Shin splints vs stress fractures: what's the difference?

Pain in the shin is one of the most common complaints among runners, footballers and anyone who has recently increased their training. Two conditions that often cause this type of pain are shin splints and stress fractures.

Although they can feel similar at first, they are very different injuries and require different approaches to treatment. Knowing the difference can help you get the right care and avoid making the problem worse.

What Are Shin Splints?

Shin splints, also known as medial tibial stress syndrome (MTSS), occur when the muscles, tendons and connective tissues attached to the shin bone become irritated through repeated stress.

They're usually caused by overuse rather than a single traumatic event.

Common risk factors include:

• Increasing your running distance or intensity too quickly.

• Starting a new training programme.

• Running on hard surfaces.

• Wearing worn-out footwear.

• Muscle weakness or reduced flexibility.

• Training without enough recovery time.

Symptoms of Shin Splints

Shin splints typically cause:

• A dull ache along the inside edge of the shin.

• Pain that develops gradually during exercise.

• Tenderness over a broad area of the shin.

• Symptoms that improve with rest.

• Stiffness when you first start exercising, which may ease as you warm up.

The discomfort often affects several centimetres of the shin rather than one specific point.

What Is a Stress Fracture?

A stress fracture is a small crack in the bone caused by repeated loading over time.

Rather than occurring after one significant injury, stress fractures develop when the bone is unable to repair itself quickly enough between training sessions.

Stress fractures most commonly affect runners, military recruits and athletes involved in repetitive impact sports.

Symptoms of a Stress Fracture

Signs that may suggest a stress fracture include:

• Pain that becomes progressively worse over days or weeks.

• Tenderness over one small, well-defined spot on the bone.

• Pain that continues even after you stop exercising.

• Discomfort when walking or hopping.

• Swelling around the painful area.

• Pain that may eventually occur at rest or during the night.

Unlike shin splints, stress fracture pain usually becomes more severe if you continue training.

Shin Splints vs Stress Fracture: The Key Differences

Shin Splints	Stress Fracture
Pain spread over a larger area	Pain in one small, specific spot
Often eases as you warm up	Usually worsens with activity
Improves with rest	May remain painful after exercise
Soft tissues are irritated	The bone itself is injured
Usually managed with rehabilitation	May require a prolonged break from impact activities

While these differences can be helpful, it's not always possible to distinguish between the two without a thorough clinical assessment.

Why Do They Happen?

Both conditions are often linked to similar factors.

These include:

• Rapid increases in training volume.

• Poor recovery between sessions.

• Muscle weakness.

• Reduced strength in the hips or calves.

• Changes in footwear.

• High training loads without adequate rest.

In some people, reduced bone strength or nutritional factors may also increase the risk of stress fractures.

Can You Continue Exercising?

This depends on the diagnosis.

With shin splints, it's often possible to continue exercising with some modifications while reducing the activities that aggravate your symptoms. Cross-training, strength work and a gradual return to running are commonly part of rehabilitation.

A stress fracture is different. Continuing high-impact activities despite ongoing pain can cause the injury to worsen, potentially leading to a complete fracture that takes much longer to heal.

If you're unable to walk comfortably, pain is becoming increasingly severe, or you have pain at rest or during the night, it's important to stop impact exercise and seek professional advice.

How Are These Injuries Treated?

Treatment for Shin Splints

Rehabilitation typically focuses on:

• Temporarily reducing training volume.

• Gradually returning to running.

• Strengthening the calves, hips and glutes.

• Improving mobility where needed.

• Addressing training errors.

• Reviewing footwear if appropriate.

The goal isn't simply to settle the pain but to address the reasons the injury developed in the first place.

Treatment for Stress Fractures

Management usually involves:

• Avoiding impact activities while the bone heals.

• Maintaining fitness with lower-impact exercise where appropriate.

• A carefully graded return to activity.

• Identifying factors that contributed to the injury, such as training load, nutrition or biomechanics.

Recovery often takes several weeks or longer, depending on the location and severity of the stress fracture.

Can They Be Prevented?

While no injury is completely avoidable, you can reduce your risk by:

• Increasing your training gradually.

• Including regular strength training.

• Allowing adequate recovery between sessions.

• Replacing worn-out running shoes when needed.

• Eating a balanced diet that supports bone and muscle health.

• Listening to early warning signs instead of pushing through persistent pain.

Small aches are common during training, but pain that continues to worsen shouldn't be ignored.

When Should You Seek Professional Advice?

It's a good idea to seek an assessment if:

• Your shin pain has lasted more than a week or two.

• The pain is getting worse rather than better.

• You can't pinpoint whether it's shin splints or something more serious.

• Walking has become painful.

• You have pain at rest or during the night.

• You want guidance on returning to running safely.

A thorough assessment can help determine the cause of your symptoms and ensure you're following the most appropriate rehabilitation programme.