Lower Limb 3 Flashcards
What holds together the tibia and fibula?
Interosseous membrane - provides additional stability to the skeletal bones
What type of joint is the superior tibio-fibular joint?
Synovial plane joint
What type of joint is the inferior tibio-fibular joint?
Syndesmosis - fibrous joint
What are the 3 compartments of the leg?
Anterior, posterior and lateral
What is the bony prominence that is 3-4cm below knee joint?
Tibial tuberosity
Which tendon attaches to the superior aspect of the tibial tuberosity?
Patellar tendon
Which bone makes up the medial malleolus?
Tibia
Which bone makes up the lateral mallelous?
Fibula
What is the movement of the ankle in eversion and inversion?
Eversion - ankle laterally
Inversion - ankle medially
What are the 4 muscles of the anterior compartment of the leg?
Tibialis anterior
Extensor digitorium longus
Extensor hallicus longus
Fibularis tertius
What is the main actions of the anterior compartment of the leg?
Dorsiflexion of ankle joint and extensors of the toes
What is another word for fibular when describing fibular muscles and nerves?
Peroneal
What is 6?
Tibialis anterior
What is 8?
Extensor digitorium longus
What is 12?
Extensor hallicus longus
What are the 2 divisions of the sciatic nerve?
Tibial nerve and common fibular nerve
What are the 2 divisions of the popliteal artery as it enters the leg?
Anterior tibial artery and tibio-peroneal trunk
What does the common fibular nerve further divide into?
Superficial fibular and deep fibular nerves
Which branch of common fibular nerve innervates the anterior compartment of the thigh?
Deep fibular nerve
What 2 muscles are in the lateral compartment of the leg?
Fibular longus and fibular brevis
What is the function of the muscles in the lateral compartment of the leg?
Evert the foot and weakly plantarflex the ankle joint
What nerve supplies the lateral compartment of the leg?
Superficial fibular nerve
How does foot drop occur?
Deep fibular nerve is damaged which supplies anterior compartment muscles of the leg
What is the course of the lesser saphenous vein?
Ascends on the posterior aspect of the leg and drains into the popliteal vein
What is the course of the greater saphenous vein?
Ascends on medial aspect of the leg + thigh and drains into the femoral vein
Where is the dorsalis pedis artery palpated?
Between 1st and 2nd metatarsal bones
Where is the posterior tibial pulse palpated?
Behind the medial malleolus
What type of joint is the ankle joint?
Synovial hinge joint
What makes the ankle a mortise joint?
Bones at the superior aspect of the joint provide a socket in which the talus fits and can fit into a move
What are the articular surfaces of the ankle?
Distal end of the tibia and fibular with superior part of the talus bone
When is the malleolar grip the strongest?
During dorsiflexion movement of the ankle joint
What is 1?
Tibionavicular ligament
What is 2?
Tibiocalcaneal ligament
What is 3?
Posterior talofibular ligament
What is 4?
Anterior tibiofibular
What is 5?
Calcaneofibular ligament
What is 6?
Anterior talofibular
Which ligament of the ankle joint is the weakest?
Anterior talofibular ligament
Which ligament of the ankle is called the deltoid ligament?
Medial ligament of the ankle
What muscles are involved in dorsiflexion of the ankle?
Anterior compartment of the leg - tibialis anterior, extensor hallicus longus and extensor digitorium longus
What muscles are involved in plantarflexion of the ankle?
Posterior compartment of the leg - gastrocnemius, soleus, plantaris and posterior tibialis
