Medial tibial stress syndrome (shin splints, runner's shin pain)
Behind the long medical name is something very recognisable: pain along the inner edge of the shin that comes on with running and jumping.
On this page
- What it actually feels like
- Why the shin becomes overloaded
- What to do in the first weeks: cut the volume, don't stop
- Shoes, surface and how you run
- Strength work is what fixes the cause
- Getting back to running without a second round
- When it is no longer shin splints: stress fracture
- The tight, bursting pain that disappears at rest
- Online consultation
Medicines commonly prescribed for Medial tibial stress syndrome (shin splints, runner's shin pain)
For informational purposes only. Always consult a doctor before using any medicine.
Dosage form: TABLET, 400 mgActive substance: ibuprofenManufacturer: Laboratorios Normon S.A.Prescription not requiredDosage form: ORAL SOLUTION/SUSPENSION, 100 mg/5mlActive substance: ibuprofenManufacturer: Farmalider S.A.Prescription requiredDosage form: DRESSING, 140 MGActive substance: diclofenacManufacturer: Teva Pharma S.L.U.Prescription not required
Behind the long medical name is something very recognisable: pain along the inner edge of the shin that comes on with running and jumping. It is the commonest reason runners stop training. Bone and the muscles attached to it react to repeated impact sooner than they manage to adapt to it, and the shin starts sending a signal. In itself this is not dangerous and it does settle, but shin pain has a more serious double — a stress fracture. The key point, though, is a different one: you will not get better by resting on the sofa. What works is not rest but reorganising the load.
What it actually feels like
The pain sits along the inner edge of the shin, in its lower or middle third — not at the front, as is often written. It is spread out lengthways: run a finger along the bone and the tender stretch measures several centimetres, sometimes almost a hand's width. It feels dull and dragging, sometimes with a sense of tightness in the muscles.
It develops to a predictable script, which is a handy way of telling where you are:
- at first it hurts only at the start of a run, eases off after a couple of kilometres, and comes back briefly afterwards;
- then the pain stays for the whole session and lasts noticeably longer once you stop;
- later it starts hurting when walking, on stairs, and sometimes at rest.
The first stage is still a conversation about training load. The third means matters have gone a long way and are best sorted out with a doctor. There is usually no swelling or redness; slight fullness along the edge of the bone can occur, but obvious swelling is a reason to look more carefully.
Why the shin becomes overloaded
The cause is nearly always the same: the load has grown faster than the bone could adapt to it. The familiar list is going back to running after a break, adding mileage suddenly before a race, bringing in speed sessions or hills, moving from trail to tarmac, changing shoes, or running more often.
Some things also make the shin more vulnerable:
- weak muscles in the lower leg and foot: the less they absorb the impact, the more of it reaches the bone;
- excessive pronation, a collapsed arch, or feet that are stiff or, conversely, too mobile;
- a short frequent stride is considerably softer than a long slow one, so a low cadence with the foot landing well ahead of the body punishes the shin more;
- always running on the same side of a cambered road, which leaves each leg working in different conditions;
- a higher body weight and shoes with a worn-out sole;
- eating too little for the training volume, vitamin D deficiency and, in women, periods that have stopped or become irregular. This point deserves separate attention: it means the bone is short of the material it needs to repair itself, and these are exactly the people who most often go on to a stress fracture.
What to do in the first weeks: cut the volume, don't stop
Giving up running for a month looks logical but works badly: the shin does not get any stronger in that time, and the pain comes back along with the old mileage. It is better to reduce the load to a level that does not hurt and hold it there.
- Cut your weekly volume by about half and remove what hits hardest: speed work, downhills and hard surfaces.
- Replace the kilometres you have taken out with non-impact work — cycling, cross-trainer, running in water, swimming. This keeps your fitness and removes the temptation to jump straight back to the old volume.
- The pain rule is simple: no more than mild during the run, and gone by the next morning. If it hurts more the following day than it did the day before, the load was too much.
- Ice on the sore area for 15 to 20 minutes after training eases the discomfort. If needed, a short course of a painkiller — paracetamol or an anti-inflammatory — with the dose and duration best agreed with a doctor or pharmacist.
- Stretching the shin through pain and grinding it with a hard roller until your eyes water achieves nothing: gentle calf stretching is useful, but it is no substitute for reducing the load.
Shoes, surface and how you run
Footwear is the first thing to look at. Trainers wear out well before they stop looking presentable: a worn or compressed outsole, a heel counter leaning to one side, a midsole that has lost its spring — all of it changes how the foot meets the ground. A pair that has covered many hundreds of kilometres has done its work.
Change the model gradually: switching abruptly to a shoe with different geometry is itself a classic cause of shin pain. Insoles help some people, especially with a markedly flat foot, but they are not a universal answer.
With surfaces the logic is plain: the harder it is, the more impacts. It is worth moving some runs onto trail, a track surface or a woodland path. On a cambered verge, either alternate sides or find level ground.
Of everything filed under "running technique", the single change that reliably works is taking shorter, more frequent steps — around five to ten per cent more steps per minute than you take now. That reduces the impact on the shin without rebuilding your style. There is no need for a radical relearning of how you run, least of all while in pain.
Strength work is what fixes the cause
It is the part most often skipped, and without it the shin stays exactly as vulnerable as it was. The point is to teach the muscles of the lower leg and foot to absorb the impact instead of the bone. Two or three short sessions a week are enough:
- standing heel raises — on both legs first, then on one, lowering slowly; and the same with the knee bent, to bring in the deeper soleus muscle;
- foot exercises: drawing up the arch without curling the toes, gripping a towel with the toes, balancing on one leg including with the eyes shut;
- hip and glute work — single-leg squats, hip abduction, glute bridges: a pelvis that drops on the standing leg overloads the shin below it;
- once the pain has gone, short hopping drills, skipping rope and bounding. These give bone and tendon back their habit of taking impact, and without this stage the return to running often ends in a second round of the same problem.
The load in these exercises is built up just as gradually as running, by the same rule: it should not hurt more the next day.
Getting back to running without a second round
The return is a stage in its own right, not the moment when "it stopped hurting". The sign that you can start adding: you walk normally, can rise onto the toes of the affected leg, and can hop on it without pain.
From there, a few rules apply. Add no more than a tenth of your weekly volume per week. Run on alternate days. Bring back one thing at a time — distance first, then pace, then hills, rather than everything at once. And keep strength work in the diary permanently, not just until the pain stops: that is what holds the result. The whole thing usually takes from a few weeks to a couple of months; if nothing has changed in that time, you need a doctor.
When it is no longer shin splints: stress fracture
This is the most important part of the page. A stress fracture is a crack in the bone from repeated loading, and it calls for an entirely different regime: not less running, but taking the weight off. Missed, it turns into a complete fracture. It is distinguished by:
- pain at a single point. Not a band several centimetres long, but a coin-sized spot you can cover with a fingertip, where pressing produces sharp pain;
- pain at rest and at night, waking you or keeping you from falling asleep;
- pain when hopping on one leg — a simple check you can do yourself: hop a few times on the sore leg. With a stress fracture this is usually sharply painful;
- the pain starts earlier and earlier in the run and takes longer and longer to settle afterwards;
- a visible swelling over the tender spot.
With these signs you need a doctor, and not in a month's time. One important detail: a plain X-ray often shows nothing in the first weeks, so a normal film does not rule the diagnosis out — if the picture is convincing, an MRI scan is arranged. Fractures on the front surface of the tibia are a particular concern: they heal poorly and need longer, stricter treatment. It is also worth asking about causes coming from inside the body — diet, vitamin D, periods — if the training was ordinary and the bone still failed.
The tight, bursting pain that disappears at rest
There is one more condition that gets mistaken for shin splints for years: chronic exertional compartment syndrome. The muscles of the lower leg are enclosed in stiff fascial compartments; with exercise they fill with blood and swell, the fascia does not stretch, and the pressure inside rises. The picture is very distinctive:
- not a dull ache but a sense of bursting pressure and stony tightness in the shin;
- it appears strictly with exercise, and almost always at the same kilometre or the same minute of the run;
- it builds up and forces you to stop, then eases at rest within minutes or an hour or so;
- it often comes with numbness, pins and needles and weakness of the foot; sometimes the foot starts slapping down and catching its toe.
It is treated differently: cutting volume and doing strength work usually will not solve it. The diagnosis is confirmed by measuring the pressure inside the muscle compartments; changing running technique and switching the type of exercise help, and some people eventually need a small operation to release the fascia. So if the description sounds familiar, say so to the doctor plainly — otherwise you will spend a long time being treated for something else.
Do not confuse this with the acute form: if the shin has become tight and severely painful after an injury or a blow, the pain is increasing, does not ease at rest, and the foot goes numb and pale, this is an emergency and an ambulance is needed; in Spain, Italy, Portugal, Poland and Ukraine the single number is 112.
Online consultation
Shin pain is a subject where an online appointment gives a great deal. The Oladoctor doctor will go through with you exactly where it hurts, how the pain has changed, and what was happening in your training beforehand; will separate ordinary overload from a stress fracture and from compartment syndrome using precisely the signs that are easiest to miss; and will say whether imaging is needed and which kind. Then comes the practical part: what volume to drop to, what to replace running with meanwhile, which exercises to do and on what schedule to build back. It is also worth a separate conversation about underlying causes if the bone gives way under ordinary training: that discussion is about diet, vitamin D and the menstrual cycle. If the description shows you need a hands-on examination or urgent care, you will be told so straight away.
This material is for information only and does not replace medical advice.
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