Footdrop, foot rotation, and plantarflexor failure in Charcot-Marie-Tooth disease.
Indeed, low foot rotation enforces a vertical posture and secures the balance of the humanoid robot.
It is shown that for fast motions a foot rotation sub-phase is useful to reduce the criteria cost.
In the optimization process, under-actuated phase (foot rotation phase), fully-actuated phase (flat foot phase) and over-actuated phase (double support phase) are considered.
We propose a simple control architecture based on the use of the FRI (Foot Rotation Indicator) point and the support polygon.
Gait retraining reduced the first peak KAM by 20% (p < 0.01) post-training as a result of a 7° decrease in foot progression angle (i.e., increased internal foot rotation), compared to baseline (p < 0.01).
Our shape optimization framework is able to minimize the impact of the foot with the ground during the heel-strike phase and to limit foot rotation in case of perturbations.
The objective of this study was to evaluate toe-in gait (decreased foot progression angle from baseline through internal foot rotation) as a means to reduce the first peak of the knee adduction moment in subjects with medial compartment knee osteoarthritis.
However, we found that the foot cannot be very accurately represented by a rollover model just after heel strike (HS) and just before toe off (TO), probably due to shear deformation of foot plantar tissues (ankle motion can occur without any foot rotation).
Objective: To determine the incidence of pelvic unleveling, foot rotation, and supine leg length alignment asymmetry in a nonclinical population and to examine the validity (sensitivity, specificity, positive and negative predictive values) of these visual tests and their relationship to self-reported back pain.
Furthermore, Ishida et al. instructed subjects to land with maximal internal and external foot position allowed by comfort (range: -2.7 to 20.3°), whereas we asked subjects to land at pre-templated positions at 30° foot rotation from neutral, the magnitude considered "high-risk" in the Landing Error Scoring System (LESS) (Padua et al. 2009).
