Sciatica: When It's a Nerve Problem vs. a Muscle Problem

You're sitting at your desk in Orem, and a deep ache runs from your low back down the back of your leg. Standing up doesn't help. Walking sometimes helps, sometimes makes it worse. Someone tells you, "That's sciatica." But what does that actually mean — and why does it keep coming back?

Sciatica is one of the most misused words in pain. It's often used to describe any pain that travels down the leg. The truth is more interesting, and more useful: some sciatica is a nerve problem, and some sciatica is a muscle problem. The treatment for each is very different. Knowing which one you have is the first step to getting out of pain.

What Sciatica Actually Means

The sciatic nerve is the largest nerve in your body. It runs from your low back, through the buttock, and down the back of the leg to the foot. When this nerve gets irritated anywhere along its path, you feel pain, tingling, numbness, or weakness in the leg. That symptom pattern is what we call sciatica.

But the word only describes what you feel. It doesn't tell us why. And without the why, treatment is a guessing game.

When It's Truly a Nerve Problem

Sometimes the nerve itself is being compressed or pinched. A bulging disc in the low back can press directly on a nerve root. A narrowing of the spinal canal — what doctors call stenosis — can crowd the nerves passing through. In these cases, certain positions reliably make the pain worse, and an MRI usually shows a clear culprit.

When the nerve is the problem, treatment focuses on giving the nerve more room and calming inflammation around it. We assess movement, posture, and the tissues that surround the nerve. We work to restore mobility without aggravating the nerve further. Strength matters here too, because muscles that support the spine reduce the load that's pinching the nerve in the first place.

When It's Actually a Muscle Problem

This is where many patients have spent years on the wrong path. Tight, irritated muscles in the low back, hip, and buttock can refer pain down the leg in a pattern that feels exactly like sciatica. The piriformis, the deep glutes, and the muscles along the spine can all create this. The nerve is fine. The muscle is the source.

Why does this happen? Pain comes from tissues that thicken and stiffen. The harder the tissue, the more irritated the nerve endings inside it become. That tightness usually comes from strain — and strain often comes from muscle inhibition, which means a muscle has been turned down by your nervous system and stopped doing its job. Neighboring muscles then have to overwork. They thicken. They stay tight. And that tightness sends pain down the leg.

Your nervous system controls the strength of every muscle. Pain turns the muscle tone dial down. Restoring tone turns the dial back up — muscles fire faster, support the joint better, and the strain that was creating the pain quietly fades.

Why the Difference Matters

This is the part most patients have never had explained to them. Stretching a tight piriformis when the real problem is a pinched nerve in the low back can make things worse. Doing nerve glides for a muscle problem rarely helps. Generic sciatica advice often misses the mark because it treats every leg pain the same way.

A thorough evaluation is the difference. We assess strength one muscle at a time to find which muscles have gone offline. We look at how the nerve responds to movement. We check tissue quality through the back, hip, and leg. We look at your medical history for clues. By the end of the visit, you know whether your sciatica is a nerve problem, a muscle problem, or both — and what the path forward looks like.

What to Do Next

If you've been told you have sciatica and treatment hasn't worked, the diagnosis is likely incomplete. Sciatica is not one thing. It's a symptom that points to a deeper question, and that question deserves a real answer.

Muscle IQ Physical Therapy in Orem spends more time in evaluation than most clinics, because that's where success starts. We use systematic strength testing, manual therapy, and advanced exercise equipment to address both nerve and muscle sources of leg pain. Many of our patients have tried other things first. Most are surprised by how different a thorough evaluation feels.

You can get better. Strength is coming back. Pain can go away.

Take control of your health today by calling Muscle IQ at (801) 224-9393 to schedule your first appointment, or schedule an evaluation at muscleiq.com.