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.

Show Sponsor:

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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

00:00 – Introduction & sponsor: Pillar Performance
02:15 – Introduction to Tim and Brad's conversation
02:27 – Prevalence of tibial bone stress injuries
03:56 – Why bone stress injuries occur: workload and biomechanics
05:22 – Symptom patterns: bone stress injury vs. other shin pain
07:42 – Heterogeneity of bone innervation and pain variability
10:10 – Why pain severity doesn't predict injury severity
11:07 – MTSS vs. bone stress injury: two schools of thought
12:06 – Brad's clinical experience and personal injury history
13:59 – Cardinal signs and symptom progression in MTSS
15:23 – The three-legged stool: history, physical exam, imaging
16:19 – The 10cm palpation rule explained
19:43 – Applying the rule in practice
20:42 – Anterior shin pain: a higher-risk presentation
21:39 – Loading tests: from calf raises to forward hopping
24:07 – Individualising the loading-test progression
26:03 – Does the 10cm rule apply anteriorly?
26:55 – History as the biggest predictor of reinjury
27:53 – MRI, prognosis, and grading via the Fredericksons scale
29:15 – Reading hesitancy and movement quality in loading tests
31:10 – Why bone stress injuries aren't purely about vertical impact
33:03 – Calf girth and bone stress risk correlation
34:56 – Case study: a triathlete's navicular injury and recovery
35:58 – Episode close & sponsor mentions

THE TEAM:

Join The Physical Performance Show LEARNINGS membership through weekly podcasts here: https://www.patreon.com/TPPShow

Our goal is to get you back to your Physical Best. Find out more about Telehealth Consultations and book online at pogophysio.com.au.

Your Hosts:
🏃 Brad Beer - Instagram & X @Bradbeer and YouTube @PogophysioAu
🏃‍♂️‍➡️ Timothy Studley - Instagram @timothy_physio

The Physical Performance Show can be found at:
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