Biomechanics of the Ankle and Foot

Which of the following motions is NOT associated with foot supination?

• Ankle Flexion

• Tibial external rotation

• Inversion

• Abduction

A rigid foot is characterized by foot ____.

• pronation

• pes planus

• Both

• Neither

These are invertor muscles of the ankle and foot, except for ___.

• FHL

• Tibialis posterior

• FDL

• Peroneus longus

The loose-packed position of the the ankle joint is characterized by all of the following, except

• It is the position where the joint space is at its widest.

• The ligaments, capsules and other periarticular structures are lax.

• Both

• Neither

During ankle dorsiflexion, the talus glides ____ while it rolls ____.

• anteriorly; anteriorly

• anteriorly; posteriorly

• posteriorly; anteriorly

• posteriorly; posteriorly

Ankle inversion and eversion occurs in ____ axis.

• vertical

• transverse

• coronal

• longitudinal

This muscle is the tonic muscle that eccentrically control dorsiflexion of the ankle while standing for longer period of time.

• medial head of gastrocnemius

• lateral head of gastrocnemius

• plantaris

• soleus

A 35-year old patient consulted you for a flatfoot. Which of the following is TRUE of this condition?

• The medial longitudinal arch is elevated.

• The rearfoot is observed in a valgus position.

• The tibialis posterior muscle is tight.

• You will notice the footwear is severely worn out in the lateral sole.

Luke is hiking in Rocky Mountains, and while navigating an unlevel terrain, he rolled his ankle inwards and heard a 'pop' in his right ankle. He noticed swelling and mild bruising with intense pain of 7/10. Which ligament is likely torn?

• Anterior cruciate

• Tibionavicular

• Anterior tibiotalar ligament

• Anterior talofibular

Which nerve is involved in tarsal tunnel syndrome?

• medial plantar

• lateral plantar

• tibial

• common peroneal