Quantitative study of PIMT technique aiming its validation as physical therapy procedure

Abstract

Background: Valgus hindfoot is a very common postural deviation, and the associated foot pronation can be a triggering factor for diseases such as tarsal tunnel syndrome.

Research question: This work compares two techniques for hindfoot valgus correction: GPR (Global Postural Reeducation) and PIMT (Postural Integration by Manual Therapy).

Methods: Sixty young adult subjects from the Brazilian Army with unilateral hindfoot valgus were selected and divided into two groups of 30 subjects, one treated with GPR and the other treated with PIMT. Differences between normal and valgus hindfeet (plantar surface and body weight load) for each subject were measured and analysed, using a baropodometer with subjects in static standing position for 5s. Measurements were performed before and after each treatment session (4 weeks, once a week), and 4 weeks after the end of treatment.

Results: Data shows that both treatments were equally effective for improving symmetry in body weight load between feet and plantar surface. After 4 weeks from the end of treatment, both treatments were equally effective for body weight load symmetry, but plantar surface symmetry was better in PIMT treated subjects.

Significance: This study shows that PIMT technique can be validated as a physical therapy procedure, at least for valgus hindfoot.

Keywords: Balance; Foot biomechanics; Manual therapy; Mobilization; Posture; Validation.