Shin splints — medial tibial stress syndrome — is pain along the inner edge of the lower two-thirds of the shin that comes on with running. It is a bone-loading problem, which is why the treatment is load management rather than stretching, and why the “low-impact” substitutes people reach for are often the wrong ones.
Who gets shin splints?
In the pooled running-injury data it accounts for 9.4% of running injuries by incidence, second only to Achilles tendinopathy at 10.3% — so it is among the most common injuries runners get, though that is a share of injuries rather than a per-runner rate. Beginners and people who have recently increased their load are over-represented.
A systematic review and meta-analysis of risk factors identified female sex (OR 2.35, 95% CI 1.58 to 3.50), higher body weight, greater navicular drop, previous running injury (OR 2.18, 95% CI 1.00 to 4.72 — note the lower bound sits on the null) and greater hip external rotation with the hip flexed. A separate review found reduced lean leg girth a likely additional factor — and interestingly not because those legs produce less force, since the reduction was unrelated to maximal force capacity. That finding came from military recruits rather than runners.
The reviewers add a warning worth repeating: the underlying studies have real methodological problems, and these associations should be held loosely. None of them is a screening test. Read the caveats in what actually prevents running injuries before you go looking for your navicular drop.
What it is not
It is not a muscle problem, so stretching is not the treatment. Calf stretching may feel good and does not address the bone.
It is not compartment syndrome. That presents as tightness and pain that builds predictably with exercise and eases with rest, often with numbness or foot drop. It is a different problem and needs assessment.
It may be a stress fracture. This is the distinction that matters. Shin splints produce diffuse pain over several centimetres of bone that often warms up during a run. A stress fracture produces focal pain — you can put one finger on it — that gets worse as you run, and may hurt at rest or at night. If your shin pain is focal, worsening, or present at rest, stop running and get it imaged.
What actually treats shin splints?
Reduce the load, do not eliminate it. Conservative management — relative rest, and physiotherapy — remains the cornerstone. Complete rest deconditions the bone you are trying to strengthen; the aim is to get below your symptom threshold and rebuild.
Rebuild gradually. Run-walk is the sensible re-entry. Pain during the run that settles within 24 hours is generally acceptable; pain that lingers into the next day means you did too much.
Be careful which cross-training you pick. Incline walking feels gentle because the impact per step is lower, but low impact is not the same as low bone load: going uphill increases the muscular pull on the tibia. We should be straight about the strength of that evidence — the figure often quoted, that uphill produces roughly three times the bone strain of walking, comes from implanted strain gauges in two people and was measured during uphill and downhill zigzag running, not incline walking, which has not been measured directly. So treat it as a reason for caution rather than a number. The mechanism is real; the size is unknown. Non-weight-bearing options — pool running, cycling, elliptical — are the standard choice while a bone problem settles. Our incline walking guide sets out where it does and does not belong.
Orthoses and shockwave therapy have some support for reducing pain, but the evidence base is not strong and neither is a first move. Worth knowing that one risk-factor review found prior orthotic use was itself associated with shin splints — probably because people who already had trouble were the ones prescribed them, but it is a reason not to treat orthoses as an obvious answer.
Check your vitamin D. Bone problems in Indian runners sit against a background of widespread deficiency — see does running strengthen your bones.
When to see someone
Focal pain, night pain, pain at rest, or shin pain that has not improved after two to three weeks of reduced load needs a physiotherapist or doctor. A website cannot tell the difference between a stressed bone and a fractured one, and the two are managed differently.
References
Kakouris N, et al. A systematic review of running-related musculoskeletal injuries in runners. J Sport Health Sci, 2021. · Burr DB, Milgrom C, Fyhrie D, et al. In vivo measurement of human tibial strains during vigorous activity. Bone, 1996;18(5):405–10. · Newman P, Witchalls J, Waddington G, Adams R. Risk factors in the development of medial tibial stress syndrome. Open Access J Sports Med, 2013;4:229–41. · Reinking MF, Austin TM, Richter RR, Krieger MM. Medial tibial stress syndrome in active individuals: a systematic review and meta-analysis of risk factors. Sports Health, 2017;9(3):252–61. · Mattock JPM, Steele JR, Mickle KJ. Are leg muscle, tendon and functional characteristics associated with medial tibial stress syndrome? A systematic review. Sports Med Open, 2021;7:71. · Menéndez C, Batalla L, Prieto A, et al. Medial tibial stress syndrome in novice and recreational runners: a systematic review. Int J Environ Res Public Health, 2020.