13. Posterior Leg (No OIAN) Flashcards
What are the terminal branches of the posterior tibial artery?
Medial and Lateral plantar arteries
What bone is the origin of the flexor hallucis longus?
The fibula!
(despite attaching on the tibial side at the great toe, it originates on the fibula)
What separates the anterior and lateral compartments of the leg?
The anterior septum
What is the action of the popliteus muscle?
Laterally rotates the femur on a planted tibia to unlock the knee
What bone serves as the origin for the flexor digitorum longus?
Tibia
What is the probable function of the plantaris muscle?
Proprioception
Where are Tom Dick AN Harry located?
What structures are they?
Just behind the medial malleolus
Tibialis posterior
flexor Digitorum longus
posterior tibial Artery
tibial Nerve
flexor Hallucis longus
(anterior to posterior)
What rare small bone can fracture during total knee replacement, and where does it reside?
The fabella
In the lateral head of the gastrocnemius
What four muscles of the posterior leg act as dynamic support to the arch of the foot?
Tibialis anterior
Tibialis posterior
Fibularis longus
Flexor hallucis longus
In the posterior compartment, what muscle should you look under in order to find the fibular artery?
The flexor hallucis longus
Why might you want to palpate the tibial pulse?
To check for occlusive peripheral arterial disease
What tendon occupies the groove on the bottom of the sustentaculum tali of the calcaneus?
Tendon of the Flexor Hallucis Longus
What is the best method to palpate the tibial pulse?
Place your fingers on the posterior surface of the medial malleolus and instruct the patient to invert their foot.
(Inverting the foot relaxes the flexor retinaculum)
What two muscles of the posterior leg did Dr. Wright say are “especially useful” for maintaining the arches of the foot?
Tibialis posterior
Flexor hallucis longus
What muscles are involved in inversion of the foot?
Tibialis anterior and posterior
What separates the lateral and posterior compartments of the leg?
The posterior septum
In the posterior compartment of the leg, what muscle should you look deep to in order to find the tibial nerve?
The soleus
What two bones does the spring ligament run between?
Calcaneus
Navicular
(The other name is the Plantar Calcaneonavicular Ligament)
How does the fibular artery terminate?
Runs through the interosseous membrane and anastomoses with the anterior lateral malleolar artery
What separates the superficial and posterior deep compartments of the leg?
The transverse septum
What two arteries are located in the posterior compartment of the leg?
Which one primarily provides blood supply to the posterior compartment of the leg?
Posterior tibial artery and fibular artery
Posterior tibial artery
What small muscle has a long tendon which can be used in reconstructive surgery of the hand?
Plantaris
