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Projections > Int Derangement > Flashcards

Int Derangement Flashcards

1
Q

% of OCD involving the bone

A

75%

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2
Q

Loc of dorsal patellar defect

A

Superolateral

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3
Q

Loc of OCD in talar dome

A

Mid 1/3rd of lateral border or Post 1/3rd of medial border

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4
Q

Effusion in the first few hours is usually d/t

A

hemarthrosis; Non-bloody ones take 12-24 hours

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5
Q

Stress reaction on tibia

A

Post medial cortex

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6
Q

SCFE prognosis by type

A

I to III - Good
IV - Gaurded
V - Poor d/t vascular supply damage

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7
Q

MVMT of the femoral epiphysis in SCFE

A

Postero-infero-medial

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8
Q

Des juvenile Tillaux Fx

A

isolated vertical fx of the lateral portion of the distal tibia

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9
Q

CRITOE

A 
Capitullum - 1 YOA
Radial head - 3
Internal - 5
Trochlea - 7
Olecranon - 9
External - 11
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10
Q

MRI appearance of DOMS is similar to

A

Grade 1 Sprain of muscle

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11
Q

MC muscle to herniate

A

Tibialis anterior

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12
Q

What is found in the urine of a patient with rhabdomyolysis

A

Myoglobulin

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13
Q

Metaphyseal avulsion Fx, abN copper metabolism and blue sclera

A

Menke syndrome (Kinky hair syndrome)

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14
Q

2 MC anterior GHJ dislocation

A

MC - Subcoracoid, 2nd MC - subglenoid

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15
Q

Humeral position with posterior GHJ dislocation

A

Internal

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16
Q

Rockwood IV AC

A

Dis clav goes posterior into the trap

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17
Q

Rockwood V AC

A

Superior dislocation with with deltoid and trap rupture

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18
Q

Rockwood VI AC

A

Clavicle goes below the acromion/coracoid

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19
Q

Which condyle is MCly affected in a condylar fx

A

Lateral

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20
Q

MC epicondyle to Fx

A

Medial

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21
Q

Def Posadas Fx

A

Eponymous name for a transcondylar fx at the elbow, with the distal fragment translating anteriorly

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22
Q

Monteggia BADO 1 Fx

A

MC (60%) Fracture of the proximal or middle third of the ulna with anterior dislocation of the radial head (most common in children and young adults)

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23
Q

Monteggia BADO 2 Fx

A

3nd MC Fracture of the proximal or middle third of the ulna with posterior dislocation of the radial head (70 to 80% of adult Monteggia fractures)

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24
Q

Monteggia BADO 3 Fx

A

2nd MC (20%) Fracture of the ulnar metaphysis (distal to coronoid process) with lateral dislocation of the radial head

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25
Q

Monteggia BADO 4 Fx

A

Fracture of the proximal or middle third of the ulna and radius with dislocation of the radial head in any direction

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26
Q

Mason type 1

A

Non-displaced radial head Fx

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27
Q

Mason type 2

A

radial head fracture with >2mm displacement or angulation

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28
Q

Mason type 3

A

Comminuted, displaced radial head fx

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29
Q

Mason type 4

A

radial head fx with elbow disloaction

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30
Q

Normal Scapholunate angle and what is it in DISI

A

30-60 degrees and >70 in DISI

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31
Q

Normal capitolunate angle and what is it in VISI

A

<30 and >30 in VISI

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32
Q

TFCC palmar classification explained

A

Class 1 = traumatic

Class 2 = Degenerative

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33
Q

Displacement of the PROXIMAL fragment position with femoral diaphysis Fx

A

Ab, Flex, ER

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34
Q

Displacement of the DISTAL fragment position with femoral diaphysis Fx

A

Medial

35
Q

MC tibial plateau Fx and what is the classification

A

isolated lateral (75-80%), Schatzker (Type 2 is MC)

36
Q

Des Powers ratio

A

ids C0/C1 disassociation. Basion-Post arch/Opisthion to anterior arch. ratio should be ~0.77. >1.15 = disassociation

37
Q

MC Fx of C2

A

Dens Type 2

38
Q

2nd MC fx of C2

A

pars

39
Q

MC location of facet dislocation

A

C6-7

40
Q

TT for pillar view

A

35 degrees caudad

41
Q

Spondylolisthesis Type 1

A

Dysplastic/congenital

42
Q

Spondylolisthesis Type 2

A

Isthmic/fatigue Fx

43
Q

Spondylolisthesis Type 3

A

Degenerative

44
Q

Spondylolisthesis Type 4

A

Traumatic (other than pars)

45
Q

Spondylolisthesis Type 5

A

pathologic

46
Q

Spondylolisthesis Type 6

A

Iatrogenic

47
Q

Top 2 MC Spondylolisthesis Types

A

Types 2 and 3

48
Q

3 anatomic types of carpal instability

A
  1. lateral (b/w scaphoid and lunate)
  2. Medial (b/w triquetrum and lunate or triquetrum and hamate)
  3. Proximal (b/w radiocarpal)
49
Q

Tendons involved in dequervain syndrome

A

AB PL and Ex PB

50
Q

GCTTS have calcification?

A

No, hemosiderin deposition

51
Q

Yoyo string appearance

A

UCL with stener lesion

52
Q

magic angle phenomenon is seen on what pulse

A

T1

53
Q

MC location for glenoid labrum AbN

A

11-3 oclock

54
Q

Buford complex

A

MGHL is cord-like and no anterosuperior glenoid labrum

55
Q

Anterior humeral instability is related to which ligament

A

Ant Band of IGHL

56
Q

Def Perthes

A

Ant labrum is lifted off with sleeve of periosteum (not torn)

57
Q

Def ALPSA

A

Anterior labroligamentous periosteal sleeve avulsion. With disruption of the periosteum

58
Q

SLAP lesions 1 - 4

A

1 - Degenerative fraying
2 -MC. Separation of the superior glenoid labrum and LHBT
3 - Bucket-handle tear without extension into the LHBT
4 - Bucket-handle tear with extension into the LHBT

59
Q

SLAP 5 -10

A

type V: anterior-inferior Bankart lesion in continuity with a type II SLAP lesion
type VI: combination of a type II SLAP lesion and an unstable labral flap either anterior or posterior
type VII: type II SLAP lesion with extension to the capsule and the middle glenohumeral ligament (MGHL)
type VIII: type IIB SLAP lesion with posterior labral extension
type IX: complete or almost complete circumferential detachment of the labrum from the glenoid
type X: superior labral tear in combination with extension to the rotator cuff interval or the superior glenohumeral ligament or the coracohumeral ligament

60
Q

Meniscal cysts involve the medial or lateral

A

medial meniscus: posterior aspect of the posterior horn lateral meniscus (More common): anterior/anterolateral aspect of the anterior horn or the body.

61
Q

Discoid meniscus involves the medial or lateral

A

Medial

62
Q

MC loc of meniscal ossicle

A

Post horn of medial meniscus

63
Q

Insall-Salvati ratio

A

Patellar dislocation. Length of the patella compared to the patellar ligament N= 0.8-1.2

64
Q

Cruciate ligaments are intra/extra-synovial

A

extrasynovial, but intraarticular

So it the proximal LHBT

65
Q

peroneal split tendon affects which tendon

A

Peroneus brevis

66
Q

Weakest ankle ligament

A

ATFL

67
Q

is Mortons neuroma a true neuroma

A

No, it is fibrotic inflammatory reaction.

Also named plantar neuromas are: 1st intermetatarsal space: Heuter neuroma
4th intermetatarsal space: Iselin neuroma

68
Q

Wagstaffe-LeFort Fx

A

Avulsion of the medial margin of the distal fibula

69
Q

Dupuytren fx

A

Fx of the fibula above the tib/fib ligament

70
Q

MC loc for cervical flexion teardrop and ass’d with what cord injury

A

C5 and anterior cord syndrome (loss of motor)

71
Q

MC location for cervical extension teardrop and ass’d with what cord injury

A

C2 and central cord syndrome

72
Q

Waters projection shows

A

Midface = Maxillary sinus, orbital floor, nasal septum and zygoma

73
Q

Caldwell projection shows

A

Upper face = Orbital rim, medial orbital wall and sphenoid wings

74
Q

Towne projection shows

A

Skull base

75
Q

Def tripod fx

A
  1. Diastasis of the zygomaticofrontal suture
  2. Post zygomatic arch fx
  3. Fx of inferior orbital rim/lateral maxillary wall
76
Q

Def LeFort 1, 2 and 3

A

anterolateral margin of the nasal fossa involvement
Floating palate
if fractured, it is a type I fracture

inferior orbital rim involvement
Floating maxilla
if fractured, it is a type II fracture

zygomatic arch involvement - can entrap the temporalis mm
Floating face
if fractured, it is a type III fracture

77
Q

Def Maloney’s arch

A

Arch b/w axillary scapular border with the humerus

78
Q

Best view to see Hill-Sach deformity and for Trough sign

A

HS: AP-Int
Trough: AP-Ext or axillary

79
Q

Boundaries of the quadrangular space and what mm atrophies with nerve impingement

A

Teres minor, Teres major, Long head of the triceps and Humerus.

Teres minor atrophies from axillary nerve impingement

80
Q

MC artery to bleed in a pelvic ring disruption fx

A

Gluteal a.

81
Q

Classification system for acetabular fx

A

Letournel

82
Q

Denis classification system is used for what Fx

A

Sacral Fx - Depends on where the Fx line is Zone 1 is lateral to neural foramina, Zone 2 is the neural foramina and Zone 3 in mesial to the neural foramina

83
Q

Hohl-Larson Classification system is for what Fx

A

Patella Fx

Projections (9 decks)

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