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A 31-year-old woman is referred to your office for further evaluation of a chronic left foot pain attributed to an "abnormal left leg tendon". Her physician forwards you a CD containing an axial MRI image seen in Figure A. Regarding the abnormal tendon, which of the following is true?
It originates from the tibia and fibula and is eccentrically active during terminal stance.
It originates from the tibia and fibula and is concentrically active during terminal stance.
It originates from the fibula only and is concentrically active during initial swing.
It originates from the fibula only and is eccentrically active during initial swing.
It originates from the tibia only and is concentrically active during terminal stance.
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During which period of gait does the tibialis anterior contract eccentrically?
Which phase of gait is affected most in a patient with quadriceps atrophy?
Which of the following descriptions of muscle activity during normal gait is correct?
Gastrocnemius-soleus contracts eccentrically during heel strike
Gastrocnemius-soleus contracts concentrically during heel strike
Gastrocnemius-soleus contracts concentrically during swing phase
Tibialis anterior contracts concentrically during toe-off
Tibialis anterior contracts eccentrically at heel strike
The primary antagonist of the anterior tibial tendon is innervated by which of the following nerves?
Superficial peroneal nerve
Deep peroneal nerve
Posterior tibial nerve