Flashcards in Workbook - The foot Deck (60)
What bones form the ankle joint? (3)
What are the tibia and fibula held together by distally?
What is the socket formed by the distal tibia and fibula called?
What are the bones of the foot?
-3 Cuneiforms (med)
-14 phalanges (2 on great toe, 3 on other toes)
What are the small bones/outgrowths on the distal end of metatarsal 1?
What type of joint is the ankle joint?
Synovial hinge joint.
What movements are possible at the ankle?
-Dorsiflexion, 45* (ant compartment)
-Plantarflexion, 20* (post compartment)
What ligaments strengthen the ankle posteriorly? (2)
-Posterior tibiofibular ligament
-Posterior talofibular ligament
What ligaments strengthen the ankle medially? (2)
-Deltoid ligament (post tinulotalar & tibulocalcaneal)
-Plantar calcaneonavicular ligament
What ligament strengthens the ankle medially/posteriorly?
What are the 2 intertarsal joints?
-Transverse talar joint
What is the subtarsal joint formed by?
Talus and calcaneus bones.
What movements are possible are the subtarsal joint?
-Inversion (tibialis anterior and posterior)
-Eversion (fibularis longus and brevis)
What is the transverse talar joint formed by?
-calcaneus and cuboid bones
-navicular and talus bones
How many arches are there in the foot?
-1 transverse, 2 longitudinal
What supports the longitudinal arches in the foot?
PASSIVE - plantar aponeurosis, short/long plantar ligaments, plantar calcaneal ligament
DYNAMIC - flexor hallucis longus, fibularis longus, intrinsic plantar muscles
What supports the transverse arch in the foot?
PASSIVE - wedge shaped cuneiform
DYNAMIC - fibularis longus, tibialis posterior
What is pes planus?
-due to lowered/flattened longitudinal arch
What usually causes pes planus?
Which bone is often displaced with pes planus?
What are the intrinsic extensor muscles on the dorsum of the foot? (2)
-Extensor halucis brevis
-Extensor digitorum brevis
What artery is located on the dorsum of the foot?
Dorsalis pedis artery.
Which nerves supply the dorsal aspect of the foot? (2)
-Superficial fibular nerve (L4-S1)
-Deep fibular nerve (L4, L5)
What is the motor innervation of the superficial fibular nerve?
-Lateral compartment of the leg
What is the sensory innervation of the superficial fibular nerve?
-Most of skin over dorsum of foot (apart from webbing between toes 1 and 2)
-Ant/lat distal 1/3 of leg
What is the motor innervation of the deep fibular nerve?
-Anterior compartment of the leg
-Intrinsic extensor muscles of the foot (EDB, EHB)
What is the sensory innervation of the deep fibular nerve?
Triangular region between 1st and 2nd toes.
Which nerves supply the skin of dorsum of the foot ? (4)
SUPERFICIAL FIBULAR - most of dorsum of foot
DEEP FIBULAR - region between 1st and 2nd toes
SURAL - lateral leg/foot/little toe, lateral malleolus
SAPHENOUS - ant/med leg, medial malleolus
Where are the majority of the intrinsic muscles of the foot located?
In the plantar aspect.
-sole of foot