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Rosh/ITE > MSK > Flashcards

MSK Flashcards

1
Q

Most common nerve injury in anterior shoulder dislocation

A

Axillary

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2
Q

Hill-Sachs lesion

A

Posterolateral humeral head compression fracture

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3
Q

Bankart lesion

Further significance of this lesion?

A

Detachment of the anterior inferior labrum from underlying glenoid
Predisposes to subsequent shoulder dislocations

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4
Q

Most common nerve injury in midshaft humerus fx and sequelae

A

Radial nerve → wrist drop

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5
Q

Nerve injured in posterior knee dislocations

A

Peroneal

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6
Q

Immersion foot

A

Cold temps above freezing
Cool, pale feet
Parasthesias

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7
Q

Chilblain/pernio

A

Exposure to dry/damp non-freezing cold
Sores of face, dorsum of hands, feet
Pruritic, erythematous lesions

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8
Q

Shoulder is vulnerable to anterior dislocation in what position

A

Abduction and external rotation

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9
Q

Any high pressure hand injury

A

(Pain solvent, water pressure etc)

Emergent hand surgery

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10
Q

Radial nerve injury

A

Unable to extend wrist
“Saturday night nerve palsy”, injury to axilla (crutches), humeral shaft fx
Often occurs during deep sleep or coma

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11
Q

Flexion teardrop fracture

A

Fx of anteriorinferior vertebral body due to hyperflexion

Unstable: disrupts all three columns

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12
Q

Clay-Shoveler fx

A

Spinous process avulsuon fx, usually C6-7

Stable

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13
Q

Jefferson fx

A

Aka burst fracture
Fx of anterior and posterior arches of C1
Unstable
Due to axial forces (head first into swimming pool)

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14
Q

Treat achilles rupture

A

Splint with ankle in plantarflexion

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15
Q

Kocher Criteria

A 
Pediatric Septic Joint
Non-weight bearing
ESR >40
Fever >38.5
WBC >12K
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16
Q

Ulnar collateral ligament rupture

A

Gamekeeper thumb
Forced abd of thumb MCP
Weak pincer grasp, tenderness on ulnar side of joint, ligament laxity with valgus stress
Thumb spica

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17
Q

Flexor tenosynovitis

A

Often preceded by penetrating injury
Kanavel: pain with passive extension, held in partial flexion, tenderness of tendon sheath, fusiform swelling
IV abx and urgent hand surgery consult

18
Q

Sequela of fibular head fracture

A

Common peroneal nerve
Sensation between toes 1-2
Motor to tibialis anterior and extensor hallucis longus (foot drop)

19
Q

Best suture material for face

A

Nylon

20
Q

Type of pelvic fx do not apply binder to

A

Lateral (get angiography with embolization)

21
Q

Treat open fx?

A

Cedazolin

+gent if extensive soft tissue involvement, traumatic amputation or significant penetrating injury

22
Q

Segond fracture

A

Avulsion of lateral tibial plateau associated with ACL tear

23
Q

Colles fracture

A

Distal radius with dorsal displacement

Median nerve at risk: paraesthesia of first 3 digits

24
Q

Galeazzi fx

A

Distal radius fx with DRUJ

25
Q

Neurovascular problems in posterior hip dislocation

A

Sciatic palsy- usually peroneal nerve

Weakness of extensor hallucis longus, dorsiflexion of foot, diminished sensation on dorsal foot

26
Q

Femoral nerve

A

Sensation over anterior thigh

Hip flexion and knee extension

27
Q

Obturator nerve

A

Sensation to medial thigh

Thigh adduction

28
Q

Common peroneal nerve

A

Sensation of anterior leg

Dorsiflexion of foot

29
Q

Tibial nerve

A

Sensation posterior lower leg

Plantarflexion of foot

30
Q

Sever disease

A

Apophysitis of the calcaneus
Boys 8-12
Worse with running, calcaneal compression
RICE/NSAIDs

31
Q

Compartment syndrome dx

A

Delta pressure <30

Compartment pressure >30-40

32
Q

Most common hernia location

A

Inguinal

33
Q

Mallet finger

A

Forced hyper flexion of distal phalanx
DIP extensor tendon rupture
Splint DIP in hyperextension
Complication: swanneck deformity

34
Q

Boutonniere deformity

A

Extension of MCP and DIP with flexion of PIP

35
Q

Scapholunate dislocation

A

Scaphoid moves vertically, space between lunate and scaphoid >3mm aka Terry Thompson sign aka hole in hand on xr
Thumb spica

36
Q

Lunate dislocation

A

Volar displacement (spilled teacup)

37
Q

Perilunate dislocation

A

Dorsal displacement of capitate.

Lateral view of hand XR, lunate looks normal

38
Q

Calculate delta pressure for compartment syndrome

A

Diastolic pressure minus compartment pressure

<30 is abnormal

39
Q

Tripod fx

A

Lateral orbit, zygoma, maxilla

Blow to malar eminence if zygoma

40
Q

Most common location for mandible fx

A

Body

41
Q

Most commonly sprained ankle ligament

A

Anterior talfofibular ligament

Rosh/ITE (16 decks)

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