Shin Splints: Why the Front of Your Shin Aches — and How to Actually Fix It

Reviewed July 23, 2026 · Dr. Carlos Yu

"It's not sharp, it's not sore muscle, it's this dull ache right along the bone" — that's how most patients describe it to me. Shin splints (the medical term is medial tibial stress syndrome) are one of the most common overuse injuries I see in new runners, returning runners, and anyone who's just ramped up walking, hiking, or standing on their feet. Here's what's actually going on, what helps, and when it's something more than shin splints.

What shin splints actually are

Every time your foot hits the ground, the muscles along your shin (mainly tibialis posterior and the deep calf muscles) contract to control your arch and slow your foot down. The tendons of those muscles anchor onto the tibia — the shin bone — along its inner, lower edge. Do more of that loading than your leg is conditioned for, and the bone and its lining get irritated where those tendons pull on it. That's shin splints: a stress reaction in the bone, not a pulled muscle.

The classic pattern: an ache along the inner shin that's worst at the start of a run or walk, may ease once you're warmed up, and comes back afterward — often worse the next morning.

The single biggest cause, by far, is too much, too soon: a sudden jump in mileage, a switch from soft trails to pavement, new or worn-out shoes, or going from sitting all day to standing all shift. Bone and tendon adapt to load, but slowly — faster than they can keep up is exactly when this starts.

What actually helps

Back off the load — don't stop moving entirely. Cut your running/walking volume by roughly a third to a half for 1–2 weeks, or swap in a lower-impact activity (cycling, swimming, elliptical) that doesn't reproduce the pain. Rebuild in small increments — the classic guideline is no more than about a 10% increase in weekly volume.
Progress gradually once you restart. This is the step people skip. Build back slowly over several weeks, not days, even once it feels fine — the bone remodels more slowly than the pain resolves.
Ice after activity. 15–20 minutes along the sore section of shin, a few times a day early on, takes the edge off.
Strengthen and stretch the calf and foot. Calf raises (both straight- and bent-knee), and exercises for the muscles that support your arch (e.g., towel scrunches, single-leg balance work) build the tissue's tolerance for load over time. Pair with a standing calf stretch against a wall.
Check your footwear and surface. Worn-out shoes (generally past 500–800 km) lose their shock absorption. Where possible, favor softer surfaces — trail or track over concrete — while you're rebuilding.
A practical cue I give patients: many people overstride when they run — reaching the foot out ahead of the body and landing heavily. Try shortening your stride slightly and aiming for a quicker, quieter turnover (a small increase in steps per minute), landing more under your hips than out in front. It sounds subtle, but it measurably reduces the impact load your shin absorbs with every step, and it's one of the few running-form tweaks with decent evidence behind it.

Most cases improve substantially over 2–6 weeks of consistent load management; some take longer, especially if the "too much too soon" trigger keeps getting repeated.

When to see your doctor

Shin splints are a diagnosis of exclusion — a few other things can look similar and need a different plan. Book a visit, or come in sooner, if you notice:

Pinpoint, focal pain over one small spot on the bone, rather than an ache along a stretch of the shin — this raises concern for a tibial stress fracture, not simple shin splints.
Pain at rest or at night, or pain that keeps getting worse despite backing off activity — both are red flags for stress fracture rather than the usual overuse pattern.
Swelling, tightness, or numbness/tingling in the leg or foot that comes on predictably at a certain point in exercise and eases with rest — this can suggest chronic exertional compartment syndrome, which needs a different workup.
No real improvement after 2–3 weeks of genuine load reduction, or symptoms that don't fit the pattern described above.

If any of these apply, please don't just push through — a stress fracture that's missed and kept loaded can progress to a full fracture.

General information, not a substitute for individual medical advice. If your symptoms don't fit the pattern above, or you're unsure, see your family doctor.

— Dr. Carlos Yu, Ajax Harwood Clinic