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Anatomy exam 6 > Foot Joints > Flashcards

Foot Joints Flashcards

1
Q

Medial longitudinal arch

A
  • Higher and more important than the lateral longitudinal arch
  • consists of calcaneus, talus, navicular, three cuneiforms and three medial metatarsals
  • arch is SUPPORTED by the spring (calcaneonavicular) ligament and the plantar aponeurosis
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2
Q

Lateral longitudinal arch

A
  • flatter than medial arch
  • during standing it rests on ground
  • consists of calcaneus, cuboid, and the lateral two metatarsals
  • arch is supported by long plantar ligament, short plantar ligament, and the plantar aponeurosis
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3
Q

Traverse arch

A

runs from side to side

- formed by three cuneiforms and bases of all metatarsals

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4
Q

subtaler joint (talocalcaneal)

A
  • PLANE type synovial joint
  • talus rests on the calcaneus
  • PERMITS INVERSION and EVERSION
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5
Q

Tarsometatarsal joints

A
  • PLANE type of synovial joint

- four anterior tarsal bones with the bases of the metatarsals

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6
Q

Intermetatarsal joints

A
  • PLANE type of synovial joint
  • Permits SLIGHT GLIDING movement
  • articulation between bases of the metatarsals
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7
Q

Metatarsal phalangeal (MP) joints

A
  • CONDYLOID type of synovial joints
  • PERMITS flexion, extension, abduction, adduction, and rotation
  • Articulation between the heads of the metatarsals and the bases of proximal phalanges
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8
Q

Interphalangeal (IP) joints

A
  • Hinge type of synovial joint

- PERMITS FLEXION and EXTENSION

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9
Q

OTHER TARSAL JOINTS

A
  • PLANE, GLIDING type synovial joints
  • PERMIT INVERSION and EVERSION of foot
  • between the small bones
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10
Q

Actions of the ankle joint

A
  • DORSIFLEXION (35 degrees) - stable when dorsiflexed

- PLANTAR FLEXION (55 degrees) = UNSTABLE WHEN PLANTAR FLEXED

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11
Q

ANKLE JOINT (Talocrural)

A

GINGLYMUS or hinge type of synovial joint

- Trochlea of talus, tibia, fibula

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12
Q

Ankle Sprain

A
  • Most frequently injured major joint
  • occur due to TORN or DAMAGED ligaments
  • usually INVERSION injury = causing damage to LATERAL LIGAMENT
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13
Q

Potts fracture

A
  • When foot forcefully EVERTED

- often results in fracture of the MEDIAL and LATERAL MALLEOLI and fibula

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14
Q

Articular capsule

A
  • surrounds ankle joint cavity
  • thin anteriorly and posteriorly
  • STRONG MEDIALLY and LATTERALLY where it is strengthened by DELTOID and LATERAL LIGAMENT
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15
Q

Deltoid ligament

A
  • located on the medial side of the ankle joint with 4 distinct bands
  • VERY STRONG TRIANGULAR BAND of LIGAMENTS
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16
Q

LATERAL LIGAMENT

A
  • three distinct bands
  • located on lateral side of ankle joint
  • WEAKER THAN THE DELTOID LIGAMENT

Anatomy exam 6 (6 decks)

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