Muscles Of The Lower Leg Flashcards
Origin, Insertion, Actions, and Innervation for the Main Muscles
Popliteus - Innervation
Tibial nerve
Popliteus - Origin
Lateral condyle of the femur
Popliteus - Insertion
Proximal, posterior aspect of the tibia
Popliteus - Actions
MEDIALLY ROTATE the flexed tibiofemoral joint
FLEX the tibiofemoral joint
Popliteus - Palpation key
Prone - with knee flexed, resist medial rotation of the knee
Tibialis Posterior - Innervation
Tibial nerve
Tibialis Posterior - origin
Proximal, posterior shafts of the tibia and fibula and interosseous membrane
Tibialis Posterior - Insertion
All 5 tarsal bones and bases of 2nd through 4th metatarsals
Tibialis Posterior - Actions
INVERT the subtalar joint
PLANTAR FLEX the talocrural joint
Tibialis Posterior - Palpation Notes
Prone - Resist plantarflexion and inversion of the foot
(Locate medial malleolus, slide posteriorly and proximally off the malleolus into the space between the tibial shaft and the calcaneal tendon)
Flexor Digitorum Longus - Innervation
Tibial nerve
Flexor Digitorum Longus - Origin
Middle, posterior surface of the tibia
Flexor Digitorum Longus - Insertion
Distal phalanges of 2nd through 5th toes
Flexor Digitorum Longus - Actions
FLEX the 2nd through 5th toes at the metatarsophalangeal and interphalangeal joints
Weak PLANTARFLEXION of talocrural joint
INVERT the subtalar joint
Flexor Hallucis Longus - Innervation
Tibial nerve
Flexor Hallucis Longus - Origin
Middle half of posterior fibula
Flexor Hallucis Longus - Insertion
Distal phalanx of the 1st toe
Flexor Hallucis Longus - Actions
FLEX the 1st toe at the metatarsophalangeal and interphalangeal joints
Weak PLANTARFLEXION of talocrural joint
INVERT the subtalar joint
Extensor Digitorum Longus - Innervation
Deep fibular nerve
Extensor Digitorum Longus - Origin
Lateral condyle of the tibia
Anterior shaft of fibula
Interosseous membrane
Extensor Digitorum Longus - Insertion
Middle & distal phalanges of 2nd through 5th toes
Extensor Digitorum Longus - Actions
EXTEND the 2nd through 5th toes at the metatarsophalangeal and interphalangeal joints
DORSIFLEX the talocrural joint
EVERT at the subtalar joint
Fibularis Brevis - Innervation
Superficial fibular nerve
Fibularis Brevis - Origin
Distal 2/3 of lateral fibula
Fibularis Brevis - Insertion
Tuberosity of 5th metatarsal
Fibularis Brevis - Actions
EVERT the subtalar joint
Assist to PLANTAR FLEX the talocrural joint
Plantaris - Innervation
Tibial nerve
Plantaris - Origin
Lateral supracondylar line of the femur
Plantaris - Insertion
Calcaneus via calcaneal tendon
Plantaris - Actions
Weak PLANTARFLEXION of the talocrural joint
Weak FLEXION of the tibiofemoral joint
Plantaris - Palpation notes
Prone - fall Medially off the head of the fibula into the popliteal space between gastrocnemius heads
Gastrocnemius - Innervation
Tibial nerve
Gastrocnemius - Origin
Condyles of the femur posterior surfaces
Gastrocnemius - Insertion
Calcaneus via calcaneal tendon
Gastrocnemius - Actions
FLEX the tibiofemoral joint
PLANTAR FLEX the talocrural joint
Soleus - Innervation
Tibial nerve
Soleus - origin
Soleal line
Proximal, posterior surface of the tibia
Posterior aspect of the head of the fibula
Soleus - insertion
Calcaneus via the calcaneal tendon
Soleus - actions
PLANTAR FLEX the talocrural joint
Fibularis Longus - Innervation
Superficial fibular nerve
Fibularis Longus - Origin
Head of the fibula
Proximal 2/3 of the lateral fibula
Fibularis Longus - Insertion
Base of the 1st metatarsal
Medial cuneiform
Fibularis Longus - Actions
EVERT the subtalar joint
Assist to PLANTAR FLEX the talocrural joint
Tibialis anterior - Innervation
Deep fibular nerve
Tibialis anterior - origin
Lateral condyle of tibia
Proximal lateral surface of tibia
Interosseous membrane
Tibialis anterior - insertion
Base of the 1st metatarsal
Medial cuneiform
Tibialis anterior - actions
INVERT the subtalar joint
DORSIFLEX the talocrural joint