Hand

Question 1

Scaphoid

Answer 1

Shaped like a boat, with a major concave surface for the head of the capitate and major convex surface ta articulates with the distal radius

Question 2

Scaphoid Tubercle

Answer 2

a blunt, nonarticular projection adjacent to the hollowed capitate facet

Question 3

Siding: positional scaphoid

Answer 3

hold the concave facet toward you and the tubercle up

the tubercle leans toward the side from which the bone comes

Question 4

Lunate

Answer 4

shaped in the form of a crescent moon
deeply concave surface articulates with the capitate
large broad articulation opposite articulates with the radius

Question 5

Siding: positional lunate

Answer 5

place the flat side on the table and the most concave facet toward you
the remaining facet rises up and toward the side from which the bone comes

Question 6

Triquetral

Answer 6

third bone from the thumb side in the proximal carpal row
has three main articular surfaces
its pisiform articulation is a single circular isolated and elevated facet

Question 7

Siding: positional triquetral

Answer 7

hold the common edge between the two largest facets toward you and vertically
when the third facet (for the pisiform) is up this facet points toward the side from which the bone comes

Question 8

Pisiform

Answer 8

pea-shaped with one side flattened by the triquetral articular facet
smallest of the carpals

Question 9

Siding: positional pisiform

Answer 9

hold the facet toward you and turn the bone until the bulk of the non-articular surface that is visible in this view is up
the groove and the bulk of this is visible surface is displaced from the side from which the bone comes

Question 10

Trapezium

Answer 10

irregularly sided bone of medium size
distinguished by its largest facet, a saddle shaped articular surface for the base of MC 1 (thumb)
long, narrow raised tubercle (crest)

Question 11

Siding: positional trapezium

Answer 11

place the bone on a flat surface with the tubercle on top and away from you and the concave facets on either side
the groove adjacent to the tubercle is on the side from which the bone comes

Question 12

Trapezoid

Answer 12

boot-shaped

smallest carpal bone in the distal row

Question 13

Siding: positional trapezoid

Answer 13

place the “sole” of the boot on the table with the narrow v-shaped space between the articular facets toward you
the toe of the boot then points towards the side from which the bone comes

Question 14

Capitate

Answer 14

large carpal bone
distal end squared-off while the proximal end is rounded
the head is the rounded part of the bone
the base is the squared-off end.

Question 15

Siding: positional capitate

Answer 15

when the head is up and the base rests on the table, place the long narrow articulation that runs up one side of the bone (from base to head) toward you
this articulation is on the side form which the bone comes

Question 16

Hamate

Answer 16

has a hook-shaped, nonarticular projection (hamulus)

Question 17

Siding: positional hamate

Answer 17

place the flat nonarticular surface down the hook and the two adjacent metacarpal facets away from you
the hook leans toward the side from which the bone comes

Question 18

MC 1 (thumb)

Answer 18

shortest metacarpal, broader and more robust in its shaft

its articular surface is proximal and saddle-shaped

Question 19

MC1 siding

Answer 19

the maximum palmar projection of the bone at the base is always toward the medial side

Question 20

MC2

Answer 20

normally the longest metacarpal

the base presents a long curved blade-like wedge articulating surface

Question 21

MC2 siding

Answer 21

the most proximal part of the base is a broad, blade-like medially positioned wedge

Question 22

MC3

Answer 22

only MC with a sharp projection at its base (styloid process)

Question 23

MC3 siding

Answer 23

the styloid process is on the lateral side

Question 24

MC 4

Answer 24

shorter and more gracile than MC 2 and 3

fairly square base

Question 25

MC 4 siding

Answer 25

the proximal and medial basal faces share a common right-angle articular edge

Question 26

MC 5

Answer 26

the thinnest and shortest MC

Question 27

MC 5 siding

Answer 27

the nonarticular side of the base faces medially, away from MC4