A biceps tendon rupture is when the tendon attaching the biceps muscle tears, often causing pain and weakness. It can happen at the shoulder (proximal) or elbow (distal). Here's a quick breakdown: 🔍 Key Features Popeye Sign 💪🫣: The torn tendon causes the biceps muscle to bunch up, forming a visible bulge in the arm. Hook Test 🪝🩺: A physical exam where the examiner uses a finger to "hook" under the biceps tendon near the elbow. If it can't be hooked, a rupture is likely. 🦾 Function of the B