Overview
Shin splints (medial tibial stress syndrome) is a common exercise-related condition causing pain along the inner border of the shinbone (tibia). It is an overuse injury affecting the muscles, tendons, and bone tissue around the tibia. It is particularly common in runners and military recruits who have recently increased their training.
How common is it?
Shin splints are a common exercise-related problem, particularly after starting running or increasing activity.
Causes and risk factors
Repetitive mechanical stress on the tibia from running or jumping exceeds the bone and soft tissue's ability to remodel, causing inflammation and microdamage.
Common risk factors
- Sudden increase in running mileage, intensity, or frequency
- Running on hard or uneven surfaces
- Flat feet (overpronation) or high arches
- Worn-out or inappropriate footwear
- Female sex (higher risk due to lower bone density and biomechanical differences)
- Low bone density
- Poor running technique
- Muscle imbalance or weakness
Symptoms
- Pain along the inner lower two-thirds of the shin, worse with activity
- Tenderness on pressing along the inner shin border
- Mild swelling in some cases
- Pain at the start of exercise that may ease with warm-up, then return after exercise
- Pain persisting at rest or at night needs assessment for other causes, including a stress fracture.
When to see a doctor
Seek urgent assessment for severe shin pain or pain after an injury. Arrange assessment for persistent, focal or resting pain; a clinician will decide whether imaging is needed to check for stress fracture or another cause.
Diagnosis
Diagnosis usually follows examination and the activity history. If a stress fracture is suspected, imaging may be needed. An early X-ray can be normal despite a stress fracture; MRI may be used if concern persists.
Treatments
Relative rest and load reduction
Reduce or temporarily stop running. Cross-training with swimming or cycling maintains fitness without tibial loading. Gradual return to running only after pain-free during daily activities.
Ice and NSAIDs
A towel-wrapped cold pack may help pain. Seek advice first if sensation or circulation is reduced. Ask a pharmacist about suitable pain relief; NSAIDs may be unsafe with dehydration or kidney disease.
Running gait retraining and strengthening
Physiotherapy to correct overpronation, improve hip and ankle strength, and modify running technique reduces tibial loading. Custom orthotics for significant foot mechanics issues.
Self-care and lifestyle
- Build running back up gradually according to symptoms and recovery; a fixed weekly percentage does not guarantee protection from injury.
- Replace running shoes every 500 to 600 miles
- Vary running surfaces — avoid exclusively hard surfaces
- Include rest days in training schedules to allow bone remodelling
Prevention
Gradual training progression, appropriate footwear, addressing foot mechanics, and adequate calcium and vitamin D intake (particularly in women) reduce shin splint risk.
Sources for targeted updates
Updated: 24 October 2026. Targeted corrections to frequency, symptoms, urgent-care guidance, diagnosis, treatment, self-care, key facts. This update covers the named sections; a full review of the remaining guide is pending.