Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
56 Cards in this Set
- Front
- Back
|
What is contained in the dorsal compartment of the foot? |
Intrinsic muscles: Extensor Digitorum Brevis Extensor Hallucis Brevis
Neurovascular structures of the dorsum of the foot |
|
|
What are the attachments of the extensor digitorum brevis? |
Origin: Superolateral calcaneus
Insertion: Base of the middle phalenges and to the long extensor tendons of digits 2-4 |
|
|
What are the actions of the extensor digitorum brevis? |
Extension of the MTPJs and IPJs of digits 2-4
(Aids the extensor digitorum longus) |
|
|
What is the innervation of the extensor digitorum brevis? |
Deep Fibular Nerve (L4-S1) |
|
|
What is the arterial supply of the extensor digitorum brevis? |
Dorsalis Pedis Artery |
|
|
What are the attachments of the extensor hallucis brevis? |
Origin: Superolateral calcaneus
Insertion: Dorsal surface of the base of the proximal phalanx of the great toe |
|
|
What are the actions of the extensor hallucis brevis? |
Extension of the MTPJ of the great toe
(Aids the extensor hallucis longus) |
|
|
What is the innervation of the extensor hallucis brevis? |
Deep Fibular Nerve (L5-S1) |
|
|
What is the arterial supply of the extensor hallucis brevis? |
Dorsalis Pedis Artery |
|
|
What is contained in the first plantar layer of the foot? |
Intrinsic Muscles: Flexor digitorum brevis Abductor hallucis Abductor digiti minimi |
|
|
What are the attachments of the flexor digitorum brevis? |
Origin: Medial tubercle of the calcaneus and plantar aponeurosis
Insertion: Base of middle phalanges of digits 2-5 |
|
|
What is the action of the flexor digitorum brevis? |
Flexion of digits 2-5 from the PIPJs |
|
|
What is the innervation of the flexor digitorum brevis? |
Medial Plantar Nerve (S1-S2) |
|
|
What is the arterial supply of the flexor digitorum brevis? |
Medial & Lateral Plantar Arteries |
|
|
What are the attachments of abductor hallucis? |
Origin: Medial calcaneal tuberosity
Insertion: Medial aspect of the base of the proximal phalanx of the great toe |
|
|
What are the actions of abductor hallucis? |
Abduction and flexion at the MTPJ of the great toe
Supports the longitudinal arch |
|
|
What is the innervation of abductor hallucis? |
Medial Plantar Nerve (S1-S2) |
|
|
What is the arterial supply of abductor hallucis? |
Medial Plantar Artery |
|
|
What are the attachments of abductor digiti minimi? |
Origin: Medial and lateral tubercles of the calcaneus
Insertion: Lateral aspect of the base of the proximal phalanx of the 5th digit |
|
|
What are the actions of abductor digiti minimi? |
Abduction and flexion at the MTPJ of the 5th digit |
|
|
What is the innervation of abductor digiti minimi? |
Lateral Plantar Nerve (S1-S3) |
|
|
What is the arterial supply of abductor digiti minimi? |
Lateral Plantar Artery |
|
|
What is contained in the second plantar layer of the foot? |
Intrinsic Muscles: Quadratus plantae Lumbricals
Extrinsic Muscle Tendons: Tendon of flexor hallucis longus Tendon of flexor digitorum longus |
|
|
What are the attachments of quadratus plantae? |
Origin: Medial and lateral plantar surface of the calcaneus
Insertion: Tendon of flexor digitorum longus |
|
|
What are the actions of quadratus plantae? |
Assists flexor digitorum longus in flexion of the lateral four digits |
|
|
What is the innervation of quadratus plantae? |
Lateral Plantar Nerve (S1-S3) |
|
|
What is the arterial supply of quadratus plantae? |
Lateral Plantar Artery |
|
|
What are the attachments of the lumbricals? |
Four lumbricals located medial to their respective tendon of the flexor digitorum longus
Origin: Tendons of flexor digitorum longus
Insertion: Medial aspect of the extensor hoods of the lateral four digits |
|
|
What are the actions of the lumbricals? |
Flexion at the MTPJs Extension at the IPJs |
|
|
What is the innervation of the lumbricals? |
Medial Lumbrical: Medial Plantar Nerve Lateral 3 Lumbricals: Lateral Plantar Nerve |
|
|
What is the arterial supply of the lumbricals? |
Medial & Lateral Plantar Arteries |
|
|
What is contained in the third plantar layer of the foot? |
Intrinsic Muscles: Flexor hallucis brevis Adductor hallucis Flexor digiti minimi brevis |
|
|
What are the attachments of flexor hallucis brevis? |
Origin: Plantar surfaces of the cuboid and lateral cuneiform
Insertion: Base of the proximal phalanx of the great toe |
|
|
What are the actions of flexor hallucis brevis? |
Flexion at the MTPJ of the great toe |
|
|
What is the innervation of flexor hallucis brevis? |
Medial Plantar Nerve |
|
|
What is the arterial supply of flexor hallucis brevis? |
Medial Plantar Artery |
|
|
What are the attachments of adductor hallucis? |
Origin: Oblique head: Bases metatarsals 2-4 Transverse head: Plantar ligaments of the metatarsophalangeal joints for toes 3-5
Insertion: Lateral aspect of the base of the proximal phalanx of the great toe |
|
|
What are the actions of adductor hallucis? |
Adducts the great toe Flexion MTPJ of the great toe
Supports the transverse arch of the foot |
|
|
What is the innervation of adductor hallucis? |
Deep branch of the lateral plantar nerve (S2-S3) |
|
|
What is the arterial supply of adductor hallucis? |
Plantar Arterial Arch |
|
|
What are the attachments of flexor digiti minimi brevis? |
Origin: Base of the fifth metatarsal
Insertion: Lateral aspect of the base of the proximal phalanx of the fifth digit |
|
|
What are the actions of flexor digiti minimi brevis? |
Flexion of the 5th digit at the MTPJ |
|
|
What is the innervation of flexor digiti minimi brevis? |
Lateral Plantar Nerve (S2-S3) |
|
|
What is the arterial supply of flexor digiti minimi brevis? |
Lateral Plantar Artery |
|
|
What is contained in the fourth plantar layer of the foot? |
Intrinsic Muscles: Plantar and dorsal interossei
Extrinsic Muscle Tendons: Tendon of fibularis longus Tendon of tibialis posterior |
|
|
What are the attachments of the plantar interossei? |
3 Planter Interossei
Origin: Medial side of the bases metatarsals 3-5
Insertion: Medial side of the proximal phalanges of digits 3-5 |
|
|
What are the actions of the plantar interossei? |
Adduction of digits 3-5 Flexion of the MTPJs of digits 3-5 |
|
|
What is the innervation of the plantar interossei? |
Deep Branch of the Lateral Plantar Nerve (S2-S3) |
|
|
What is the arterial supply of the plantar interossei? |
Plantar Metatarsal Arteries |
|
|
What are the attachments of the dorsal interossei? |
4 Dorsal Interossei, each with 2 heads
1st Origin: lateral 1st and medial 2nd metatarsals 1st Insertion: Medial base of proximal phalynx of the 2nd digit
2nd Origin: Lateral 2nd and medial 3rd metatarsals 2nd Insertion: Lateral base of proximal phalynx of the 2nd digit
3rd Origin: Lateral 3rd and medial 4th metatarsals 3rd Insertion: Lateral base of proximal phalynx of the 3rd digit
4th Origin: Lateral 4th and medial 5th metatarsal 4th Insertion: Lateral base of proximal phalynx of the 4th digit |
|
|
What are the actions of the dorsal interossei? |
Abduction of digits 2-4 Flexion at the MTPJs of digits 2-4 |
|
|
What is the innervation of the dorsal interossei? |
Deep Branch of the Lateral Plantar Nerve (S2-S3) |
|
|
What is the arterial supply of the dorsal interossei? |
Dorsal Metatarsal Arteries |
|
|
What bones compose the medial longitudinal arch of the foot and which structures assist with supporting the arch? |
Calcaneus Talus Navicular 3 Cuniforms 1st - 3rd Metatarsals
Pillars: Calcaneal tuberosity, Heads of metatarsals 1-3
Supporting structures: Bones Plantar Calcaneonavicular Ligament (Spring) -> strengthened by the deltoid ligament and tendon of tibialis posterior Plantar Apponeurosis Tendons of tibialis anterior and fibularis longus |
|
|
What bones compose the lateral longitudinal arch of the foot and which structures assist with supporting the arch? |
Calcaneus Cuboid 4th & 5th Metatarsals
Supporting structures: Bones Long Plantar Ligament Plantar Calcaneocuboid Ligament Extensor tendons Small muscles of the 5th digit
|
|
|
What bones compose the transverse arch of the foot and which structures assist with supporting the arch? |
3 Cuniforms Cuboid Base of Metatarsals 1-5
Supported by: Lnterosseous, plantar, and dorsal ligaments Short muscles of the first and fifth toes Tendon of fibularis longus |
