Proposals for talonavicular joint assessment using ultrasound imaging and its reliability and validity.

[Purpose] We aimed to develop a noninvasive specific ultrasonographic assessment of the talonavicular joint during loading to facilitate the analysis of treatment of flatfoot. [Participants and Methods] Sixty healthy participants underwent ultrasound imaging of the talonavicular joint while sitting and standing. The talonavicular angle was defined as the intersection of the line connecting the navicular and talar heads and the line connecting the talar head and sustentaculum tali.

Effects of short foot exercises with ultrasound bio-feedback on motor learning and foot alignment: A double blinded randomized control trial.

Background: Short foot exercises (SFE) take a long time to master and require a feedback tool to improve motor learning.

Objective: This study aimed to investigate the effect of bio-feedback of talonavicular joint movements in learning SFE with ultrasound (US) imaging.

Methods: This study included thirty-one healthy volunteers and was designed as a double-blind randomized control trial.

Investigation of the relationship between the thickness of the plantar calcaneonavicular ligament and plantar fascia in patients with plantar fasciitis.

Background: Although patients with plantar fasciitis show spring ligament laxity, the thickness of the spring ligament in patients with plantar fasciitis remains unclear. This study aimed to elucidate the morphological characteristics of the spring ligament in patients with plantar fasciitis based on an ultrasound imaging system (US).

Methods: Thirty feet of 30 patients (painful group) diagnosed with plantar fasciitis at our hospital and thirty feet of 30 healthy volunteers (healthy group) without plantar pain were investigated.