JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Tendon #a is harped, and hence violates the minimum allowable radius (b) A harped tendon has (vertically) straight segments. There is thus a zero radius at the profile point(s). To avoid the harped tendon warning Choose Criteria > Materials. Create a new PT system (possibly called "Harped"). Set the minimum radius for the new PT system to zero. Use the new system for the harped tendons. Parent topic: Tendons