Miscellaneous Flashcards
What are the 8 categories of bone disease?
Congenital Arthritis Trauma Blood (hematological) Infection Tumor Endocrine, nutritional, metabolic Soft Tissue (CATBITES)
Which is associated with a symmetric pattern of uniform loss of joint space that is accompanied by soft tissue swelling, edema, and erosions: OA or RA?
RA
Which is associated with an asymmetric pattern of nonuniform loss of joint space that is accompanied by osteophytes, subchondral sclerosis, and cysts: OA or RA?
OA
What is overall the most common pathology of the spine?
Degenerative joint disease
What is unique about the destruction associated with metabolic joint disease?
Joint space is usually spared (compare to RA and OA)
What other kind of joint disease can usually be associated with a metabolic disease like gout?
DJD
Which type of arthritis is called the “lumpy bumpy arthritis”?
Metabolic
What is the most common organism to cause an infectious/septic arthritis?
Staph. aureus
What is unique about the distribution pattern of infectious/septic arthritis?
Usually monoarticular
How much bone must be destroyed to be able to see it on X-ray?
30-50%
How much bone must be destroyed to be able to see it on a bone scan?
3%
Which arthritis is most likely to occur in those aged 0-20?
Juvenile Rheumatoid Arthritis (JRA)
Which arthritis is most likely to occur in those aged 20-40?
Seronegative or seropositive (inflammatory) conditions
Which arthritis is most likely to occur in those aged 40+?
Degenerative, DISH, gout, CPPD
What is the term for a surgical fusion? Congenital? Pathological?
Surgical = arthrodesis Congenital = synostosis Pathological = ankylosis
What are the ABCDS of joint diseases?
Alignment Bone Cartilage Distribution Soft tissue
What is the technique used to assess for joint disease more accurately than X-ray?
Scintigraphy (bone scan)
Why is the law of parsimony applied to the study of joint diseases?
Patients with one arthropathy will most likely eventually present with another which can complicate the physical findings
What is the most common cause of a neurotrophic arthropathy?
Diabetes
What are neurotrophic arthropathies (aka Charcot joints)?
Diseases resulting from a loss of proprioceptive and sensory function (inability to sense pain)
What is the usual distribution for a neurotrophic arthropathy?
Monoarticular
What are the two categories of neurotrophic arthropathies?
Hypertrophic (bone forming) and atrophic (resorptive)
Non-weight bearing joints are more likely to be affected by what category of neurotrophic arthropathies?
Atrophic (resorptive)
Weight bearing joints are more likely to be affected by what category of neurotrophic arthropathies?
Hypertrophic
What is unusal about the pain symptoms of patients with neurotrophic arthropathies?
Only 30% will have pain thus making diagnosis difficult
What are the 6 D’s of radiographic findings of neurotrophic arthropathies?
Distended joints, density increase, debris, dislocation, disorganization, destruction
What are the common areas for neurotrophic arthropathies?
Feet, knees, spine
What is the condition involving Charcot’s joints of the knees and lumbar spine?
Tabes dorsalis
Are hypertrophic Charcot’s joints more likely to occur n the upper or lower extremities?
Lower (weight-bearing joints)
What is the location of a Lisfranc’s joint?
Tarsometatarsal articulation
What kind of arthropathy presents with a “surgical amputation” appearance due to an osteolytic process of bone resorption?
Atrophic neutrotrophic
Bone resorption of the proximal humerus secondary to syringomyelia revealing a “cut off” sign is indicative of which arthropathy?
Atrophic neurotrophic
Licked “candy stick” appearance is common with what condition?
Atrophic neurotrophic arthropathy
