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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
CLASS III Hemmorrage
Decreased BP HR>120 Decrased PP 1500-2000ML EBL
26
CLASS IV
Lethargic HR>140 Decrased BP Hypotensive
27
Vancouver A
ORIF if displaced (Fater in trochanteric region)
28
Vancouver B1 Tx:
B1: around stem, WELL FIXED TX: ORIF cables, plates
29
Vancouver B2 Tx:
Around stem, LOOSE, GOOD proximal bone | TX: REvision Femoral component- 2 canal diamters past
30
Vancouver B3 Tx:
Poor quality proximal bone- Proximal femoral replacement
31
Vancouver C:
Below prosthesis, Treatment ORIF with plate
32
Mirror Therapy?
PHantom limb pain
33
2mm of shortening of Metacarpal fractures ___mm of extensor lag?
7 mm
34
Camptodactyly?
flexion contractures: surgery often dissapointing. Passive stretching is younger than 3 yo
35
Brachial Plexus injury VS root avulation?
Dorsal scapular nerve is uslaly sparred in root avulsion (Rhomboid)
36
Long term sequela from hook of hamate fracture?
Small finger FDP rupture
37
Scaphoid ORIF
- Displaced 1mm or greater | - Intrascaphoid angulation > 45d
38
Approach for proximal pole scapohoid Fx/
Dorsal
39
Thumb CMC restraint to DORSAL dislocation?
Dorsal Radial Ligament
40
What is FCR is missing for suspension arthroplasty for CMC arthritis?
Use the ECRL
41
Safe Zone for acetabular placemnt
30-50ABD | 5-25 anteversion
42
Fatigue Cracks asscoaited with?
Fretting corrosion (titanium)
43
Kerboul Angle and percent collapse at 5 years?
<190- 0% 190-240- 50% 100% >240
44
Estimated EBL for isolated femoral shaft fracture?
1250cc(1276)
45
Patellar Clunk Risk Factors?
- Posterior stabilized knee | - Smaller patellar components
46
Lateral Stability in Extension of knee? | Lateral stability in flexion of knee?
- IT band | - Popliteus
47
Risk Factor for Posterior dislocation?
- Spinal disease - Alcoholism - Failed capusuar repair - Neuromuscular disease
48
Most common revision resion <2years? | >2 years?
- Infection <2 years | - Aseptic Loosening >2 years
49
Pelvic Incidence=?
SS+PT | Pelvic Incidence will NOT change
50
Dial Test
> 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
MOA of Gabapentin?
Binds to presynaptic calcium channels/ limits release of NTs
52
Etanercept MOA?
Antagonist for TNF-Alpha
53
Denosumab MOA?
RANKL antibody(improves bone density)
54
Treatment with Denosumab?
- Osteoporosis - Giant Cell Tumor - Bone Metastases - Multiple Myleoma
55
Osteoprotegrin MOA?
Does NOT directly bind RANKL, but rather competitively inhibits at level of receptor
56
Keller Arthroplasty?
Resection of bse of phalanx--> increased dorsiflexion during ambulation (tx of Wagner I ulcers after TCC unsucessful
57
MDM2 Gene associated with?
Atypical Lipomatous Tumor
58
Prophylactic fixation ishould be accompanied by_____ in metastatic cancer?
Radiation
59
Staging of agressive Soft Tissue sarcomas?
- Chest radiographs/Chest CT - Locoregional Lymph node exam - NOT NORMALLY whole body scan (accept Myxoid Liposarcomas)
60
Painful Symptoms associated with Ostoid Osteomas from ______
Prostoglandin E2
61
Ewing Sarcoma Tx:
- Multiagent Chemo - Radiotherapy - Surgery
62
Receptro That stimulates adipogenesis?
PPARy2
63
Tendon and ligament development receptor?
Scleraxis
64
Heparin MOA?
activation of AntiTHrombin II-III (AT II)
65
Major controlling mollecule for collagen fiber size?
Decorin
66
Molecule associated with elastin deposition?
Fibrillin
67
Molecule associated with tendon crimp?
Elastin
68
Slow twitch muscles use what during endurance training?
Glycogen AND Fatty acids
69
Molecule most responsible for hydration of intervertebral disk?
Aggrecan
70
What molecule has been used in VITRO to stimulat chondrogensis
TGF-BEta
71
Pagets disease of bone?
Osteoclasts alteered (possible viral), Increased AlkPhos, Increased bone resorption
72
Tendons Ligament Collagen? | Articular Cartilage Collagen?
- Type I | - Type II
73
Achondroplasia?
FGFR3 GAIN OF FUNCTION

OITE Prep Fredericks (15 decks)

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