Crus and Pes Flashcards
Soleus
O: Soleal line of tibia and superior fibula
I: Calcaneal tuberosity via tendo calcaneus
Ax: Plantarflex ankle
N: Tibial N
A: Post tibial A
**Prime mover for plantarflexing ankle
Plantaris
O: Inferior lateral supracondylar line of femur I: calcaneal tuberosity Ax: Flex knee and plantarflex ankle N: Tibial N A: Post tibial A
Popliteus
O: Lateral epicondyle of femur I: Popliteal line of tibia Ax: Flex, internally and externally rotate knee, retract lateral meniscus N: Tibial N A: Posterior tibial A
Gastrocnemius
O: Posterior medial and lateral condyles of femur
I: Calcaneal tuberosity via tendo calcaneus
Ax: Flex knee and plantarflex ankle
N: Tibial N
A: Post tibia A
**Prime mover for plantarflexing ankle
Flexor Digitorum Longus
O: Middle posterior tibia
I: Through medial malleolus sulcus to distal phalanges of digits II-V
Ax: Flex digits II-V, plantar flex ankle, invert pes
N: Tibial N
A: Posterior tibial A
**Prime mover for flexing digits II-V
Tibialis Posterior
O: Lateral to soleal line from lateral tibia to medial fibula
I: Through medial malleolus sulcus to plantar instep
Ax: Plantarflex ankle and invert pes
N: Tibial N
A: Posterior tibial A
**Prime mover for inverting pes
Flexor Hallucis Longus
O: Posterior fibular diaphysis
I: Through sustentaculm tali sulcus to distal phalanx of hallux
Ax: Flex hallux, plantarflex ankle and invert pes
N: Tibial N
A: Post tibial A
Tibialis Anterior
O: Anterior border, lateral tibia & interosseus membrane I: Bottom of instep Ax: Dorsiflex ankle and invert pes N: Deep fibular N A: Anterior tibial A **Prime mover for dorsiflexion
Extensor Hallucis Longus
O: Middle anterior fibula & interosseus membrane
I: Distal phalanx of hallux
Ax: Extend hallux, dorsiflex ankle and invert pes
N: Deep fibular N
A: Anterior tibial A
Extensor Digitorum Longus
O: Superior anterior fibular & interosseus membrane
I: Extensor expansion of digits II-V
Ax: Extend digits II-V, dorsiflex ankle and evert pes
N: Deep fibular N
A: Ant tibial A
**Prime mover for extending digits II-V
Fibularis Tertius
O: Inferior portion of extensor digitorum longus I: Tuberosity of Mt V Ax: Dorsiflex ankle and evert pes N: Deep fibular N A: Anterior fibular A
Fibularis Longus
O: Fibular head and superior lateral diaphysis
I: Through lateral malleolus sulcus and calcaneal sulcus across plantar region to the base of Mt I
Ax: Plantarflex ankle and evert pes
N: Superficial fibular N
A: Fibular A
Fibularis Brevis
O: Inferior lateral fibula diaphysis I: Through lateral malleolus sulcus and calcaneal sulcus to the tuberosity of Mt V Ax: Plantarflex and evert pes N: Superficial fibular N A: Fibular A
Extensor Digitorum Brevis
O: Anterior Calcaneus I: Middle phalanx of digits II-IV Ax: Digits II-IV tendons of extensor digitorum longus N: Deep fibular N A: Arcuate and dorsalis pedis A
Extensor Hallucis Brevis
O: Ant Calcaneus I: Proximal phalanx of hallux Ax: Extend hallux N: Deep fibular N A: Arcuate and dorsalis pedis A
ABductor Hallucis
O: Calcaneal tuberosity I: Proximal phalanx of Hallux Ax: ABducts and flexes hallux N: Medial plantar N A: Medial and lateral plantar A
Flexor Digitorum Brevis
O: Calcaneal tuberosity I: Middle phalanges of digits II-V Ax: Flexes digits II-V N: Medial plantar N A: Medial and lateral plantar A
ABductor Digiti Minimi of Pes
O: Calcaneal tuberosity I: Proximal phalanx of digit V Ax: ABd and flexes digit V N: Lateral plantar N A: Medial and lateral plantar A
Quadratus Plantae
O: Calcaneal tuberosity I: Tendons of flexsor digitorum longus Ax: Flexes digits II-V via flexor dig longus N: Lateral plantar N A: Med and lat plantar A
Lumbricals of Pes
O: Tendons of flex dig longus I: Extensor expansions of digits II-V Ax: Flex MtP jts, ext IP jts of digits II-V N: Med and lat plantar N A: Med and lat plantar A
Flexor Hallucis Brevis
O: Base of Mt I and Cuboid I: Proximal phalanx of hallux Ax: Flex hallux N: Med plantar N A: Med and lat plantar A
Adductor Hallucis Obliquus
O: Base of Mt II-IV I: Proximal phalanx of hallux Ax: Add and flex hallux N: Lat plantar N A: Med and lat plantar N
Adductor Hallucis Transversus
O: MTP jt capsules of digits II-V I: Proximal phalanx of hallux Ax: Add hallux N: Lat plantar N A: Med and lat plantar A
Flexor Digiti Minimi of Pes
O: Base of Mt V I: Proximal phalanx of digit V Ax: Flex digit V N: Lat plantar N A: Med and lat plantar A
Plantar Interossei
O: Diaphyses of Mt III-V I: Proximal phalanges of digit III-V Ax: Add digits III-V, flexes MTP jts III-V N: Lat plantar N A: Med and lat plantar A (3PAD)
Dorsal Interossei of Pes
O: Adjacent Mt diaphysis I: Proximal phalanges of digits II-IV Ax: ABd digits II-IV, flexes MTP jts II-IV N: Lat plantar N A: Med and lat plantar A (4DAB)
