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DRG1004 > Week 5 - Tibia/Fibula, Knee & Femur > Flashcards

Week 5 - Tibia/Fibula, Knee & Femur Flashcards

1
Q

what is the target of lateral tibia & fibula

A

VCR perpendicular to IR & center along midline of affected at mid-point between ankle & knee joints

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2
Q

what is the collimation of lateral tibia & fibula

A

Superior = knee joint
Anterior = soft tissue margins of anterior aspects of tibia including patella
Posterior = soft tissue margins of posterior aspect of lower leg
Inferior = ankle joint

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3
Q

what is the ideal position of lateral tibia & fibula

A

Tibia superimposes ½ of fibular head
Fibular midshaft not superimposed by tibia
Posterior aspects of distal tibia & fibula aligned

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4
Q

what is the ideal area of lateral tibia & fibula

A

Knee joint, ankle joint, surrounding soft tissues included

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5
Q

what is the target of AP tibia & fibula

A

VCR perpendicular to IR & center along midline of affected at mid-point between ankle & knee joints

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6
Q

what is the collimation of AP tibia & fibula

A

Superior = knee joint
Lateral = soft tissue margins of medial & lateral aspects of tibia & fibula
Inferior = ankle joint

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7
Q

what is the ideal position of AP tibia & fibula

A

Tibia superimposes ¼ of fibula head & ½ of distal fibula
Fibular midshaft not superimposed by tibia

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8
Q

what is the ideal area of AP tibia & fibula

A

Knee joint, ankle joint, surrounding soft tissues included

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9
Q

what is the AP single knee erect projection

A

HCR directed perpendicular to IR and center to point 1 cm inferior to apex of patella

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10
Q

what is the AP double knee erect projection

A

HCR directed perpendicular to IR and center to mid of vertical bucky, at level 1 cm inferior to apex of patella

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11
Q

what is the lateral knee projection

A

VCR angled 5 - 7 degrees cephaladly and center to point 2.5 cm distal to medial condyle

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12
Q

what is the collimation of AP knee erect projection

A

superior = distal third of femur
inferior = proximal third of tibia/fibula
lateral = soft tissue margins

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13
Q

what is the collimation of lateral knee projection

A

superior = distal third of femur
inferior = proximal third of tibia/fibula
posterior = soft tissue margin posterior to knee joint
anterior = patella to include surrounding soft tissue margins

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14
Q

what is the ideal position of AP knee

A
  1. Femoral epicondyles shown
  2. Symmetrical femoral condyles
  3. Intercondylar eminence is centered within intercondylar fossa
  4. tibia superimposes 1/3 of fibular head
  5. patella lies proximal to femoral patellar surface & slightly lateral to knee midline
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15
Q

what is not seen if knee is rotated too medially or laterally for AP knee

A
  1. Femoral epicondyles shown
  2. Symmetrical femoral condyles
  3. Intercondylar eminence is centered within intercondylar fossa
  4. tibia superimposes 1/3 of fibular head
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16
Q

what is not seen if knee is not fully extended for AP knee

A

patella lies proximal to femoral patellar surface & slightly lateral to knee midline

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17
Q

what is the ideal area of AP knee

A

knee joint, distal third of femur, proximal third of tibia/fibula, surrounding soft tissues included

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18
Q

what is the ideal position of lateral knee

A
  1. patella situated proximal to patellar surface of femur
  2. open patellofemoral joint
  3. distal margins of medial & lateral femoral condyles aligned
  4. fibular head is 1.25 cm distal to tibia plateau
  5. anterior & posterior margins of medial & lateral femoral condyles are aligned
  6. tibia superimposes 1/3 of fibular head
19
Q

what is the ideal area of lateral knee

A

1/3 of distal femur & proximal lower leg, surrounding knee soft tissues

20
Q

what is ASIS

A

anterior superior iliac spine

21
Q

what is the collimation of AP femur

A

superior = ASIS
inferior = knee joint
lateral = surrounding soft tissue margins of medial & lateral aspects of affected femur

22
Q

what is the target of AP femur

A

Using 120 cm SID, VCR directed perpendicular to IR and center along midline of femur midway between hip & knee joints

23
Q

what is the target of lateral femur

A

Using 120 cm SID, VCR directed perpendicular to IR and center along midline of femur midway between hip & knee joints

24
Q

what is the collimation of Lateral femur

A

superior = hip joint
inferior = knee joint
posterior = surrounding soft tissue margins
anterior = soft tissues of anterior & posterior aspects of femur including patella

25
Q

what is the ideal position of AP femur

A
  1. Femoral neck shown w/o foreshortening
  2. Open obturator foramen
  3. Greater trochanter shown in profile laterally
26
Q

what is the ideal area of AP femur

A

hip joint, knee joint, surrounding soft tissues included

27
Q

what is the ideal position of lateral femur

A
  1. lesser trochanter shown medially
  2. femoral neck & head are superimposed over greater trochanter
  3. femoral shaft shown w/o foreshortening
28
Q

what is the ideal area of lateral femur

A

hip joint, knee joint, SSTM

29
Q

what are the clinical indicators of osteoarthritis of knee

A

narrowed joint space & formation of osteophytes

30
Q

what causes osgood schlatter’s disease

A

repetitive microtrauma & traction of patellar tendon at level of tibial tubercle

31
Q

when does osgood schlatter’s disease develop

A

predominantly 10 - 14 years old

32
Q

what is the kVp, mAs, SID of tibia & fibula

A

kVp = 55 - 66
mAs = 2 - 5
SID = 100 - 120 cm

33
Q

what is the kVp, mAs, SID of AP knee

A

kVp = 55 - 66
mAs = 2.5 - 5
SID = 100 cm

34
Q

what is the kVp, mAs, SID of Lateral Knee

A

kVp = 63 - 73
mAs = 3.2 - 6
SID = 100 cm

35
Q

what is the kVp, mAs, SID of Skyline Knee

A

kVp = 63 - 73
mAs = 3.2 - 6
SID = 120 - 150 cm

36
Q

what is the kVp, mAs, SID of Femur

A

kVp = 70 - 78
mAs = 14 - 22
SID = 100 cm

37
Q

TKR?

A

total knee replacement

38
Q

UKA

A

Unicompartmental knee arthroplasty

39
Q

what is chondromalacia patellae

A

softening & degeneration of articular hyaline cartilage of patella

40
Q

what is a frequent cause of anterior knee pain

A

chondromalacia patellae

41
Q

what are the clinical indicators of osteoarthritis of knee

A

narrowed joint space & formation of osteophytes, irregular articular surfaces

42
Q

what is segond #

A

avulsion # of knee often associated with ACL

43
Q

ACL

A

anterior cruciate ligament

DRG1004 (12 decks)

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