Ep 381: Tibial Bone Stress Masterclass Part 1 (Shin Pain, Shin Splints or Stress Fracture?)

In episode 381 of The Physical Performance Show, host Brad Beer — sports and exercise physiotherapist — sits down with Pogo physiotherapist Tim Studley for the first instalment of a two-part mini-series on shin pain and tibial bone stress injuries, following on from their earlier three-part bone stress injury series.

This episode is essential listening for runners, coaches, and clinicians alike, unpacking how to tell the difference between medial tibial stress syndrome (MTSS/shin splints) and a true tibial bone stress injury — two conditions that can feel identical but require completely different management. Brad and Tim walk through the physiology of bone loading, the palpation tests that separate a "safe to keep running" diagnosis from one requiring an MRI, and the loading tests used to stress-test the tibia safely in clinic.

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Listen in as we delve into the following:

The prevalence of tibial bone stress injuries and why the shin is the most common bone stress site in runners Why bone stress injuries occur: workload errors, loading frequency vs. magnitude, and individualised risk factors The continuum from "happy bone" to stress reaction to frank stress fracture Why pain magnitude doesn't reliably predict injury severity The heterogeneity of bone innervation and why the periosteum is key to understanding pain Differentiating MTSS from tibial bone stress injury — and why the management is entirely different The 10cm palpation rule: a clinical prediction rule for when to suspect bone vs. soft tissue Why the anterior (front) shin is a higher-risk, non-union-prone injury site The loading-test ladder: double leg calf raise → single leg calf raise → single leg hop → side-to-side hop → forward hop The role of muscle-bone synergy: how calf strength and girth influence tibial bone stress risk Recovery timelines by injury grade, and why MRI matters for prognosis and athlete buy-in A real case study: a triathlete's navicular injury, deconditioning, and return to tibial bone stress injuries Quotes

"You can go from hero to zero really quickly with bone."

"Higher levels of pain don't necessarily mean a worse injury."

"Muscle loads bone."

Timeline