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34 Cards in this Set
- Front
- Back
DISEASES OF BONES
BONES PART 1 |
DISEASES OF BONES
BONES PART 1 |
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The periosteum is?
the endosteum is? |
1. dense outer connect tissue layer
2. lining the medullary cavity |
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woven bone is?
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haphazard arrangement of lamellae with incr of number of osteocytes, usually present with pathology
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hematopoietic marrow is in?
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ribs, vertebrae, pelvic bones, most proximal portions of long bones
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Hormonal control--
What are the three main hormones that regulate calcium and phosphate metabolism? |
calcitonin- inhibit move of calcium from bone to blood
2. parathyroid- bone resorption 3. vit D- absorb of Ca from intestines decrease Vit D leads to rickets in children and ostemalacia in adults |
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disorders of growth and maturation
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-
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the 4 different groups are?
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1. delayed cartilgae maturation disorder
-cretinism -morquios disease 2. bone modeling disorder - osteopetrosis 3. Epiphyseal plate disorder -achondroplasia -scurvy -osteomalacia -kyphoscolioses 4. delayed bone maturation disorder -osteogenesis imperfecta |
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OI-brittle bone disease
etiology ? |
1. hereditary disorder of collagen synthesis leadong to formation of abn collagen
2. insufficient synthesis of type 1 collagen 3. affects hearing, blue sclera |
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disorders of growth and maturation
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-
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OI pathology is?
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dec synthesis of collagen--->reduced bone formation--->thin cortex--->rarefaction of trabeculae--->pahtological fractures
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the 4 different groups are?
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1. delayed cartilgae maturation disorder
-cretinism -morquios disease 2. bone modeling disorder - osteopetrosis 3. Epiphyseal plate disorder -achondroplasia -scurvy -osteomalacia -kyphoscolioses 4. delayed bone maturation disorder -osteogenesis imperfecta |
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OI prevelance is?
Treatment? |
20-50,000
2.no cure, surgical Rodding- rod thru bone to strengthen -exercise as much as possible |
|
OI-brittle bone disease
etiology ? |
1. hereditary disorder of collagen synthesis leadong to formation of abn collagen
2. insufficient synthesis of type 1 collagen 3. affects hearing, blue sclera |
|
OI pathology is?
|
dec synthesis of collagen--->reduced bone formation--->thin cortex--->rarefaction of trabeculae--->pahtological fractures
|
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OI prevelance is?
Treatment? |
20-50,000
2.no cure, surgical Rodding- rod thru bone to strengthen -exercise as much as possible |
|
disorders of growth and maturation
|
-
|
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disorders of growth and maturation
|
-
|
|
the 4 different groups are?
|
1. delayed cartilgae maturation disorder
-cretinism -morquios disease 2. bone modeling disorder - osteopetrosis 3. Epiphyseal plate disorder -achondroplasia -scurvy -osteomalacia -kyphoscolioses 4. delayed bone maturation disorder -osteogenesis imperfecta |
|
OI-brittle bone disease
etiology ? |
1. hereditary disorder of collagen synthesis leadong to formation of abn collagen
2. insufficient synthesis of type 1 collagen 3. affects hearing, blue sclera |
|
the 4 different groups are?
|
1. delayed cartilgae maturation disorder
-cretinism -morquios disease 2. bone modeling disorder - osteopetrosis 3. Epiphyseal plate disorder -achondroplasia -scurvy -osteomalacia -kyphoscolioses 4. delayed bone maturation disorder -osteogenesis imperfecta |
|
OI pathology is?
|
dec synthesis of collagen--->reduced bone formation--->thin cortex--->rarefaction of trabeculae--->pahtological fractures
|
|
OI-brittle bone disease
etiology ? |
1. hereditary disorder of collagen synthesis leadong to formation of abn collagen
2. insufficient synthesis of type 1 collagen 3. affects hearing, blue sclera |
|
OI prevelance is?
Treatment? |
20-50,000
2.no cure, surgical Rodding- rod thru bone to strengthen -exercise as much as possible |
|
OI pathology is?
|
dec synthesis of collagen--->reduced bone formation--->thin cortex--->rarefaction of trabeculae--->pahtological fractures
|
|
OI prevelance is?
Treatment? |
20-50,000
2.no cure, surgical Rodding- rod thru bone to strengthen -exercise as much as possible |
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Osteopetrosis- marble bone disease..
hereditary abnormality of? 2. overgrowth and sclerosis of bones which leads to? |
osteoclasts
2. incr density of skeleton- but still breaks easilty- obliteration of medullary cavity---> anemia |
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Less bone resorption resulting in a net bone.......?
2. two patterns are? |
overgrowth
2. malignant- autosomal recessive -benign-autosomal dominant |
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ACHONDROPLASIA
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-
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achondroplasia is related to?
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dec cartilaginous growth
dwarfism long bones are short and thick |
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epidemiology is?
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most common og growth defects by abn body proportions
2. 20% cases have + family hist 3. 80% due to genetic mutation |
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Achondroplasia-
manifestations are? |
limbs-- much shorter than normal
normal skull,facial bones, axial skeleton **narrow foramen magnum and SP canal= hydrocephalus -hi risk of repeat mid ear infection--- hearing loss |
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Achondroplasia treatment is?
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no specific tx
px= most live normal life span w/ carefull attention to dangerous complication |
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Osteochondroma is?
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benign mass
-defect in epihphyseal cartilage of long bone- grows laterally soft tissue, from outer hyaline cartilage, stops when epiphysis closes off |
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Osteochondroma manifestations include?
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solitary(mostly), or multiple (inherited autosomal dominant)
2. dx in children(multiple)& young adults 3. men affected 3 times more than women 4. mushroom shaped mass, 3-5cm 5. asymptomatic or symptomatic: deformity, pressure 6. malignant change <1% |