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0:00
Hello. I'm Nihal Apaydin from
Ankara University,
Faculty of Medicine,
and I'm a full
Professor of Anatomy in
the Department of Anatomy.
0:12
I'm talking about the anatomy of
the forearm and the hand in
this presentation
which has two parts.
In the first part, I mentioned
to you about the anatomy of
the forearm and in the
second part of my talk,
I will be covering the
wrist and the hand.
0:29
Now, let's get started
with the second part,
the wrist and the hand.
0:35
The hand is the region of
the upper limb distal to
the wrist joint and is
divided into three parts:
the wrist, metacarpus,
and digits.
It has an anterior
surface termed as palm
and a posterior surface
termed as dorsum.
0:54
There are three groups
of bones in the hand.
The carpal bones
are eight in number
and they are the
bones of the wrist,
the metacarpal bones
are five in number
and are the bones
of the metacarpals,
and the phalanges are
the bones of the digits.
The thumb has only two, and
the rest of the digits,
I mean the index,
middle, ring, and
little fingers have
three phalanges.
1:23
The wrist has eight carpal
bones, as I told you before,
and they are arranged in
proximal and distal rows
each of which consists
of four bones.
The proximal row from
lateral to medial
consists of a
bullet-shaped scaphoid,
a crescent-shaped lunate,
a three-sided triquetrum and
a pea-shaped pisiform bone,
on the proximal row in here.
The pisiform is actually
a sesamoid bone
in the tendon of the flexor
carpi ulnaris muscle
and articulates with
only the triquetrum
through its anterior surface.
The distal row, from lateral
to medial, consists of
irregular four-sided trapezium,
containing a saddle-shaped
articular surface
for the first metacarpal bone
and another four-sided
bone, which is trapezoid,
the capitate, which has a head,
and the hamate,
which has a hook.
There are two mnemonics
to remember these rows.
The initial letters of which
start with the initials of
the names of the bones.
She looks too pretty,
try to catch her;
or some lovers try positions
that they can't handle.
