DOI Page / Citation link:
https://doi.org/10.11588/diglit.6271#0096
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plentifully supplied with synovia, and surrounded with very
large bursae mucosas.
The strength of the joint is dependant more on its nume-
rous ligaments than the conformation of the bones. Its mo-
tions are flexion, extension, and a slight degree of rotation.
Use. To strengthen the knee-joint, and to serve as a com-
mon pulley for the extensor muscles of the tibia.
The knee-pan is always cartilaginous at birth. Ossifica-
tion begins at different periods after birth, which de-
pends upon the activity of the system. At first the ar-
tery is seen to deposit a few specks of bony matter. It
next appears as if the vessel were itself converted into
bone ; a complete ring of bone is then observed ; and
at length the middle of this annnros is filled with bone,
which goes on increasing until the whole is become
bone. This process in the patella forms a most beau-
tiful series of preparations, especially if injected. For
this purpose, the knee-pans should be collected at all
peuods before they are completely ossified; dried,
and put into spirit of turpentine.
The patella is very frequently fractured. It is never united
by callus, winch would subject it to be more frequently
broken ; but an union is effected between the divided
portions by means of ligament.
FOOT.
The bones of the foot, like those of the hand, are distin-
guished into three orders; those of the tarsus, metatarsus,
and toes.
TARSUS.
The tarsus, like the caipus, consists of a number of small
bones. They are seven in number, and are placed between
the leg and metatarsus. Viewed altogether, the superior part
of the tarsus appears convex and headed, its binder part form-
ing the heel, its anterior part the back of the foot. Below it
plentifully supplied with synovia, and surrounded with very
large bursae mucosas.
The strength of the joint is dependant more on its nume-
rous ligaments than the conformation of the bones. Its mo-
tions are flexion, extension, and a slight degree of rotation.
Use. To strengthen the knee-joint, and to serve as a com-
mon pulley for the extensor muscles of the tibia.
The knee-pan is always cartilaginous at birth. Ossifica-
tion begins at different periods after birth, which de-
pends upon the activity of the system. At first the ar-
tery is seen to deposit a few specks of bony matter. It
next appears as if the vessel were itself converted into
bone ; a complete ring of bone is then observed ; and
at length the middle of this annnros is filled with bone,
which goes on increasing until the whole is become
bone. This process in the patella forms a most beau-
tiful series of preparations, especially if injected. For
this purpose, the knee-pans should be collected at all
peuods before they are completely ossified; dried,
and put into spirit of turpentine.
The patella is very frequently fractured. It is never united
by callus, winch would subject it to be more frequently
broken ; but an union is effected between the divided
portions by means of ligament.
FOOT.
The bones of the foot, like those of the hand, are distin-
guished into three orders; those of the tarsus, metatarsus,
and toes.
TARSUS.
The tarsus, like the caipus, consists of a number of small
bones. They are seven in number, and are placed between
the leg and metatarsus. Viewed altogether, the superior part
of the tarsus appears convex and headed, its binder part form-
ing the heel, its anterior part the back of the foot. Below it