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1
Q

Which XR view helps exaggerate scapholunate dissociation?

A

Clenched fist view.

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2
Q

Radial sided injury of carpal bones causes VISI or DISI?

A

DISI. Ulnar-sided is VISI.

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3
Q

Comminuted fracture of the base of the 1st metatarsal?

A

Rolando

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4
Q

Guyon’s canal is where?

A

Ulnar nerve passes through pisiform/hamate

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5
Q

Essex-Lopresti fx = ?

A

Fx rad head + ant dislocation of DRUJ

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6
Q

Monteggia Fx = ?

A

Fx prox ulna and ant dislocation rad head

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7
Q

Galeazzi fx = ?

A

Rad shaft fx and ant dislocation of ulna at DRUJ

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8
Q

Best view to eval Hill-Sachs?

A

Internal rotation view

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9
Q

Total shoulder, who gets TSA and who gets reverse TSA?

A

Cuff intact gets TSA, cuff gone wild gets reverse TSA

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10
Q

Corona mortis is made up of who?

A

anast of inf epigastric and obturator vessels

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11
Q

Which tendon attaches to AIIS?

A

Rectus femoris

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12
Q

Honda sign

A

insuff fx of sacrum

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13
Q

Segond fx is where?

A

Lateral tibial platue

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14
Q

Arcuate sign?

A

PCL tear- avulsion of prox fibula

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15
Q

Classic assoc with patellar tendon tear?

A

SLE

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16
Q

What is a normal T score in DEXA?

A

>1.0

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17
Q

What T score represents osteoporosis?

A
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18
Q

Kohlers

A

tarsal navicular

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19
Q

Freiberg

A

2nd metatarsal head

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20
Q

Severs

A

Calcaneal apophysis

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21
Q

Panners

A

capitellum

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22
Q

What soft tissue mass is typically found in the infrascapular chest wall?

A

Elastofibroma. (slow growing, may contain fat, can be hot on PET, but benign).

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23
Q

MSK tumor:

Pediatric

Epiphysis

Lytic with sclerotic rim

Significant surrounding edema

A

Chondroblastoma

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24
Q

MSK tumor:

pediatric

organized rim of sclerosis

central lucency

painless

tibial and femoral cortices

A

NOF

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25
"bamboo spine"
Ankylosing spondylitis. also, SI joint involvement must be present.
26
MSK tumor: intramuscular soft tissue mass fluid signal internal enhancement
intramuscular myxoma ddx: myxoid liposarcoma, but needs to have fatty nodules and septa
27
Localized smooth ossification of the medial femoral condyle. hx: chronic knee pain and sprains.
"Peligrini-Stieda disease" -ossification of the MCL at femoral attachement
28
MSK tumor: pediatric lytic well-circumscribed fragments in the dependent portion
Unicameral bone cyst "fallen fragment sign"
29
MSK tumor: young adult dense, flowing ossification melting candle appearance
Melorheostosis
30
What causes rugger jersey spine?
renal osteodystrophy with secondary hyperparathyroidism.
31
MSK tumor: pediatric expansile lytic with thin cortex fluid fluid levels
Anuerysmal bone cyst.
32
Macrodystrophia lipomatosa
Enlargement of a singIe digit unilaterally in a lower extremity with involvement of the second or third phalanx
33
MSK tumor: pediatric osteoblastic periosteal reaction soft tissue component
Osteosarcoma also: can present with ptx
34
MSK tumor: pediatric aggressive periosteal reaction soft tissue component diaphyseal/metaphyseal
Ewing Sarcoma
35
MSK tumor: adult chondroid calcifications bony replacement painful pelvis/femur
Chondrosarcoma
36
If there is communication of the ankle joint and common (lateral) peroneal tendon sheath, what is torn?
calcaneofibular ligament
37
In scapholunate tear, which band is most important for carpal stability?
dorsal (vs. volar and middle) this is what causes DISI etc
38
What wrist malalignment is most commonly associated with Kienbock's?
negatibe ulnar variance.
39
You are shown increased fluid in the 1st extensor compartment of the wrist either as increase T2 or on ultrasound. What is it?
de Quervain's
40
What is intersection syndrome?
Repetitive use issue of first compartment crossing over second extensor compartment of the wrist. ECR and ECRB and ECRL tenosynovitis. rowers
41
Name two causes of diffuse tenosynovitis.
1. NonTB mycobacterial infxn. hand/wrist. exuberant. spaires muscles. immunocompromised. 2. RA. mult flexor tendons/ECU. can present before bone findings.
42
MSK tumor: finger tip T1 dark, **T2 bright**, enhance avidly
glomus tumor
43
MSK tumor: finger- specifically palmar tendons T1 dark, T2 dark, **blooms on GRE**
Giant cell tumor of the tendon sheath. Basically PVNS of the tendon.
44
MSK tumor: finger T1 dark, T2 dark, and will not bloom on GRE
Fibroma. benign overgrowth of the tendon collagen. GCT of tendon sheath will bloom.
45
What is tennis elbow?
Lateral epicondylitis: Extensor tendon injury, usually ECRB. radial colalteral ligament complext can tear from varus stress.
46
What is golers' elbow?
flexor tendon/ulnar nerve may enlarge from chronic injury.
47
classic presentation of cat-scratch disease?
Epitrochlear lymphadenopathy.
48
where will you find a sublabral foramen (shoulder)?
between the anterior-superior labrium from 1 o'clock to 3'oclock. This will **not** extend below the 3 o'clock position.
49
What is a Buford complex?
absent anterior/superior labrum (1-3 o'clock) with a thickened middle glenohumeral ligament. (this ligament runs right by there).
50
What is a GLAD injury?
"glonlabral articular discruption" is a superficial anterior/inferior labral tear with art cart damage. no instability.
51
What is a perthes injury of the shoulder?
Detachment of the anterior inferior labrum 3-6 oclock- periosteum is intact
52
What is an ALPSA injury?
"anterior labral periosteal sleeve avulsion". medially displaced labroligamentous complex with absence of the labrum on the glenoid rim. intact periosteum. scars down to glenoid.
53
what is a true Bankart injury?
Cartilaginous or bony with periosteum disruption. often Hill Sachs present too.
54
HAGL?
humeral avulsion glenohumeral ligament.--- inferior glenohumeral ligament causes "J" shaped inferior glenohumeral recess.
55
Suprascapular notch cyst affects which muscle(s)?
supraspinatus and infraspinatus
56
spinoglenoid notch cyst affects which muscle(s)?
infraspinatous
57
What nerve compression syndrome causes atrophy of teres minor?
Quadrilateral space syndrome/ compression of the axillary nerve. Quad space= Humerus, minor, major, and long head of triceps
58
What is Parsonage-Turner syndrome?
muscles affected in two or more nerve distributions.
59
How can you tell on sagittals if you are looking at medial or lateral meniscus?
medial meniscus is thicker posteriorly while lateral is equal
60
MSK tumor: pediatric heterogenously enhancing soft tissue mass always consider this, but need biopsy
rhabdomyosarcoma
61
"Pencil in cup"
reactive arthritis
62
63
64
No medullary canal with diffusely dense bones?
Osteopetrosis. problem with osteoclasts.
65
What does an atypical lipomatous tumor look like?
dirty lipoma- there will be small nodules and septa
66
frond-like synovial masses that fat saturate (knee)
lipoma arborescens
67
You are shown a radiograph of a hand with multple phalangeal lesions. How do you tell the difference between hyperparathyroidism and multiple enchondromas?
**Hyperparathyroid**: brown tumors, subperiosteal resorption, coarsening of the trabeculae, acroosteolysis **Enchondromas:** no subperiosteal resorption or acroosteolysis. Phalangeal enchondromas don't have to have that chondroid matrix, so can be tricky.
68
_MSK tumor_ expansile and lytic tumor which can have components of anuerysmal bone cyst
Giant Cell Tumor GCT
69
Difference between *peri*osteal osteosarcoma and *par*osteal osteosarcoma?
* Peri*osteal osteosarc: surface with scalloping of the bone and makes spicules of bone * Par*osteal osteosarc: cauliflower looking at posterior distal femur
70
Downsloping and irregularity of the medial proximal tibia in pediatric patient
Blount's
71
72
absent/hypoplastic nails from birth. flexion contractures and recurrent knee dislocations.
Fong disease/ nail-patella syndrome
73
Mulder sign
squeeze the metatarsal heads together and watch for protruding **Morton neuroma**. between 2/3 MT heads
74
Freiberg's disease
Features of avascular necrosis, including heterogeneous density with deformity/flattening Idealized to the head of the second metatarsal and secondany osteoarthrosis, are characteristic of this diagnosis.
75
Ahlback disease/SONK
AVN MFC
76
Kohler disease
AVN patella or navicular (in kiddos)
77
Kummel disease
AVN vertebral body
78
Mueller Weiss disease
AVN navicular adult
79
Panner disease
AVN capitellum (humerus)
80
Sever disease
AVN calcaneal epiphysis
81
Fong disease
hypoplastic patellae and horns on the iliac bones
82
Edema in the teres and deltoid...
quadrilateral space syndrome
83
MC soft tissue sarcoma in adults?
malignant fibrous histiocytoma

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