Page 7 - 8.4 JOINTS

LL
LL
A
A
A

B
JOI
NT
A
JOI
B

T
OC
OC
KE
KE
T

ND
ND
S
S

1. BALL AND SOCKET JOINT:
:
NT
1. B A LL A ND S OC KE T JOI NT :
:
r
ha
ounded
ha
s
-
ball
ha
s
s
ped
ped
ped
• •The rounded ball-shaped
he
T
one
one
one
bone
bone
bone
its
f
end
f
its
its
f
end
into
into

of
into
of
of

end

end of one bone fits into
w
w
et
k
k

cavity or socket (hollow
et
ca v ity or s oc k et ( hollo w

hollo
hollo
ca
ca
(
(
s
s
oc
ity
oc

or
ity
or
v
v
of
of

the
the

bone
pace)
is
bone

s s s pace) of the other bone is
pace)

space) of the other bone is

other
other
is
ball
ball
et
et
k
k
and
called ball and s oc k et joint.
joint.
oc
called ball and socket joint.
oc
s
s
and
joint.
uc
h
S
• •Such joints allow

allo
w
joints

v
.
.
in all dir
in all dir

v
mo v ements in all dir ections .
ections
ections
mo
mo
movements in all directions.
ements
ements
,
,
,

s
s
:
• • Examples: shoulder joints,
E
xamples
joints
joints
joints
houlder
houlder
s
houlder
hip joints.
hip
.
joints