Part I

Question 1

This is death of osseous cellular and marrow compnents of bone

Answer 1

AVN

Question 2

The four stages of AVN

Answer 2

Avascular
Revascularization
Repair
Deformity

Question 3

This is the obliteration of epiphyseal blood supply precipates death of the osteocyce and bone marrow cells

Answer 3

Avascular Phase

Question 4

This is AVN of the femoral capital epiphysis before closure

Answer 4

Leg-Calve_Perthes disease

Question 5

This is a focal subconhondral infarction of sub-artcular bone

Answer 5

Osteochondrosis dessicans

Question 6

Osteochondrosis dessecians is MC in this location

Answer 6

Medial femoral condyle

Question 7

Fragmentaion of the inferior pole of the patealla

Answer 7

Sindig-Larsen-Johanssen

Question 8

AVN of the metatarsal head

Answer 8

Freibergs Disease

Question 9

Freiberg’s disease usually affects this bone

Answer 9

MTP 2

Question 10

This is AVN of the lunate

Answer 10

Kienbock’s Disease

Question 11

This is sclerosis and fragmentation of the calcaneal apophysis

Answer 11

Sever’s disease

Question 12

This is calcifactions within the bone medulla

Answer 12

Calcified Medullay infarct

Question 13

AVN is usually this predipostiion

Answer 13

Epiphyseal (femoral and humeral head)

Question 14

Spontaneous osteonecrosis is associated with

Answer 14

medical mesniscal lesion

Question 15

Calcified Medullary Infarct is usually assocoated with

Answer 15

arteriosclerosis

Question 16

Sickle cell gives a predipostion to

Answer 16

salmonella osteomyelitis

Question 17

Infection of the skin,subcutaneous fat, or connective tissue

Answer 17

Celluitis

Question 18

Infection of a joint

Answer 18

Septic arthrisits

Question 19

This is the MC route of dissemination

Answer 19

Hematogenous

Question 20

This is the MC infectious organism

Answer 20

Staph anerus