This one comes with a moment the runner can replay clearly. A planted foot. A twist. A pop — felt more than heard. The knee swells overnight, settles with rest, then swells again the moment running resumes. Now it clicks. Sometimes it catches. Occasionally, it gives way just enough to raise doubt.

They’ll call it a sprain. They’ll ice it, rest it, and wait. But a knee that keeps swelling, clicking, and refusing to fully trust itself isn’t asking for more time. It’s asking for a proper diagnosis.

In this episode of The Foot Detective, we open the file on the Medial Meniscus Injury — the cartilage structure that quietly stabilises the knee until a twist, a load, or time itself exposes its limits. We follow the clues through joint line pain, recurrent swelling, mechanical symptoms, and the tell-tale hist ...