DR6 The Knee and Leg

Which of the following bony features of the knee can improve stability when standing extended?

Femoral condyles (correct)

Intercondylar fossa

Tibial tuberosity

Tibial plateau

What is the significance of the medial rotation of the femur?

It contributes to the locking mechanism of the knee.

It tightens the ligaments surrounding the knee.

It improves knee stability while standing.

All of the above. (correct)

Which muscle prevents lateral tracking of the patella during locomotion?

Vastus lateralis

Vastus medialis (correct)

Rectus femoris

Vastus intermedius

What is the origin of the quadriceps tendon?

Femur Signup and view all the answers

Which bone is not part of the knee anatomy?

Fibula Signup and view all the answers

What is the purpose of examining the attachments of the muscles using the skeleton?

To learn about the origin of the muscles Signup and view all the answers

Which ligament is attached to the medial meniscus within the knee joint?

Medial collateral ligament Signup and view all the answers

What is the function of the popliteus muscle?

Laterally rotate the femur on the tibia Signup and view all the answers

What would be the consequence of a tear to the fibular collateral ligament?

The leg would medially deviate, leading to a varus deformity Signup and view all the answers

What is the function of the anterior cruciate ligament?

Resist excessive forward glide of the tibia on the femur Signup and view all the answers

What is the clinical relevance of the attachment between the medial meniscus and the medial collateral ligament?

A blow to the medial side of the leg can rupture the medial meniscus Signup and view all the answers

Which movement occurs at the subtalar joint?

Inversion and eversion Signup and view all the answers

Which artery continues into the dorsum of the foot as the dorsalis pedis artery?

Anterior tibial artery Signup and view all the answers

Why is the dorsalis pedis artery an important pulse point?

It is easily palpable Signup and view all the answers

Which area of skin does the superficial fibular nerve supply?

The front of the ankle and the dorsum of the foot Signup and view all the answers

The tendons of which muscles form the superior border of the popliteal fossa?

Biceps femoris and semitendinosus Signup and view all the answers

What movements does the gastrocnemius muscle perform?

Flexion of the knee joint and plantarflexion of the foot Signup and view all the answers

Why is the plantaris muscle frequently used for tendon grafting?

It has a long thin tendon Signup and view all the answers

Which joint allows pronation and supination of the foot?

Articulation between the calcaneus and talus Signup and view all the answers

Which muscles are part of the anterior compartment of the leg?

Tibialis anterior, extensor digitorum longus, extensor hallucis longus Signup and view all the answers

What is the function of the extensor retinaculum?

To keep the tendons of the anterior leg muscles in place on the front of the ankle and prevent bowstringing Signup and view all the answers

What movements does the fibularis longus and brevis perform?

Eversion of the foot at the subtalar joint Signup and view all the answers

How would an injury to the common fibular nerve affect motor function?

The patient would be unable to dorsiflex or evert their foot Signup and view all the answers

Which area of skin does the deep fibular nerve supply?

The space between the great and second toe (first web space) Signup and view all the answers

Which muscle is responsible for plantarflexion of the talocrural joint and inversion of the subtalar joint with tibialis anterior?

Tibialis Posterior Signup and view all the answers

What are the contents of the tarsal tunnel, from anterior to posterior?

Tibialis Posterior tendon, Flexor Digitorum Longus tendon, Posterior Tibial artery and vein, Tibial nerve, Flexor Hallucis Longus tendon Signup and view all the answers

What would be the consequence of compression of the tibial nerve within the tarsal tunnel?

Pain (burning) or altered sensation on the sole of the foot Signup and view all the answers