Bone Growth and Fractures

what are epiphyseal plates (growth plates)

they are cartilage remain that connects epiphysis to diaphysis

what are epiphyseal plates responisble for

growth in bone length

Do epiphyseal plates disapper in adults

true

what is the condition called when the long bones stop growing

Achondroplasia (Dwarfism)

how is Achondroplasia caused

by a gene mutation, an abnormal conversion of cartilage to bone

what is appositional growth

responsible for growth in bone width

how does appositional growth happen

bone forms ridges at surface around blood vessels

periosteum becomes endosteum

how do osteoclasts play a role appositional growth

they make proportional cavity

what happens to your bones when you get old

Tensile strength of bones diminishes

Bones lose calcium

what are broken bones called

Fracture

what are the classified based on fractures

External appearance

Nature of break

Site

what are the external appearnce on a fracture

simple (closed) when the fracture is completely internal

compound (open) when the fracture project through skin

what are the fractures based on nature of break

comminuted (shattered)

transverse (across long axis)

spiral (twisting around)

displaced (abnormal arrangement)

Greenstick (only one side of bone)

what are fractures based on site

Pott’s (tibia and fibula)

Colles’ (distal portion of radius)

Epiphyseal (at epiphyseal plate)

compression (vertebrae)