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NYCC Bone & Joint > Upper Extremity Variants > Flashcards

Upper Extremity Variants Flashcards

1
Q

What is a pseudotumor of the humerus?

A

mach effect where the greater tuberosity appears as a lytic mass
(NOT a Dx)

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2
Q

What is a supracondylar process?

A

exostosis proximal to the medial epicondyle, pointing toward the elbow joint

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3
Q

What is the differential diagnosis for a supracondylar process?

A

pedunculated osteochondroma
(points away from elbow joint)

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4
Q

What is the anomalous soft tissue structure associated with this radiographic diagnosis?

A

Struthers ligament
(Dx = supracondylar process)

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5
Q

What nerve is most likely affected by a supracondylar process?

A

median n

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6
Q

What may cause symptoms in a patient with a supracondylar process?

A
  • median neuropathy
  • brachial a compromise
  • Fx
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7
Q

What is positive ulnar variance?

A

Ulna is >2mm above the radius

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8
Q

What is the clinical significance of positive ulnar variance?

A
  • ulnar impingement syndrome
  • TFCC tear
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9
Q

What is negative ulnar variance?

A

ulna is >2mm below the radius

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10
Q

What is the clinical significance of negative ulnar variance?

A

lunate AVN (Keinbock disease)

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11
Q

What is Keinbock disease?

A

AVN of the lunate

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12
Q

What are the radiographic signs of avascular necrosis?

A
  • sclerosis
  • flattening
  • fragmentation
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13
Q

What is Madelung deformity?

A

short bowed radius with DRUJ dislocation due to failure of medial growth at distal radial physis

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14
Q

What is carpal coalition?

A

congenital fusion of carpal bones

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15
Q

What type of carpal coalition is clinically significant?

A

involving proximal to distal row can have significant biomechanical results or indicate dysplasia
(just 1 row involved is NOT signif.)

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16
Q

What are the most common types of carpal coalition?

A
  1. lunotriquetral
  2. capitate-hamate
    (for lab: just say “carpal coalition”)
17
Q

What is polydactlyly?

A

extra fingers/toes/bones

18
Q

What is syndactlyly?

A

manifests in the form of fusion of the skin between the digits (syndactlyly) or fusion of the osseous phalanges of adjacent digits (synostosis)

19
Q

What is symphalangism?

A

ankylosis/synostosis of the interphalangeal joints in toes or fingers

20
Q

What is the diagnosis?

A

Rhomboid fossa

21
Q

What is the diagnosis?

A

Rhomboid fossa

22
Q

What is the diagnosis?

A

Os acromiale

23
Q

What is the diagnosis?

A

Os acromiale

24
Q

What is the diagnosis?

A

Supracondylar process

25
Q

What is the diagnosis?

A

Proximal radioulnar synostosis

26
Q

What is the diagnosis?

A

Madelung deformity

27
Q

What is the diagnosis?

A

Proximal radioulnar synostosis

28
Q

What is the diagnosis?

A

Madelung deformity

29
Q

What is the diagnosis?

A

Enlarged conoid tubercle

30
Q

What is the diagnosis?

A

Olecranon foramen

31
Q

What is the diagnosis?

A

Negative ulnar variance

32
Q

What is the diagnosis?

A

Positive ulnar variance

33
Q

What is the diagnosis?

A

Carpal coalition

34
Q

What is the clinical significance?

A

None

35
Q

What is the diagnosis?

A

Carpal coalition

36
Q

What is the diagnosis?

A

Polydactyly

37
Q

What is the clinical significance?

A

Significant biomechanical results
(Carpal coalition involving proximal to distal row)

38
Q

What is the diagnosis?

A

Syndactyly

39
Q

What is the diagnosis?

A

Brachymetacarpy

NYCC Bone & Joint (20 decks)

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