ORS 3 Midterms Flashcards
primary cause of osteoporosis
menopause
secondary cause of osteoporosis
glucocorticoid use
modifiable risk factors of osteoporosis
sedentary lifestyle
smoking
drinking
low vit. D intake
low calcium intake
non-modifiable risk factors of osteoporosis
race (caucasian)
previous family hx
premature menopause
treatments for osteoporosis
alendronic acid
bisphosphonates
hormonal replacement
normal T score
within 1.0
T score of people with osteopenia
between 1-2.5
T score of people with osteoporosis
> 2.5
T score of people with severe or established osteoporosis
> 2.5 with fracture
medication risk factors for osteoporosis
Phenytoin therapy
Omeprazole
Glucocorticoids
Vitamin A
indications of increased serum calcium
primary hyperparathyroidism or other causes of hypercalcemia
indications of decreased serum calcium
secondary hyperparathyroidism
malabsorption
indications of decreased serum phosphate
secondary hyperparathyroidism
malabsorption
indications of increased serum alkaline phosphate
osteomalacia
indications of increased serum creatinine
renal osteopathy
adverse effects of bisphosphonates
mild upper GI symptoms
> -2.5 BMD score in men
osteoporosis
-1.5 to -2.5 BMD score in men
reduced bone density
there is a defect in bone mineralization
osteomalacia
minerals that are low in osteomalacia
vit. D
calcium
phosphorus
S/Sx of osteomalacia
periarticular tenderness
easily fatigue
Looser’s zone (thru X-ray - pseudofractures)
treatment for osteomalacia
Vit. D replacement
calcium supplements
sunlight exposure
causes of osteomalacia
low vit. D
hypophosphatemia
tumor-induced osteomalacia
hypophosphatemia
prevalence of primary hyperparathyroidism
F>M (3:1)
hyperparathyroidism results in
loss of bone mass in sites rich in cortical bone
how is primary hyperparathyroidism diagnosed?
increased levels of serum calcium
causes of secondary hyperparathyroidism
vit. D deficiency
low dietary Ca+
loop diuretic theray
renal insuficiency
treatment for secondary hyperparathyroidism
Ca+ supplements
vit. D replacements
brittle bone disease
Osteogenesis Imperfecta
what is impaired in OI?
inability to quantitatively or qualitatively form collagen
what type of collagen is affected in OI?
type I collagen
S/Sx of OI
childhood fractures
deafness in adulthood
blue sclera
mild manifestations of OI
easily sweating
easy bruising
generalized laxity
basal angle landmarks
nasion with the center of the pituitary fossa
anterior border of the foramen magnum with the center of the pituitary fossa
normal basal angle
125-143 degrees
platybasia angle
> 143 degrees
basilar kyphosis angle
<125 degrees
treatment for OI
bisphosphonates
teriparatide
gonadal hormones
inheritance of type 1 OI
X-linked
characteristics of type 1 OI
mild and most common
bones break from mild to mod trauma
most broken bones occur before puberty
normal collagen structure but less than normal is produced
characteristics of type 2 OI
most severe
causes death shortly after birth
improperly formed collagen
characteristics of type 3 OI
most severe type for those who survive the neonatal period
presents with severe physical disabilities
characteristics of type 4 OI
bones break easily
first bone break occurs before puberty
mild to moderate bone deformity
presence of numerous bone breaks at birth
OI congenita
presence of bone fractures soon after birth
OI tarda
type of OI congenita that is compatible with life
Congenita B
type of OI congenita that is incompatible with life
Congenita A
type of OI tarda wherein fractures occur before walking
Tarda A
type of OI tarda wherein fractures occur after walking
Tarda B
cause of blue sclera
thinness and transparency of the collagen fibers of the sclera
blue sclera is commonly associated with
OI
iron deficiency anemia
cause of hyperthyroidism
iatrogenic - overuse of thyroid supplements
proptosis or bulging eyes
exophthalmos
causes of exophthalmos
extension of inflammation into the orbit
invasion of the orbit by new growth
foreign matter being forced into the orbit
cause of exophthalmos in children
orbital cellulitis
cause of exophthalmos in adults
thyroid-associated diseases (graves disease ophthalmopathy)
glucocorticoid treatment of inflammatory bowel disease results in
calcium and vit. D malabsorption
1st biliary cirrhosis manifests in bone as
osteomalacia
osteoporosis
Post-gastrectomy manifests in the bone as
osteoporosis
Avascular necrosis
Osteonecrosis
osteonecrosis primarily affects
weight-bearing joints
S/Sx of osteonecrosis
joint-motion induced pain
prevalence of osteonecrosis
M>F
A degeneration followed by reossification of non-fused epiphyses
osteochondrosis
traumatic causes of osteochondrosis
post-ORIF femoral neck fracture
atraumatic causes of osteochondrosis
steroids
SLE
sickle cell dse
pregnancy
hyperlipidemia
how is osteonecrosis diagnosed through x-ray?
donut lesion
a destructive joint disorder initiated by trauma to a neuropathic extremity
Charcot neuropathic osteoarthropathy
most common etiology of charcot neuropathic osteoarthropathy
diabetic neuropathy
two types of charcot
neuro-traumatic
neurovascular
neuropathy and repeated microtrauma produce joint destruction.
neuro-traumatic theory
Increased peripheral blood flow results in osteolysis and demineralization.
neurovascular theory
clinical manifestation of CNO
erythematous foot with edema and calor
treatment for acute CNO
immobilize the foot and restrict WB
Pre-charcot/Prodromal stage
CNO stage 0
CM of CNO stage 0
red, hot swollen foot
Development/destruction stage
CNO stage 1
CM of CNO stage 1
erythema
foot edema
elevated temperature
no pain
bony debris at joints
coalescence stage
CNO stage 2
CM of CNO stage 2
decreased inflammation
new bone formation
coalescence of large fragments
increased stability
consolidation stage 3
CNO stage 3
CM of CNO stage 3
resolution of inflammation
changes in foot architecture
most common site of CNO
tarsometatarsal joints (40%)
least common site of CNO
calcaneus (5%)
DM results in
increased bone resorption
characterized by a combination of clinical findings of severe disabling arthralgia and arthritis, digital clubbing, and periostitis of tubular bones, with or without synovial effusion.
Hypertrophic Osteoarthropathy
primary HOA is caused by
Pachydermoperiostosis
secondary HOA is caused by
hypertrophic pulmonary ostearthropathy
what causes sickle-shaped RBC?
Hemoglobin S
Avascular necrosis of the Lunate
Kienbock’s
Avascular necrosis of the Navicular
Kohler’s
Avascular necrosis of the vertebral
Kummel’s
Hyperkyphosis involving the discs and its anterior wedging of equal or more than 5 degrees in 3 or more adjacent vertebral bodies
Scheurman’s
Avascular necrosis of the femoral head epiphysis
Legg-Calve-Perthes dse
Avascular necrosis of the metatarsal head
Freiberg’s
Most commonly affected in Freiberg’s
2nd MTT
Spontaneous osteonecrosis of the knee
SONK or Ahlback dse
Avascular necrosis of the humeral head
Hass’ dse
Avascular necrosis of the talus
Dias dse
Avascular necrosis of the medial epicondyle
Adams dse
Avascular necrosis of the radial epiphysis
Madelung dse
Avascular necrosis of the calcaneus
Sever
Avascular necrosis of the distal pole of the patella
Sinding-Larsen-Johansson dse
Avascular necrosis of the phalangeal epiphysis
Theeman dse
Avascular necrosis of the scaphoid
Preiser dse
Avascular necrosis of the vertebral end plates
Scheurmann’s dse
Idiopathic avascular necrosis of the femoral head in adult
Chandler dse
Avascular necrosis of the medial malleolus
Breck dse
a destructive joint disorder initiated by trauma to a neuropathic extremity
Charcot neuropathic Osteoarthropathy
Clinical findings in a pt with Hypertrophic Osteoarthropathy
Severe disabling arthralgia
Arthritis
Digital clubbing
Periostosis of tubular bones
Sickle cell disease is characterized by
Osteonecrosis
Osteomyelitis
Arthritis
most common form of joint infection in sickle cell disease.
Osteomyelitis
An acute vaso-occlusive complication characterized by pain and edema in both hands and feet, frequently with increased local temperature and erythema.
Dactylitis
Another name for Dactylitis
Hand-foot syndrome
Most common site of joint bleeding
Knees
Elbows
Ankles
What does recurrent joint bleeding cause?
Proliferation and inflammation (Hemophilic Synovitis)
Protrusion of one or both eyes anteriorly out of the orbit
Exopthalmos
Cause of expothalmus
Increase in orbital contents
Sclera composition
Collagen (types I-VIII)
Elastin
Proteoglycans
Glycoproteins
Factor I
Fibrinogen
Factor II
Prothrombin
Factor III
Thromboplastin
Factor IV
Calcium
Factor V
Labile
Factor VII
Stable
Factor VIII
Anti-hemolitic factor A
Factor IX
Anti-hemolitic factor B/Christmas
Factor X
Stuart
Factor XI
Factor C
Factor XII
Hageman/Factor D
Factor XIII
Fallen
A glycoprotein crucial to primary hemostasis
Von Willebrand Factor
Diseases associated with Von Willebrand Factor
Von Willebrand dse
Thrombotic Thromobocytopenic purpura
Bernard-Soulier syndrome
Functions of connective tissue
Connect, support, and help bind other tissues
Two primary types of connective tissue are
Connective tissue proper
Specialized connective tissue
Sub types of connective tisue proper
Dense
Loose
Examples of specialized connective tissue
Adipose
Cartilage
Bone
Blood
Reticular tissues
Pathogenesis of Hemochromatosis
Substitution of tyrosine for cysteine resulting in increased intestinal absorption leading to iron overload
Joints most commonly affected in Hemochromatosis
MCP
RC jt
Ankles
Hips
Elbows
Knees
Shoulders
Common s/sx in hemochromatosis
Fatigue
Arthralgias
Bronze diabetes
Hemochromatosis
High index of suspicion for hemochromatosis
Long-standing unexplained jt pain or OA in pts younger than 55 y/o
Dx for Hemochromatosis
Serum Iron
Serum Ferritin
Another name for Wilson’s dse
Hepatolenticular degeneration
Cause of Wilson’s
Mutation in copper-transporting ATPase
Neurologic manifesations of Wilson’s
Dysarthria
Dystonia
Tremors
S/Sx of Wilson’s
Joint pain and stiffness in knees, wrists or other large joints
Distinguishing clinical feature of Wilson’s
Kayser-fleischer rings
a rare autosomal recessive disorder of homogentisic acid metabolism caused by a deficiency of homogentisic acid oxidase
Alkaptonuria
Cause of Alkpatonuria
Deficiency in homogentistic acid oxidase
1st s/sx in childhood of Alkpatonuria
Darkened or black urine
Clinical manifestations of Alkaptonuria in aging people
Back pain
Valve stenosis
Coronary a. calcificiation
Nephrolithiasis
Where can degeneration be found in pts w Alkaptonuria
Lumbar spine
IVD
Tx for Alkaptonuria
Vit C
Portein restriction
Jt replacement
A heterogenous group of diseases characterized by deposition of plasma proteins in an abnormal, insoluble, fibrillar form
Amyloidosis
Most common presentation of Amyloidosis
Congo red stain
A type of amyloidosis that affects organs and tissues
AL amyloidosis
Secondary amyloidosis
AA amyloidosis
Most common organ affected by AA amyloidosis
Kidneys
Poorly understood disease of non caseating granuloma development, typically in the lungs and lymph nodes
Sarcoidosis
Msk S/Sx of Sarcoidosis
Inflammatory Arthritis
Tenosynovitis
Dactylitis
Myopathy
A type of Sarcoidosis that presents with bilat hilar adenopathy with acute erythema nodusm
Lofgren’s syndrome
Tx for Sarcoidosis
NSAIDS
Steroids
Colchicine
Immunosuppressants
An autoimmune diseases that predominantly affects female pts aging 20-30
Systemic Lupus Erythematosus
Cause of SLE
Lupus antibodies
Organ manifesations of SLE
Nephritis
Hematologic
Serositis
Neurologic
Cutaneous
ACR classification criteria
Malar rash
Discoid rash
Photosensitivity
Oral ulcers
Arthritis
Serositis
Renal d/o
Neurologic d/o
Hematologic d/o
How many symptoms in the ACR classification must there be to diagnose SLE
4/11
An exaggerated vasospastic response to cold temperature or emotional stress
Raynaud’s phenomenon
Pathogenesis of Raynaud’s phenomenon
Vasoconstriction leads to reactive hyperemia
an autoimmune disorder that affects the skin and internal organs.
Systemic sclerosis
Prevalence of Systemic Sclerosis
Among people aged 30-50 y/o
Pathogenesis of Systemic Sclerosis
Excessive deposition of collagen
Non-inflammatory Vasculopathy
Alterations in cellular and humoral immunity
Cause of primary vasculitis
Idiopathic
Cause of secondary vasculitis
Infection
Drug
Toxin
Inflammatory d/o
Cancer