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Orthobullets Trauma > Coronoid Fracture > Flashcards

Coronoid Fracture Flashcards

1
Q

traumatic elbow fractures that are generally pathognomonic for an episode of elbow instability

A

coronoid fracture

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2
Q

coronoid fractures are traumatic elbow fractures that are generally pathognomonic for ____

A

an episode of elbow instability

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3
Q

coronoid fractures commonly occur with ____

A

elbow dislocation and recurrent instability after dislocation

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4
Q

mechanism

A

traumatic shear injury

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5
Q

typically occurs as distal humerus is driven against coronoid with an episode of severe _____ stress or posterior subluxation

A

varus

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6
Q

typically occurs as distal humerus is driven against coronoid with an episode of severe varus stress or ____ subluxation

A

posterior

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7
Q

fractures at the _____ can amplify elbow instability

A

coronoid base

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8
Q

anterior bundle of the medial ulnar collateral ligament attaches to the _____ 18 mm distal to tip

A

sublime tubercle

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9
Q

anterior bundle of the medial ulnar collateral ligament attaches to the sublime tubercle _____ mm distal to tip

A

18

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10
Q

anterior capsule attaches _____ mm distal to the tip of the coronoid

A

6

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11
Q

_____ attaches 6 mm distal to the tip of the coronoid

A

anterior capsule

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12
Q

associated conditions:

A

posteromedial rotatory instability
posterolateral rotatory instability
olecranon fracture-dislocation
terrible triad of elbow

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13
Q

coronoid anteromedial facet fracture and LCL disruption

A

posteromedial rotatory instablity

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14
Q

what is involved in posteromedial rotatory instability

A

coronoid anteromedial facet fracture and LCL disruption

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15
Q

posterolateral rotatory instability involves what

A

coronoid tip fracture, radial head fracture, and LCL injury

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16
Q

coronoid tip fracture, radial head fracture, and LCL injury

A

posterolateral rotatory instability

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17
Q

usually associated with a large coronoid fracture

A

olecranon fracture dislocation

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18
Q

what is the terrible triad of elbow

A

coronoid fracture (transverse fracture pattern), radial head fracture, and elbow dislocation

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19
Q

coronoid fracture (transverse fracture pattern), radial head fracture, and elbow dislocation

A

terrible triad of elbow

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20
Q

is the coronoid tip intra or extra articular

A

intra-articular

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21
Q

medial facet important for ____ stability

A

varus

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22
Q

_____ important for varus stability

A

medial facet

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23
Q

coronoid functions as an anterior buttress of the ____

A

olecranon greater sigmoid notch

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24
Q

oronoid functions as an _____ buttress of the olecranon greater sigmoid notch

A

anterior

25
Q

important in preventing recurrent posterior subluxation

A

coronoid

26
Q

coronoid is important in preventing recurrent _____

A

posterior subluxation

27
Q

primary resistor of elbow subluxation or dislocation

A

coronoid

28
Q

coronoid is primary resistor of ____

A

elbow subluxation or dislocation

29
Q

presentation:

A

elbow deformity & swelling
elbow pain
forearm or wrist pain may be a sign of associated injuries

30
Q

inspection and palpation will demonstrate:

A

varus or valgus deformity
ecchymosis & swelling
diffuse tenderness

31
Q

recommended radiographs

A

AP and lateral of the elbow

32
Q

useful for high grade injuries and comminuted fractures

A

CT

33
Q

CT scan usage

A

useful for high grade injuries and comminuted fractures

34
Q

nonoperative management includes:

A

brief period of immobilization, followed by early range of motion

35
Q

non op indications

A

Type I, II, and III that are minimally displaced with stable elbow

36
Q

Type I, II, and III that are minimally displaced with stable elbow op or non op

A

non op

37
Q

operative techniques

A

ORIF with medial approach
ORIF with posterior approach
hinged external fixation

38
Q

ORIF with medial approach indications

A

Type I, II, and III with persistent elbow instability
posteromedial rotatory instability

39
Q

Type I, II, and III with persistent elbow instability
posteromedial rotatory instability

A

ORIF with medial approach

40
Q

indications for ORIF with posterior approach

A

olecranon fracture dislocation
terrible triad of elbow

41
Q

olecranon fracture dislocation
terrible triad of elbow

A

ORIF with posterior approach

42
Q

indications for hinged external fixation

A

large fragments
poor bone quality
difficult revision cases to help maintain stability

43
Q

large fragments
poor bone quality
difficult revision cases to help maintain stability

A

hinged external fixation

44
Q

ORIF with medial approach interval

A

medial exposure through an interval between two heads of FCU

45
Q

ORIF with medial approach-exposure more anteriorly through a split in ____ mass

A

flexor pronator

46
Q

cerclage wire or No. 5 suture through ulna drill holes for Type ____ injuries

A

1

47
Q

ORIF with retrograde cannulated screws or plate for Type _____

A

2 or 3

48
Q

type 1 technique

A

cerclage wire or No. 5 suture through ulna drill holes

49
Q

type 2 or 3 technique

A

ORIF with retrograde cannulated screws or plate

50
Q

ORIF with buttress plate fixation or pins and lateral ligament repair for _____

A

posteromedial rotatory instability

51
Q

posteromedial rotatory instability technique

A

ORIF with buttress plate fixation or pins and lateral ligament repair

52
Q

post op rehab:

A

thermoplastic resting splint
avoid shoulder abduction for 4-6 weeks
early active motion

53
Q

thermoplastic resting splint:

A

applied with elbow at 90° and forearm in neutral
restrict terminal 30° extension for 2-4 weeks

54
Q

thermoplastic resting splint:
applied with elbow at 90° and forearm in neutral
restrict terminal _____ for 2-4 weeks

A

30 degrees extension

55
Q

avoid shoulder abduction for 4-6 weeks to prevent ____ movement on arm

A

varus

56
Q

dynamic muscle contraction may improve gapping of the ____ joint after surgical repair

A

ulnohumeral

57
Q

ORIF with posterior approach technique

A

mobilize olecranon fracture to access coronoid fracture for associated olecranon fracture-dislocations
repair coronoid fragment first prior to reducing main ulnar fracture
olecranon ORIF with dorsal plate and screws

58
Q

complications:

A

Recurrent elbow instability
Elbow stiffness
Posttraumatic arthritis
Heterotopic ossification
Early failure

59
Q
A

Orthobullets Trauma (63 decks)

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