Eversion

Eversion: A frontal plane movement of the ankle in which the sole of the foot rotates outward, away from the body's midline.

• Opposing Joint Action: Inversion
• Plane of Motion: Frontal
• Direction Bias: Facing outward
• Note: Joint actions may be referred to as "osteokinematic motions" or "osteokinematic joint actions" to differentiate them from "arthrokinematic motions " (e.g., spin, glide, roll, compression, and distraction).

For more (including a video lecture), check out:

• Lesson 16: Ankle Joint Actions and Muscles

Joints that Perform Eversion (and Sample Exercises/Assessments):

1. Ankle joint (Talocrural joint) : Eversion is a motion that involves rotation around an anterior-to-posterior axis, in which the sole faces outward. This action may be observed during pes planus (excessive pronation) during gate, the sign "Feet Flatten " during the Overhead Squat Assessment , or insufficient medial longitudinal arch during the navicular drop test .