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NYCC Bone & Joint > (3) Osteochondroses > Flashcards

(3) Osteochondroses Flashcards

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1
Q

What are osteochondroses?

A

epiphyseal/apophyseal conditions characterized by fragmentation, sclerosis, & irregular articular surfaces
(may be true AVN, post-traumatic deformity, or developmental variation)

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2
Q

What is the term for AVN of the femoral head in a child?

A

Legg-Calve-Perthes (LCP)

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3
Q

What is the term for osteochondrosis of the metatarsal heads?

A

Freiberg disease

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4
Q

What is the term for AVN of the lunate?

A

Keinbock disease

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5
Q

What is the term for osteochondrosis of the tibial tuberosity?

A

Osgood-Schlatter disease

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6
Q

What is the term for osteochondrosis of the inferior pole of the patella?

A

Sinding-Larsen-Johansson (SLJ)

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7
Q

What is the term for osteochondrosis of the thoracic spine?

A

Scheuermann disease

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8
Q

What is the term for osteochondrosis of the vertebral bodies?

A

Kummell disease

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9
Q

What is the term for osteochondrosis of the femoral condyles?

A

Osteochondral fracture (OCD)
(absolutely not SONK)

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10
Q

What is the term for osteochondrosis of the ischiopubic synchondrosis?

A

Van Neck Disease

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11
Q

What is the term for AVN of the femoral head in adults?

A

Chandler disease

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12
Q

What is the term for osteochondrosis of the medial tibial condyle?

A

Blount disease

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13
Q

What is the term for osteochondrosis of the calcaneal apophysis?

A

Sever disease
(= calcaneal apophysitis)

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14
Q

What is the term for osteochondrosis of the navicular in kids?

A

Kohler disease

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15
Q

What is the term for osteochondrosis of the talus?

A

Diaz disease

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16
Q

What is the term for osteochondrosis of the capitellum?

A

Panner disease

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17
Q

What is the term for AVN of the proximal pole of the scaphoid?

A

Preiser disease

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18
Q

What is the term for osteochondrosis of the humeral head?

A

Hass disease

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19
Q

What age group is affected by Legg-Calve-Perthes?

A

3-12 yrs
(younger than SCFE)

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20
Q

What sex is more commonly affected by Legg-Calve-Perthes?

A

M>F (5:1)

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21
Q

What are the clinical features of Legg-Calve-Perthes?

A
  • age 3-12 yrs, M>F
  • 10% bilateral
  • painful limp (referred knee pain)
  • reduced ROM
  • positive Trendelenburg test
  • 2* DJD in adulthood
  • entire process takes 2-8 yrs
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22
Q

What are the early imaging findings of Legg-Calve-Perthes?

A
  • soft tissue swelling
  • +/ve Waldenstrom sign
  • small, flattened femoral head
  • epiphyseal fragmentation
  • sclerosis
  • crescent sign
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23
Q

What is Waldenstrom sign?

A

medial hip joint space:
- >2mm difference side to side
- >11mm absolute value (on one side)

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24
Q

What are the later imaging findings of Legg-Calve-Perthes?

A
  • mushroom deformity
  • wide, short femoral neck
  • coxa vara/magna/plana
  • enlarged greater trochanter
  • sagging rope sign
  • degeneration
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25
What population sees an increased frequency of Freiberg disease?
women who wear high heels (fatigue Fx of MT head causes collapse)
26
What population sees an increased frequency of Osgood-Schlatter disease?
pediatric athletes (running sports) --> eventual overgrowth lasting into adulthood
27
What are 2 other names for Scheuermann disease?
- Juvenile kyphosis (d/t ant wedging) - vertebral epiphysitis
28
What spinal regions are affected by Scheuermann disease?
- midthoracic (75%) - thoracolumbar (25%)
29
What treatment modification should you make for patients with Scheuermann disease?
mobilization only (d/t rigid hyperkyphosis)
30
What is the diagnostic criteria for Scheuermann disease?
anterior wedging: - >5 deg - 3 contiguous segments
31
What are the imaging findings associated with Scheuermann disease?
- anterior wedging - irregular endplates (Schmorl nodes) - loss of disc height - hyperkyphosis (>40 deg)
32
What is another name for Sinding-Larsen-Johansson disease?
Jumper's knee
33
What population sees an increased frequency of Sinding-Larsen-Johansson disease?
hurdlers
34
What radiographic sign is characteristic of Kummel disease?
intravertebral vacuum phenomenon
35
What deformity is caused by Blount disease?
varus deformity of the knee
36
What causes Blount disease?
developmental variation in medial tibial plateau growth center
37
What fracture predisposes a patient to Diaz disease?
aviator Fx
38
What population sees an increased frequency of Panner disease?
baseball pitchers
39
How does Sever disease appear radiographically?
normal (sclerotic) (clinical Dx: painful squeeze)
40
Give 3 differentials in order of likelihood.
1. Infarct 2. Chondrosarcoma 3. Enchondroma
41
What is the diagnosis?
Chandler Dz
42
What is the radiographic sign?
Crescent sign
43
What is the diagnosis?
Chandler Dx
44
What is shown in this bone scan?
Photopenia (Dx: AVN in avascular stage)
45
What is the term for the appearance of the interface between necrotic bone and living bone on an MRI?
Double line sign
46
What are the radiographic findings?
- small femoral head, flattening - positive Waldenstrom sign (Dx: LCP)
47
What radiographic sign is seen here?
Mushroom deformity (Dx: LCP)
48
What is the diagnosis?
LCP (Sign: mushroom deformity)
49
What is the diagnosis?
Chandler Dz
50
What is the diagnosis?
Hass Dz
51
What is the diagnosis?
Keinböck Dz
52
What is the diagnosis?
Freiberg Dz
53
What is the diagnosis? What imaging follow-up is needed?
osteochondritis dissecans (OCD) MRI arthrogram
54
What is the diagnosis?
Subchondral insufficiency fracture
55
What is the diagnosis?
OCD
56
What is the diagnosis?
Subchondral insufficiency Fx
57
What is the diagnosis?
Scheuermann Dz
58
What is the diagnosis?
SLJ
59
What is the diagnosis?
Van-neck disease
60
What is the diagnosis?
Blount disease
61
What is the diagnosis?
Diaz disease
62
What is the diagnosis?
Hass disease
63
What is the diagnosis?
Köhler disease
64
What is the diagnosis?
Preiser disease
65
What is the diagnosis?
Blount disease
66
What is the diagnosis?
Köhler disease
67
What is the diagnosis?
Panner disease
68
What is the diagnosis?
Diaz disease
69
What is the diagnosis?
Köhler disease
70
What is the diagnosis?
Hass disease
71
Patient has pain when squeezing the Achilles. What is the diagnosis?
Sever disease
72
What is the diagnosis?
Hass disease

NYCC Bone & Joint (71 decks)

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