Joint Angels

The core mode reads angles from a webcam feed in real time. Shoulders, elbows, wrists, hips, knees, and ankles each get a value that updates as the person moves, so you can watch a joint through its full arc instead of freezing at one position. That makes it easy to catch the point where compensation starts.

You don't need a live subject to use it. Upload a recorded clip or a still photo and the same pose model runs on the file. Coaches use this for game footage, and clinics use it when a patient sends a video from home. The tradeoff is that you can't ask the person to adjust mid-movement.

A stick figure is drawn over the body with the measured angle printed next to each joint. The overlay is the part that makes the tool teachable: you can turn the screen toward a patient and show them what "forty degrees short of full extension" looks like. It also helps you spot a bad camera angle before you trust the number.

Pose models guess, and sometimes they guess badly. The slider sets how confident the model must be before it draws a joint, which lets you filter out flickering points caused by loose clothing or a hand crossing the body. Raising it cleans up the display, at the cost of losing joints in poor light.

A simple text area sits beside the video, so you can type observations while the measurement runs. It's meant for quick clinical notes, not structured records, and nothing is filed away for you. Copy the text into your own system before you close the tab.

All calculation happens on your device, and the site says no data is stored. Video from a patient never lands on a server, which removes a common objection to cloud rehab tools. It also means the tool works with whatever laptop you already own, with no dedicated hardware.