Range of Motion: Ankle Inversion

range of motion Jun 28, 2023

An inclinometer is a device used to measure the angle of a joint. To test ankle inversion range of motion using an inclinometer, follow these steps:

  1. With their shoes and socks off, get your client to lie down in a supine position on a massage table.
  2. As this is a rotational test, the Measurz inclinometer will adopt its transverse plane feature. Thus, it is critical that the smart device is aligned correctly before proceeding with this protocol. 
  3. While performing this test, the practitioner should assist the client by holding their lower leg down on the table. Doing this will allow the tibia to remain in a fixed position and therefore the ankle joint can be truly isolated. 
  4. Once set, place the smart device in line with the second metatarsal, ensuring the Measurz inclinometer is set at 0 degrees. 
  5. Instruct the client to rotate their foot in toward their midline. Using the inclinometer, follow the client’s foot until they have achieved their maximal rotation.
  6. Hit the pause, and then the save button to record and view the results. NB: Aiming for a score of at least 30 degrees of ankle inversion.

The normal range of motion for ankle inversion can vary depending on a person's age, gender, and physical activity level. However, on average, the normal range of ankle inversion range of motion is around 20-30 degrees.



  1. Norkin, C. C., & White, D. J. (2016). Measurement of joint motion: A guide to goniometry (5th ed.). F.A. Davis Company.
  2. Magee, D. J. (2014). Orthopedic physical assessment (6th ed.). Saunders/Elsevier.
  3. Kisner, C., & Colby, L. A. (2017). Therapeutic exercise: Foundations and techniques (7th ed.). F.A. Davis Company.

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