Excerpt 3 of 8 · Knee OA

Knee OA in Runners:
Stop Reducing People to an Image

"As much as the orthopedic community likes to treat the knee as this fragile hinge joint, nothing is further from the case. The knee is built for load."

That line captures a belief I hold strongly — and one I think our profession needs to hear more often.

When a runner walks in after being told they're "bone on bone," they've usually already been handed a narrative that running is the problem and stopping is the solution. But the story is rarely that simple.

OA is a clinical diagnosis. You can use imaging to support it, but it does not define it. And when we reduce a complex human being to a single image and a scary label, we set them up for fear, avoidance, and a retreat from the very loading that was keeping them healthy.

In this clip from the new Knee OA module inside Clinical Running Essentials, I walk through:

  • Why OA is a clinical diagnosis — and why imaging is optional
  • The diagnostic criteria that actually matter: load-related joint pain, morning stiffness, functional limitations, age, and risk profile
  • What the Allanore study tells us about OA prevalence in sedentary individuals vs. recreational vs. competitive runners — including the nuance that often gets ignored
  • Why the knee is designed for load sharing — and the snowshoe analogy for how contact area increases with greater compressive force
  • Ross Miller's work on cumulative load: per-unit-distance load for walking vs. running is not significantly different
  • The concept of "cruel optimism" — taking a big, multifaceted problem and offering a simple, singular solution that sounds hopeful but fails most people
  • Why 20% of knee replacement patients go on to have persistent pain — and what that tells us about reductionist approaches
This excerpt is from

Clinical Running Essentials

Taught by Chris Johnson, PT

Confidently treat runners with bone stress injuries, lower limb tendinopathy, and movement dysfunction using proven strategies for assessment, rehab, and performance.

Learn more$795 · Lifetime access
Clinical Running Essentials course shown on a laptop and a phone

“Chris' course gives a lifetime of pearls and clinical insight into what is commonly and uncommonly seen in runners. The course takes a whole-person perspective into things to watch out for as well as approaches to encouraging and coaching people through injury and return to run.”

David O. PT,DPT,OCS

“In depth review of running related injuries with immediate clinical application. Would highly recommend for any clinicians working with runners in any capacity.”