Webster's New World Medical Dictionary

bone, breast
See 
sternum.
bone, cuboid
The outer bone in the instep of the
foot. It is called the cuboid bone because it is
shaped like a cube. The cuboid bone is jointed in
back with the heel bone (calcaneus) and in front
with the bones just behind the fourth and fifth toes
(metatarsals).
bone, heel
See 
calcaneus.
bone, sesamoid
A little bone that is embedded
in a joint capsule or tendon; for example, the
kneecap (patella).
bone, shin
The larger of the two bones in the
lower leg. The shin bone is anatomically known as
the tibia. Its smaller companion is the fibula.
bone cancer
A malignancy of bone. Primary
bone cancer (cancer that begins in bone) is rare,
but it is not unusual for cancers to metastasize
(spread) to bone from other parts of the body, such
as the breast, lung, and prostate. The most common
type of primary bone cancer is osteosarcoma, which
develops in new tissue in growing bones. Another
type of cancer, chondrosarcoma, arises in cartilage.
Ewing’s sarcoma begins in immature nerve tissue in
bone marrow. Osteosarcoma and Ewing’s sarcoma
tend to occur in children and adolescents, and
chondrosarcoma occurs most often in adults. Pain
is the most frequent symptom of primary and
metastatic cancer in bone. Bone cancer can also
interfere with normal movements and can weaken
the bones, leading to fractures. Diagnosis of bone
cancer is supported by findings of the medical his-
tory and examination, blood tests (including meas-
uring the level of the enzyme for the enzyme alkaline
phosphatase), and X-ray studies, and it is confirmed
by a biopsy. Treatment depends on the type, loca-
tion, size, and extent of the tumor. Surgery is often
the primary treatment. Although amputation of a
limb is sometimes necessary for primary bone can-
cer, chemotherapy has made limb-sparing surgery
possible in many cases. Radiation may also be used.