The knee, leg, ankle, and foot Flashcards
What is the small protrusion in the middle of the tibial plateau called?
Intercondylar eminence
What inserts into the tibial tuberosity?
Patellar tendon (through which the quadriceps act)
What protrusions in the ankle do the distal ends of the tibia and fibula form?
Tibia: medial malleolus
Fibula: lateral malleolus
What is the name of the ridge running obliquely down the posterior surface of the tibia?
Soleal line
Name all the tarsal bones.
Talus Calcaneus Cuboid Navicular Cuneiforms (1, 2 + 3)
What are the two main joints in the foot and where do they lie?
Transverse tarsal joint (between calcaneus + talus and navicular + cuboid) Tarsometatarsal joint (between the most distal tarsal bones + metatarsals)
How many phalanges does each of the digits have?
Big toe: 2
All other toes: 3
Where are sesamoid bones found in the foot and which tendon do these bones lie in?
On plantar surface of the foot, beneath the metatarsophalangeal joint of the big toe
It lies in the tendon of flexor hallucis brevis
Which tarsal bones have tuberosities?
Navicular + Cuboid
What are the three arches that are formed when the bones of the foot fit together?
Medial + lateral longitudinal arches
Transverse arches
Which bones make up the forefoot, midfoot and hindfoot?
Hindfoot: calcaneus + tallus
Midfoot: cuboid, navicular + cuneiforms
Forefoot: metatarsals + phalanges
Which muscles of the anterior compartment of the thigh act across the knee?
Tensor fasciae latae
Sartorius
Quadriceps
Which muscle in the medial compartment of the thigh acts across the knee?
Gracilis
Describe the arrangement of the three hamstrings.
Biceps femoris lies more laterally (its short head comes off linea aspera) + inserts into fibula
Semitendinosus + semimembranosus are more medial + insert into the tibia
What movement is the anterior compartment of the leg responsible for?
Dorsiflexion of the ankle (extensors, toes pointing up)
Which nerve supplies the anterior compartment of the leg?
Deep peroneal nerve
Which artery supplies the anterior compartment of the leg?
Anterior tibial artery
Which muscles are found in the anterior compartment of the leg?
Tibialis Anterior
Extensor Digitorum Longus
Extensor Hallucis Longus
Describe the structure and attachment of tibialis anterior.
Lateral surface of the head of the tibia + travels medially
Goes in front of the medial malleolus
Attaches to the medial cuneiform + 1st metatarsal
What are the names of the two extensor retinacula in the foot?
Superior extensor retinaculum
Inferior extensor retinaculum
Which muscles are in the lateral compartment of the leg?
Peroneus longus
Peroneus brevis
What movement is the lateral compartment responsible for?
Eversion of the foot
Contribute to dorsiflexion
Which nerve supplies the lateral compartment of the leg?
Superficial peroneal nerve
Which artery supplies the lateral compartment of the leg?
Peroneal artery
Describe the structure and attachments of the two muscles the lateral compartment of the leg.
Both attach to the shaft of the fibula + run along the lateral side of the leg, behind the lateral malleolus, then:
Brevis: attaches to base of 5th metatarsal
Longus: attaches to 1st metatarsal + medial cuneiform
Which muscles are in the posterior compartment of the leg?
Superficial: Gastrocnemius Soleus Plantaris Deep: Flexor digitorum longus Flexor hallucis longus Tibialis posterior Popliteus
What movement is the posterior compartment of the leg responsible for?
Plantarflexion of the ankle
Flexion of the digits
Which nerve innervates the muscles in the posterior compartment?
Tibial nerve
Which artery supplies the posterior compartment of the leg?
Posterior tibial artery
What are the proximal attachments of gastrocnemius?
It attaches to the medial + lateral condyles of the femur