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38 Cards in this Set
- Front
- Back
Where is the Pisiform?
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Base of hypothenar eminence on medial side.
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Wheree is Extensor Carpi Radialis Longus & Brevis?
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Attaches to lateral epicondyl of humerus, run to the base of metacarpals 2 & 3 on the dorsal surface.
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Where is the Extensor Carpi Ulnaris?
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Attaches to lateral epicondyle, crosses the wrist on its way to the base of the fifth metacarpal.
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Where is Flexor Digitorum Superficialis and what does it do?
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Flexes digits, runs btwn medial epicondyle of humerus and proximal anterior shaft of ulna and radius in intermediate phalanx of medial 4 digits via separate tendons.
Make fist, feel tendons medial to palmaris longus, lateral to flexor carpi ulnaris |
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Where is the Extensor Digitorum?
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Attaches at the lateral epicondyle of humerus. Runs to distal phalanx of medial four digits.
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Where is Extensor Indicis?
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Runs from distal shaft of ulna to distal phalanx of 2nd digit. Extends index finger.
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Where is Extensor Pollicis Longus & Brevis?
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Two tendons of snuff box, from the dorsal radius and the ulna of the forearm to the dorsal thumb.
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Reposition of the Thumb?
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Return from opposition...hand opens back up.
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Where is Extensor Digiti Minimi
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Small muscle lies slightly medial to extensor digitorum. Extends little finger
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What 3 muscles make up the Hypothenar Eminence?
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Abductor Digiti Minimi
Flexor Digiti Minimi Brevis Opponens Digiti Minimi |
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Where are the Interphalangeal Joints?
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Formed by the articulation of two phalanxes. Each digit has two (x thumb)
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Where is Abductor Pollicis Longus?
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Btwn dorsal radius and ulna in middle of forearm to base of thumb. Just off center from thenar eminance
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Where is Flexor Pollicis Longus?
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Deep muscle of forearm, runs from dorsal radius to distal phalanx of thumb
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What 4 muscles make up Thenar Eminence?
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Opponens Pollicis
Adbustor Pollicis Brevis Flexor Pollicis Brevis Adductor Pollicis |
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What 2 Anterior extrinsic muscles of the hand flex fingers?
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Flexor Digitorum Superficialis
Flexor Digitorum Profundus |
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Where does the arcitulation btwn the wrist and forearm occur?
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As the radius contacts the eight carpal bones of the wrist.
Proximal carpal row joins the wrist to the forearm Distal row joins the wrist to the fingers. |
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Where dos the radius articulate?
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The radius articulates w/the proximal carpal row, except for the pisiform bone.
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What makes up the Proximal Carpal Row?
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Moving from lateral to medial: scaphoid, lunate, triquetrum & pisiform
Triquetrum articulates w/radius |
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What makes up the Distal Carpal Row?
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Anteriorly, from lateral to medially:
Trapezium Trapezoid Capitate Hamate |
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Which bones make up the Phalanges & what do they articulate with?
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Phalanx
They articulate w/metacarpals. |
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Where is the Hamate?
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Distal and lateral to the pisiform. Has a protrusion
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Where is the Scaphoid?
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The lateral carpal of the proximal row in the anatomical snuff box.
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What type of joint is the wrist joint and what does it articulate with?
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Biaxial joint formed by the articulation of the radius and scaphoid, lunate and triquetrum.
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Where are the Carpometacarpal Joints?
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Distal carpal row articulates w/5 metacarpals, forming the carpometacarpal joint.
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Where are the Metacarpophalangeal Joints?
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Knuckles are found where the metacarpals meet the phalanges and represent biaxial joints (x thumb-uniaxial)
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What is Radial Deviation of the wrist?
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Abductionn at the wrist. A rotation away from the body..toward the lateral side.
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What is Ulnar deviation of the wrist?
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Adduction at the wrist. Movement toward the body in frontal plane (medially)
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What is Abduction of Digits? Adduction?
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Abduction: When digits are spread (3rd digit abducts no matter which way because any movement is a move away from the mid.
Adduction: Digits are closed |
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Abduction of the Thumb?
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Movement away from and anterior to the second digit
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Adduction of the thumb?
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Movement toward the second digit and posterior to the second digit
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Flexion of the Thumb?
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Movement across the palm
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Extension of the Thumb?
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Hitchhiking move...outward flex
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Opposition of the Thumb?
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Thumb closes on fingers...shadowboxing move!
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What do all the flexors of the wrist have in common?
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The have a common proximal attachment at the medial epicondyle of the humerus.
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Where is the Flexor Carpi Radialis?
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Attaches at medial epicondyle, courses down the anterior arm and crosses the wrist on the radial side. Distal attachment of at base of metacarpals 2 & 3.
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Where is the Palmaris Longus?
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Attaches at medial epicondyle, crosses wrist in sagittal plane, has a distal attachment at the palmar aponeurosis
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Where is the Flexor Carpi Ulnaris?
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Attaches at medial epicondyle, is medial to palmaris. Runs along the anterior ulna to cross the wrist and attach to the pisiform
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What is the common attachment for the Wrist Extensors?
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Lateral epicondylar ridge and epicondyle of humerus.
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