fracture repair Flashcards
1
Q
Haemotoma
A
48-72 hours clotting no blood supply so bone cells die imflammation- phagocytosis angiogenesis
2
Q
Fibrocartilagenous callus formation
A
3-4/52
fibroblast secrete collagen synthesis
osteogenic cells differentiate to chdroblasts which produce fibrocartilage
3
Q
formation of bony callus
A
3-4/12
osteoprodgenitor cells differentiate into osteoblasts cells
build new spongy bone on the fibrocartilagenous callus.
4
Q
Bone remodelling
A
6+/12
spongy bone replaced with cortical bone
5
Q
types of fractures
A
severity
open/compound - closed/simple
impacted- displaced
commineted- compressed
Shape displaced- transverse/spiral/oblique muscle pulls bone fragement apart spiral-twisting forces oblique-combination of twisting and direct force transverse-direct force applied to shaft comminuted-sudden loading greenstick- high collagen content epiphyseal-growth plates still open
6
Q
complication
A
blood vessel damage nerve damage tendon damage growth impairment osteoarthritis Sudeck’s atrophy Compartment syndrome Volkmann’s ischaemia Myositis Ossificans
7
Q
clinical feature
A
pain tendoness swelling bruising deformity impaired function palpable lump
8
Q
Bone disorder
A
Agenesis Osteogenesis Imperfecta Spina Bifida Endocrine Disorder-giantism and drafism nutritional problems
9
Q
osteopenia
A
thinner and weaker bones
decline in osteoblast activity constant osteoclast
10
Q
primary osteoporosis
A
elderly/past menopause
11
Q
secondary steoporosis
A
malnutrion drug therapy prolonged immmobilization smoking alcohol abuse excessive caffine consumption excessive protein consumption lack of calcium lack of sunlight exposure
