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OITE Prep Fredericks > OITE2015 > Flashcards

OITE2015 Flashcards

1
Q

Most common type of neonatal brachial plexus palsy?

A

Upper Trunk injury ( ERB)

Klumpke- Lower roots

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2
Q

Effective Tx with Flex Contracture >40d with brachial plexus injury?

A

Serial Casting

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3
Q

AP axis of limb differentiation controlled by?

A

Zone of Polarizing activity. This Zone is in posterior aspect of Apical Ectodermal Ridge. Sonic hedgehog is produced here too

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4
Q

Fibrillin 2 defect?

A

Congenital contractual arachnodactyly

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5
Q

Defect in Collagen Type III

A

Ehlers-Danlos

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6
Q

Femoral Palsy 2/2 Pavlik treatment?

A

DC pavlick, watch for return to FXN. Compressed under inguinal ligament

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7
Q

Infantile BLounts Initial treatment? (MD angle >16d)

A

At age 2–> Orthosis

Osteotomy–>before age 4

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8
Q

Percentage of proximal humeral growth plate to overall length of humerus?

A

80%

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9
Q

Kohlers Disease?

A

AVN os navicular–> Tx with immobilization

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10
Q

Morquio Syndrome additional testing?

A

C1/2 instability–> needs Cspine films before surgery. Is Muccopolysaccharidosis

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11
Q

Juvenile Arthritis

A
  • 4 or fewer joints
  • Symmetrical hands/wrist ankles
  • chronic eye inflammation
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12
Q

INjury most associated with scapular fractures?

A

Lung contusion–> get chest CT

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13
Q

Malunion associated with IMN of proximal tibial shaft fractures?

A

Procurvatum and VALGUS

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14
Q

AP width of proximal tibia is more narrow____ than___

A

Medial than lateral–> forces nail laterally (valgus) with medial starting point

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15
Q

Total Elbow Replacement approach?

A

You CANT do posterior/olecranon approach. NEED to do posterior/Triceps splitting

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16
Q

Double arch sign on lateral elbow?

A

Capitellar shear fracture–>Lateral column extensile approach

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17
Q

Humeral Shaft Osteosynthesis Vs IMN

A

IMN: increaed malreduction, malrotaiton, shoulder stiffness . NO difference union rate, EBL

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18
Q

Medial Epicondyle View on plain films

A

Medial distal humeral Axial View

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19
Q

Approximate Elastic Modulus of Titanium?

A

100MPa (cortical bone 15- stil closest

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20
Q

Hip Fracture elderly In hospital Mort/1 year Mort`

A

6%, 30%

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21
Q

Electric stimulation mechanism ?

A

Promotes upregulation of growth factors

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22
Q

Bare Area (ulna lacks articular cartilage)?

A

Dorsal cortex 2cm distal to triceps insertion

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23
Q

CLASS I Hemorrhage:

A

NL BP
HR<100
750mL or less

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24
Q

CLASS II Hemorrhage:

A

NL BP
HR >100
Decreased PP
750-1500

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25
Q

CLASS III Hemmorrage

A

Decreased BP
HR>120 Decrased PP
1500-2000ML EBL

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26
Q

CLASS IV

A

Lethargic
HR>140
Decrased BP
Hypotensive

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27
Q

Vancouver A

A

ORIF if displaced (Fater in trochanteric region)

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28
Q

Vancouver B1 Tx:

A

B1: around stem, WELL FIXED
TX: ORIF cables, plates

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29
Q

Vancouver B2 Tx:

A

Around stem, LOOSE, GOOD proximal bone

TX: REvision Femoral component- 2 canal diamters past

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30
Q

Vancouver B3 Tx:

A

Poor quality proximal bone- Proximal femoral replacement

31
Q

Vancouver C:

A

Below prosthesis, Treatment ORIF with plate

32
Q

Mirror Therapy?

A

PHantom limb pain

33
Q

2mm of shortening of Metacarpal fractures ___mm of extensor lag?

A

7 mm

34
Q

Camptodactyly?

A

flexion contractures: surgery often dissapointing. Passive stretching is younger than 3 yo

35
Q

Brachial Plexus injury VS root avulation?

A

Dorsal scapular nerve is uslaly sparred in root avulsion (Rhomboid)

36
Q

Long term sequela from hook of hamate fracture?

A

Small finger FDP rupture

37
Q

Scaphoid ORIF

A
  • Displaced 1mm or greater

- Intrascaphoid angulation > 45d

38
Q

Approach for proximal pole scapohoid Fx/

A

Dorsal

39
Q

Thumb CMC restraint to DORSAL dislocation?

A

Dorsal Radial Ligament

40
Q

What is FCR is missing for suspension arthroplasty for CMC arthritis?

A

Use the ECRL

41
Q

Safe Zone for acetabular placemnt

A

30-50ABD

5-25 anteversion

42
Q

Fatigue Cracks asscoaited with?

A

Fretting corrosion (titanium)

43
Q

Kerboul Angle and percent collapse at 5 years?

A

<190- 0%
190-240- 50%
100% >240

44
Q

Estimated EBL for isolated femoral shaft fracture?

A

1250cc(1276)

45
Q

Patellar Clunk Risk Factors?

A
  • Posterior stabilized knee

- Smaller patellar components

46
Q

Lateral Stability in Extension of knee?

Lateral stability in flexion of knee?

A
  • IT band

- Popliteus

47
Q

Risk Factor for Posterior dislocation?

A
  • Spinal disease
  • Alcoholism
  • Failed capusuar repair
  • Neuromuscular disease
48
Q

Most common revision resion <2years?

>2 years?

A
  • Infection <2 years

- Aseptic Loosening >2 years

49
Q

Pelvic Incidence=?

A

SS+PT

Pelvic Incidence will NOT change

50
Q

Dial Test

A

> 10° external rotation asymmetry at 30° only consistent with isolated PLC injury
10° external rotation asymmetry at 30° & 90° consistent with PLC and PCL injury

51
Q

MOA of Gabapentin?

A

Binds to presynaptic calcium channels/ limits release of NTs

52
Q

Etanercept MOA?

A

Antagonist for TNF-Alpha

53
Q

Denosumab MOA?

A

RANKL antibody(improves bone density)

54
Q

Treatment with Denosumab?

A
  • Osteoporosis
  • Giant Cell Tumor
  • Bone Metastases
  • Multiple Myleoma
55
Q

Osteoprotegrin MOA?

A

Does NOT directly bind RANKL, but rather competitively inhibits at level of receptor

56
Q

Keller Arthroplasty?

A

Resection of bse of phalanx–> increased dorsiflexion during ambulation (tx of Wagner I ulcers after TCC unsucessful

57
Q

MDM2 Gene associated with?

A

Atypical Lipomatous Tumor

58
Q

Prophylactic fixation ishould be accompanied by_____ in metastatic cancer?

A

Radiation

59
Q

Staging of agressive Soft Tissue sarcomas?

A
  • Chest radiographs/Chest CT
  • Locoregional Lymph node exam
  • NOT NORMALLY whole body scan (accept Myxoid Liposarcomas)
60
Q

Painful Symptoms associated with Ostoid Osteomas from ______

A

Prostoglandin E2

61
Q

Ewing Sarcoma Tx:

A
  • Multiagent Chemo
  • Radiotherapy
  • Surgery
62
Q

Receptro That stimulates adipogenesis?

A

PPARy2

63
Q

Tendon and ligament development receptor?

A

Scleraxis

64
Q

Heparin MOA?

A

activation of AntiTHrombin II-III (AT II)

65
Q

Major controlling mollecule for collagen fiber size?

A

Decorin

66
Q

Molecule associated with elastin deposition?

A

Fibrillin

67
Q

Molecule associated with tendon crimp?

A

Elastin

68
Q

Slow twitch muscles use what during endurance training?

A

Glycogen AND Fatty acids

69
Q

Molecule most responsible for hydration of intervertebral disk?

A

Aggrecan

70
Q

What molecule has been used in VITRO to stimulat chondrogensis

A

TGF-BEta

71
Q

Pagets disease of bone?

A

Osteoclasts alteered (possible viral), Increased AlkPhos, Increased bone resorption

72
Q

Tendons Ligament Collagen?

Articular Cartilage Collagen?

A
  • Type I

- Type II

73
Q

Achondroplasia?

A

FGFR3 GAIN OF FUNCTION

OITE Prep Fredericks (15 decks)

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