Shin Pain That Starts During a Run and Gets Worse the Longer You Go

Shin splints — the clinical term is medial tibial stress syndrome, or MTSS — is one of the most common overuse injuries in runners, military recruits, and anyone who has recently increased their training load. The pain runs along the inner edge of the shinbone, typically in the lower two-thirds of the tibia, and usually starts as a dull ache that eases when you stop running. Left unaddressed, it tends to get worse: the pain starts earlier in your run, lasts longer afterward, and eventually appears with walking.

What most patients do not realize is that shin splints are not just a shin problem. The way your foot strikes the ground, how much it pronates, and whether your footwear absorbs or amplifies that impact all determine how much stress reaches the tibia with every step. Treating the shin in isolation without addressing the foot mechanics that caused it is why shin splints keep coming back. Our podiatrists treat shin splints at our Coon Rapids and Golden Valley offices, serving patients across the north and west metro including Maple Grove, Champlin, Blaine, Plymouth, Wayzata, Minnetonka, and Edina.

Focal, pinpoint bone pain at a single spot on the shin — not diffuse aching along a broad area — needs imaging to rule out a tibial stress fracture before you continue training. A stress fracture can feel very similar to shin splints early on, and continuing to run on one risks a complete fracture. If pressing on one specific spot causes sharp, localized pain, contact our office before your next run.

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What Is MTSS?

MTSS involves irritation and inflammation of the periosteum — the tissue layer covering the tibial cortex — along with microtrauma to the muscles that attach to the inner shin: the soleus, tibialis posterior, and flexor digitorum longus. Repeated impact causes these structures to pull on the periosteum faster than the bone can adapt, producing the characteristic diffuse aching along the medial tibial border. MTSS exists on a continuum with tibial stress fracture: at one end is periosteal irritation without bone damage; at the other is a complete stress fracture. This spectrum is why distinguishing the two matters and why imaging is sometimes needed even when the diagnosis seems straightforward.

Causes & Risk Factors

MTSS is almost always multifactorial. The most common contributors:

• Sudden increase in training load — mileage, intensity, or surface hardness increased faster than the tibia can adapt. The most common single cause.
• Overpronation — excessive inward rolling of the foot with each step increases the rotational and bending stress transmitted to the tibia through the attached muscles. Flat feet and low arches are the primary biomechanical risk factor.
• Inadequate footwear — worn-out cushioning, low heel-to-toe drop shoes on unprepared runners, and unsupportive footwear all increase tibial loading.
• Hard or cambered running surfaces — pavement and concrete transmit significantly more impact force than track or trail surfaces. Cambered roads cause the downhill foot to pronate more with every stride.
• Female sex and lower bone density — women have higher MTSS rates, partly due to biomechanical differences and partly due to higher rates of low bone density, particularly in athletes with the Female Athlete Triad.
• Prior history of MTSS — one of the strongest predictors of recurrence, reinforcing the importance of addressing root causes rather than simply resting until the pain goes away.

Symptoms — and How to Tell MTSS from a Stress Fracture

The symptom pattern of MTSS is distinct enough to be clinically recognizable, but overlaps enough with tibial stress fracture that the distinction deserves attention:

Feature	Shin Splints (MTSS)	Tibial Stress Fracture
Pain location	Diffuse aching along a broad stretch of the inner shin — often 5 cm or more	Focal, pinpoint tenderness at a specific spot on the bone
Pain trigger	Builds during activity, eases quickly with rest	May be present with walking; does not ease quickly
Tenderness on palpation	Broad, diffuse tenderness along the medial tibial border	Sharp, well-localized tenderness at one spot
X-ray	Usually normal	Normal early on; periosteal reaction at 2–3 weeks
MRI	Periosteal edema without fracture line	Bone marrow edema; fracture line in complete fractures
Response to rest	Improves relatively quickly with rest	Slower to resolve; recurs with loading before healed

If you are unsure which one you have: the safest approach is to stop running and get evaluated. Running through a tibial stress fracture risks a complete fracture. Running through MTSS will worsen it but is unlikely to cause a serious acute injury. When in doubt, imaging resolves the question — an MRI will differentiate the two definitively.

Diagnosis

Diagnosis starts with a thorough history and physical examination. We assess pain distribution, training history and recent changes, gait and foot mechanics, footwear, and the specific location and character of tenderness along the shin. We also evaluate for overpronation and assess calf and ankle flexibility, which directly affect tibial loading during running.

• X-ray — typically normal in MTSS but obtained to rule out stress fracture when focal tenderness is present or symptoms are not resolving as expected.
• MRI — the definitive study when stress fracture needs to be excluded. Identifies the severity of bone stress involvement and differentiates periosteal edema (MTSS) from cortical stress reaction and fracture.
• Gait analysis — observational assessment of pronation, foot strike pattern, and lower limb alignment, which informs orthotic prescription and footwear recommendations.

Treatment at Family Foot & Ankle Clinic

The most common reason shin splints keep recurring is treating only the symptom — the shin pain — without correcting the mechanics that caused it. Our treatment approach addresses both.

Immediate Management

• Relative rest: reduce or stop the aggravating activity. Complete rest is rarely necessary — non-impact cross-training (swimming, cycling, pool running) maintains fitness while removing tibial impact load. The goal is pain-free training modification, not bed rest.
• Ice: 15–20 minutes to the shin after activity to reduce periosteal inflammation. Most useful in the acute and subacute phase.
• NSAIDs: short-term use for pain and inflammation management. Not a long-term solution and should be tapered as rehabilitation progresses.

Addressing the Root Cause

• Custom orthotics: for patients with overpronation, a custom orthotic corrects the excessive inward foot rolling that increases rotational stress on the tibia with every step. This is the most durable mechanical intervention for recurrent MTSS. More on our Custom Orthotics page.
• Footwear correction: a motion control or stability running shoe with a 10–12 mm heel-to-toe drop provides appropriate pronation control and cushioning. Avoid sudden transitions to minimalist or zero-drop shoes, which significantly increase tibial loading in runners who are not conditioned for them. See our Shoe Recommendations Guide.
• Training modification: graduated return to running following the 10% rule — no more than 10% increase in weekly mileage. Alternate hard and easy days. Incorporate softer surfaces where possible.
• Calf and tibial muscle flexibility: tight calf muscles increase the pull of the soleus and tibialis posterior on the tibial periosteum. Consistent gastrocnemius, soleus, and tibialis anterior stretching is a standard component of MTSS management. Our Shin Splints Home Care Program covers all three stretches with technique and daily routine.
• Strengthening: hip abductor and core strengthening reduce the rotational forces that reach the tibia during running. Foot and ankle strengthening — particularly tibialis anterior and posterior — helps control pronation dynamically.

Shockwave Therapy (EPAT) for Recalcitrant MTSS

Shockwave therapy (EPAT). For MTSS that has not responded to 8–12 weeks of conservative management, shockwave therapy delivers acoustic pressure waves to the tibial periosteum to stimulate tissue remodeling and reduce chronic inflammation. Evidence supports its use in recalcitrant MTSS when standard conservative measures have been exhausted. Non-invasive, in-office, no downtime, typically three to six sessions. Offered as a cash-pay service with package pricing available. → See our Shockwave Therapy (EPAT) page.

Return to Running

Returning to running too early is the most common cause of recurrence. Follow these principles:

• Pain-free walking for at least one week before beginning any running
• Start with a run-walk protocol — alternate 1–2 minutes of easy running with 1–2 minutes of walking, building running duration gradually over 2–4 weeks
• Run on softer surfaces (grass, track, trail) during the early return phase and stop if pain above 3/10 develops
• New orthotics and updated footwear should be in place before resuming regular training, and mileage should not increase more than 10% per week

Frequently Asked Questions

How long do shin splints take to heal?

Mild MTSS with early intervention typically resolves in 2–4 weeks of relative rest and modified activity. Moderate cases take 4–8 weeks. Severe or long-standing MTSS that has been running through can take 8–12 weeks or longer. Healing is significantly slower in patients who continue high-impact training through symptoms rather than modifying activity early.

Can I run through shin splints?

Not without worsening them. Continuing to run at the same volume and intensity through MTSS pain will progress the injury along the spectrum toward bone stress reaction and eventually stress fracture. Modified activity — reduced mileage, softer surfaces, cross-training — is the right approach, not pushing through. If pain is present from the very first step of a run, stop running that day.

Why do my shin splints keep coming back?

Recurrent MTSS almost always means the underlying cause was not fully addressed. Resting until the pain goes away and then resuming the same training on the same surfaces in the same shoes produces the same injury. The three most common unaddressed drivers are overpronation without orthotic correction, inadequate or worn-out footwear, and a training load progression that is too aggressive. A formal biomechanical evaluation and gait analysis resolves which factor is most responsible in your case.

Shin Splints That Keep Coming Back? Let’s Address the Cause, Not Just the Symptom.

Most recurrent shin splints trace back to a foot mechanics problem that has never been formally assessed. Book an appointment at our Coon Rapids or Golden Valley office and we will evaluate your gait, foot type, and footwear, and build a plan that actually addresses what is driving the injury.

Call 763-421-7300  |  Book online

Serving Coon Rapids, Golden Valley, Maple Grove, Champlin, Blaine, Plymouth, Andover, Wayzata, Minnetonka, Edina, and all Twin Cities communities.

Related Services & Conditions

• Stress Fractures
• Custom Orthotics
• Shockwave Therapy (EPAT)
• Plantar Fasciitis
• Achilles Tendinitis & Tendinosis
• Second Opinion / Foot Pain Not Improving

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