BROKEN BONES 
435 
Figure 386 . —X-ray of Broken. 
Femur. 
adult. The bones of the skull do not become firmly united 
until the head has reached full size, after which no movement 
- takes place be¬ 
tween these 
bones; (2)mov¬ 
able joints, such 
as the ball-and- 
socket joint in 
the shoulder 
and hip and the 
hinge joint in 
the elbow, 
wrist, knee, and 
ankle; (3) the 
mixed joints of 
the spinal col¬ 
umn which al- 
low only a 
limited move¬ 
ment. 
-— The movable 
joints are bound 
closely together 
by strong bands 
of connective tissue. These bands 
are called ligaments. The tear¬ 
ing or stretching of these liga¬ 
ments is called a sprain. 
343. Broken Bones. — When 
the bones of a limb are broken, 
the physician sets them, i.e. places Figure 387 .— X-ray of the Same 
the broken ends together, and Bone AFTER Healing. 
puts splints on the limb to keep th « lar S e “ oa > lus ” of 
^ ^ newly formed bone which makes 
the parts from slipping until the this bone stronger than before it 
new bone has formed (grown) and was broken. 
Figure 385 . —X-ray 
of Dislocated 
Finger. 
