Shin Splints: Symptoms, Causes, Recovery and How to Stop Them

Shin splints is the everyday name for medial tibial stress syndrome, and the everyday name is doing a lot of work to hide how varied the condition is. What it describes is pain along the inner border of the tibia caused by repetitive loading, sitting somewhere on a spectrum that runs from irritated tissue at one end to a stress fracture at the other. Getting a handle on where you sit on that spectrum is the first useful thing you can do.

It is common enough that most runners meet it eventually. Studies put the incidence in runners at roughly 13.6% to 20%, and among military recruits, who go from ordinary fitness to daily marching in a matter of weeks, it climbs to as high as 35% (scoping review of MTSS epidemiology, biomechanics and risk factors). That pattern tells you almost everything about the cause.

What shin splints feel like

The classic presentation is a dull, diffuse ache along the inner edge of the shin, typically in the lower two thirds. Press along the bone with your thumb and you will find tenderness spread over several centimetres rather than concentrated at one spot. Early on it hurts for the first mile, fades as you warm up, and comes back with interest an hour after you stop. Left alone, it starts hurting earlier in the run, then during easy walking, then when you are sitting still.

That spread-out quality matters diagnostically. A tibial stress fracture hurts in one place you can cover with a fingertip, hurts more as the run goes on rather than less, and often aches at night. If that description fits better than the one above, stop running and see a GP or physio rather than working through this guide.

What actually causes them

Bone is living tissue and it remodels in response to load, but it remodels slowly. When you increase running volume faster than the tibia can lay down new bone, microdamage accumulates faster than repair, and the periosteum and surrounding soft tissue get irritated in the process. Everything people blame for shin splints is really a variation on that theme.

The risk factors that show up repeatedly in the literature are worth knowing because several are fixable. Higher BMI and lower aerobic fitness both increase risk, which is one reason absolute beginners get hit hardest. So does a larger navicular drop, meaning an arch that flattens a lot under load. Reduced hip external rotation range of motion appears too, along with tightness and weakness in the triceps surae, the calf complex. Female sex and smoking also feature in the data.

Then there is the boring stuff that causes most cases anyway: adding five kilometres a week to your total instead of one, moving your runs from grass to pavement, buying a pair of shoes in 2023 and still running in them, or coming back from four weeks off and picking up exactly where you left off.

What to do in the first two weeks

Cut the load until it stops hurting. That is not the same as complete rest, and complete rest is usually the wrong answer because deconditioning makes the return worse. Replace running with cycling, rowing or swimming, all of which keep your aerobic fitness intact while the shin gets a break from ground reaction forces. Our rowing machine versus running comparison covers the trade-offs if you are choosing a cross-training option.

Ice the area for ten to fifteen minutes after activity if it is sore. Take over-the-counter painkillers if you need them, though be aware that masking the pain so you can run on it defeats the purpose. Compression sleeves and shock-absorbing insoles both appear in reviews of MTSS management as measures that speed recovery, and they are cheap enough to be worth trying.

The one thing not to do is stretch aggressively into the painful area in the belief that tightness is the problem. Calf flexibility is worth improving, but yanking on an irritated shin does nothing useful.

The exercises that actually help

Strength is the part people skip and it is the part that stops recurrence. Two sessions a week is enough.

1. Calf raises, straight leg. Stand on the edge of a step, lower your heels below the step under control for three seconds, then push up. Three sets of 12 to 15. Add weight once bodyweight is easy. Our calf raises guide covers the technique in detail.
2. Calf raises, bent knee. Same movement with a slight knee bend, which shifts the work to the soleus. The soleus takes enormous load during running and is routinely undertrained.
3. Tibialis raises. Sit with your heels on the floor and lift your toes towards your shins against resistance, or stand with your back to a wall and pull your toes up. Three sets of 20. This trains the muscle on the front of the shin that decelerates your foot on landing.
4. Single leg balance work. Thirty to sixty seconds per leg, eyes open then closed. Cheap, dull, and it improves the ankle control that reduces the sideways forces on the tibia.
5. Hip strength. Given the association between restricted hip external rotation and MTSS, glute work belongs in the plan. Clamshells and glute bridges are the obvious starting points.

Getting back to running

The rule of thumb is that you can start running again when you can walk briskly and hop on the affected leg without pain, and when pressing along the bone no longer makes you flinch. Start with a run-walk structure, something like one minute running and two minutes walking for twenty minutes, three times a week on soft, even ground.

From there, build weekly volume by around ten per cent at a time. It is a crude rule and it is not sacred, but it errs on the side of the tissue adapting rather than failing, and that is the whole game. Keep the surface soft where you can, keep at least one rest day between running days for the first few weeks, and hold your cross-training in place rather than dropping it the moment you can run again.

Replace your shoes if they have covered more than 500 to 800 kilometres. Midsole foam loses its cushioning long before the upper looks worn out, and running in dead shoes is one of the cheapest problems to fix. If you are tracking mileage properly, a GPS watch makes shoe rotation trivially easy to monitor; our best Garmin watch UK guide covers the options.

What about treadmills?

A treadmill belt is softer than pavement and the surface is perfectly even, both of which reduce the impact load on a recovering shin. Used sensibly it is a reasonable bridge back to outdoor running. What it does not do is make you immune: the same too-much-too-soon mechanism applies, and the temptation to hold a fixed pace because the machine makes it easy can push you harder than you would run outdoors. If you are building a home setup around recovery, our best treadmills for home use guide is the place to start.

Walking is underrated here too. Steady walking maintains circulation and general conditioning at a fraction of the impact, and the physical activity guidelines that underpin NHS advice are met comfortably by brisk walking alone (UK physical activity guidelines for adults).

Recommended reads

• Calf raises: technique and progressions
• Calf stretches worth doing
• Six mistakes to avoid on a treadmill
• Rowing machine vs running
• Best foam roller UK
• More workout and technique guides