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gross anatomy exam 3 > Antebrachium joints > Flashcards

Antebrachium joints Flashcards

1
Q

proximal radial ulnar joint

A

pivot joint

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2
Q

Middle Radioulnar joint

A

syndesmosis joint, IO

allows for supination and pronation

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3
Q

Distal Radioulnar joint

A

pivot joint

ulnar notch of radius—head of ulna

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4
Q

IO membrane

A

fibers run inferiorly and medially so no superior translation of radius

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5
Q

Function of IO membrane

A
  1. transfer force of radius to ulna
  2. increase surface area for muscle attachments
  3. useful for bearing weight but not carrying items
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6
Q

What important ligament associated with distal radial ulnar joint?

A

Triangular fibrocartilaginous complex (TFCC)

aka. triangular ligament

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7
Q

TFCC attachments

A

medial edge of ulnar notch—–lateral side of base ulna styloid process—ulnar head

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8
Q

Function of TFCC

A

ties end of bones together and keeps distal radialulnar joints separate from wrist joint

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gross anatomy exam 3 (26 decks)

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