve when sitting or bending forward, or simply by standing still, can help distinguish a vascular problem.

Sciatica describes a pattern of nerve pain that extends from the lower back or buttock down the back of the leg.

It does not mean a single cause.

• When a disc stimulates a nerve
• In cases where the space through which nerves pass has become narrow
• In cases where there are degenerative changes in the spine
• If nerves are irritated around the buttocks
• When pain in other areas is transmitted to the leg

To distinguish the cause, a medical history interview and physical/neurological examination are required.

Location and path where pain begins

We check whether the pain starts in the lower back or buttock and where it travels through the thigh and calf.

Changes according to movement of the lumbar spine

We examine whether leg pain worsens or improves when bending and straightening the back, sitting, or standing.

Muscle strength examination

Compares the strength of the knee, ankle, and toes from side to side.

Sensory and reflex examination

Check whether there are areas with diminished sensation in the legs and feet, and whether there are differences in knee and ankle reflexes.

Nerve stimulation test

It may be checked whether the usual leg pain is reproduced when the leg is raised or the position is changed.

Hip and peripheral nerve examination

We can also check the hip joint movement, surrounding gluteal muscles, and peripheral nerves near the knee and ankle.

If you have the following symptoms, appropriate examinations and specialist consultations may take priority over general treatment.

• If leg strength suddenly drops or weakens rapidly
• If you experience dragging your foot or difficulty lifting your ankle
• If severe pain and numbness suddenly occur in both legs
• Changes in bowel and bladder control
• Reduced sensation in the perineum
• If pain begins after a major trauma
• If accompanied by high fever or chills

Not all patients require an immediate MRI just because pain has moved down to the leg.

In the following cases, an MRI may help determine the treatment direction.

• If muscle weakness progresses
• If there are changes in urination and defecation, or sensation in the perineum.
• If pain and numbness persist or worsen despite appropriate treatment
• When it is necessary to decide whether an injection or surgery is needed
• If infection, tumor, or other conditions are suspected

A disc finding on imaging may not correspond to the current pain, so it should be interpreted alongside the examination findings.

Maintain activity and adjust posture

Reduce postures that severely worsen pain, but maintain daily activities within a feasible range unless there are specific warning signs.

Chuna manual therapy

If there is no progressive muscle weakness or urgent neurological symptoms, and when it is necessary to manage movement and muscle function of the lumbar spine and pelvis together, this may be considered as part of the treatment plan.

It cannot be explained that Chuna manual therapy necessarily releases compressed nerves or returns discs to their original position. After treatment, it is necessary to assess the extent of leg pain and changes in muscle strength, sensation, and gait.

Acupuncture treatment and pharmacopuncture treatment

Depending on the patient's symptoms and examination findings, this may be selected for management of pain in the lower back, buttocks, and legs.

Exercise and Rehabilitation

While confirming pain and nerve function, we gradually restore movement of the lumbar spine and hip joint, lower limb muscle strength, and gait.

Medication and injection therapy

If muscle strength and sensation are stable, much pain radiating down the leg can be treated with the Chuna manual therapy, acupuncture, pharmacopuncture, and exercise described above. However, in the acute stage when pain is very severe, pain relievers or steroid injections around the nerve are sometimes used alongside them, and the effect of injections is usually closer to short-term pain control.

The more injections are repeated, the more risks such as elevated blood sugar and reduced bone health accumulate. Once the acute pain settles, nerve function is checked again, and recovery continues through Korean medicine treatment to regain movement of the lower back and pelvis.

Surgical evaluation

Surgical evaluation may be needed if muscle weakness progresses, cauda equina syndrome is suspected, or severe neurological symptoms and functional impairment persist.