Flashcards in New Material for Final Part 3 Deck (40)
Where do metaphyseal/diaphyseal infarcts usually occur?
the medullary of the distal femur, proximal tibia, and proximal humerus
What do metaphyseal/diaphyseal infarcts look like?
serpent-like configuration with central sclerosis
What is Chandler's Disease and who gets it typically?
AVN of femoral head in adults, usualy males aged 30-70
"bilateral but asymmetric 50% of the time"
AVN of the adult femoral head
What is the "bite sign?"
a semi-lunar or wedged necrotic area involving the superior margin of the femoral head
Snow Cap Sign, crescent/rim sign, mushroom deformity, and hanging rope sign all indicate what?
What is the term for an arc like radioucency beneath the superior weight bearing surface of the femoral head which is associated with AVN?
subchondral fracture (rim or crescent sign)
T/F: Once AVN heals, it is typically the beginning of DJD.
Why might a person with lupus develop AVN?
Steroids are often prescribed for lupus
What disease affects mostly boys, is sometimes bilateral, causes groin pain, and involves AVN of the femoral capital epiphysis before closure?
What are the 4 stages of Legg-Calve-Perthes Disease?
avascular stage (0-12 months)
revascularization stage (6 months-4 years)
repair and remodeling (1-2 years)
What are 3 common soft tissue signs of hip joint disease?
capsular swelling, small obturator (hip flexion), and increased TDD
What condition represents a focal subchondral infarction of sub-articular bone where the necrotic bone may heal spontaneously or become a free floating fragment separated from the parent bone?
Who typically gets osteochondritis dissecans? where do they get it?
males aged 11-20;
knee is mc location, especialy medial femoral condyle
What are the typical symptoms of osteochondritis dissecans?
may be asymptomatic or have vague symptoms such as, clicking, locking, limitation of movement, swelling, or pain aggravated by movement.
What condition doe osteochondritis dissecans predispose the patient to?
Other than the knee where might a patient have osteochondritis dissecans?
humeral head, capitellum of the elbow, or the medial surface of the talus.
What is a joint mouse?
osteochondral fragment that has detached
What is SONK?
spontaneous osteonecrosis of the knee - idiopathic (aged) AVN of the knee
T/F: SONK is associated with lateral meniscal lesions.
False; associated with medial meniscal lesions
What is the term for the fragmentation of the apophysis of the tibial tuberosity often seen in young, teenage males which typically is asymptomatic by age 18?
Osgood Schlatter's Disease
What is the difference between Osgood Schlatters's and Sindig-Larsen-Johanssen disease?
SLJ disease involves the inferior pole of the patella rather than the tibial tuberosity
What is the name for AVN of the metatarsal head, usually the second, which affects females more often possibly due to wearing heels?
What condition involves AVN of the lunate in males aged 20-40 y/o who are involved in manual labor?
Kienbock's Disease aka Drillers disease
What bone is involved in Kohler's Disease?
What disease most commonly affects teens, has irregular end plates, affects 3 contiguous vertebrae, may display schmorl's nodes, and is aka Juvenile Discogenic Disease?
The primary etiology of this disease appears to be failure of embryologic vascular channels, centrum defects, and notochord clefts to disappear leaving endplate defects. What is this disease?
Juvenile Discogenic Disease (Scheuermann's)
T/F: Severs Disease is a necrosis and fragmentation of the calcaneal apophysis.
False; Sever disease is not a necrosis but a sclerosis and fragmentation of the calcaneal apophysis
What is the term for serpiginous regions of calcification within the bone medulla, usually associated with arteriosclerosis, which look similar to enchondromas/chondrosarcomas?
Calcified medullary infarct