Shin Splints (MTSS): How to Tell the Difference Between DOMS and a Stress Fracture

Medial tibial stress syndrome (MTSS) — the clinical term for shin splints — produces pain along the inner edge of the shinbone (tibia), typically developing during runs and easing after stopping. It is the most common overuse injury in runners beginning training or returning from extended breaks, and its spectrum of severity ranges from manageable soft-tissue overload at the milder end to tibial stress fracture at the most serious — a distinction that requires clinical assessment and, if stress fracture is suspected, imaging.

MTSS in its typical presentation involves diffuse tenderness spread over a 5cm or greater length of the tibia, worsening during runs and easing with rest. This pattern reflects periosteal inflammation — irritation of the bone's outer membrane — and responds to load management and shin-strengthening work. The concerning presentation is focal, point-tender pain at a single specific spot on the tibia that worsens with impact and may produce pain at rest. This pattern warrants immediate running reduction and medical assessment, as it may indicate a stress fracture that requires complete rest and, in some cases, immobilisation.

The hop test provides a rough clinical screen: hop 10 times on the affected leg. If this reproduces or significantly worsens focal tibial pain, stop running and seek assessment. A positive hop test in the context of point tenderness is a stress fracture until imaging says otherwise.

For typical MTSS without stress fracture concerns, the treatment protocol addresses both immediate symptoms and underlying causes. Immediate: reduce running volume by 40-50%, eliminate hard surface running temporarily, apply ice for 15 minutes post-run. Causation: progressive shin strengthening — toe raises (3 sets of 20, daily), heel walks (30 seconds each, daily), and tibialis anterior strengthening against light resistance.