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In the single-stance phase of gait, gravity acting on the center of mass (CoM) causes a disequilibrium torque, which generates propulsive force. Triceps surae activity resists gravity by restraining forward tibial rotation thereby tuning CoM momentum. We hypothesized that time and amplitude modulation of triceps surae activity determines the kinematics… (More)
Abdominal migration of intrauterine devices is very rare. However, during the puerperium when the uterus is small and the uterine wall thin, the risk of perforation increases. A device removed by coelioscopy is described.