Purpose:
To determine whether a pes planus is functional or structural
Procedure:
- Therapist observes (and compares) the orientation of the patient’s medial longitudinal arch while doing each of the following:
- Patient stands straight with both heels and toes on the ground
- Patient stands with just the toes on the ground
- Patient sits on the table
Positive Sign:
- Functional Pes Planus = if medial longitudinal arch is restored when the patient is either standing on the toes or seated = due to muscle or ligament weakness
- Structural Pes Planus = if medial longitudinal arch remains flat when the patient is standing on toes and when seated.
Bryson Ingram R.M.T. 