Table 1 Foot scanning protocol

1

One foot is placed in a semi-weight bearing position with the other foot on the floor for stability.

2

Foot posture is adjusted to obtain a neutral talonavicular position determined by manual palpation, with the supra- and infra-malleolar curves of equivalent curvature [24].

3

The long axis of the foot is aligned in the sagittal plane with the long axis of the scanner plate.

4

The hip, knee and ankle joints are aligned in the sagittal plane.

5

The medial forefoot is loaded to contact the scanning plate if possible, to correct for soft tissue forefoot varus alignment. In the presence of a rigid forefoot varus deformity, the forefoot will be medially loaded until firm resistance is met, taking care to not negatively affect rearfoot posture.

6

Tibialis anterior activation will be monitored visually to ensure minimal active forefoot distortion.