This is a single-file, professional-grade solution built with pure HTML5, Tailwind CSS, and Vanilla JavaScript. It uses interactive SVG geometry to visualize the biomechanical relationship in real-time. ```html Free Pilates Reformer Footbar Angle & Knee Joint Stress Calculator

Pilates Reformer Footbar Angle & Knee Joint Stress Calculator

Analyze biomechanical stress based on reformer positioning and limb geometry.

Parameters

175 cm
Setting 2 (Medium)
30%

Calculated Knee Angle

120°

Stress Assessment

OPTIMAL