MSK

Question 1

Most common nerve injury in anterior shoulder dislocation

Answer 1

Axillary

Question 2

Hill-Sachs lesion

Answer 2

Posterolateral humeral head compression fracture

Question 3

Bankart lesion

Further significance of this lesion?

Answer 3

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

Question 4

Most common nerve injury in midshaft humerus fx and sequelae

Answer 4

Radial nerve → wrist drop

Question 5

Nerve injured in posterior knee dislocations

Answer 5

Peroneal

Question 6

Immersion foot

Answer 6

Cold temps above freezing
Cool, pale feet
Parasthesias

Question 7

Chilblain/pernio

Answer 7

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

Question 8

Shoulder is vulnerable to anterior dislocation in what position

Answer 8

Abduction and external rotation

Question 9

Any high pressure hand injury

Answer 9

(Pain solvent, water pressure etc)

Emergent hand surgery

Question 10

Radial nerve injury

Answer 10

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

Question 11

Flexion teardrop fracture

Answer 11

Fx of anteriorinferior vertebral body due to hyperflexion

Unstable: disrupts all three columns

Question 12

Clay-Shoveler fx

Answer 12

Spinous process avulsuon fx, usually C6-7

Stable

Question 13

Jefferson fx

Answer 13

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

Question 14

Treat achilles rupture

Answer 14

Splint with ankle in plantarflexion

Question 15

Kocher Criteria

Answer 15

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

Question 16

Ulnar collateral ligament rupture

Answer 16

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

Question 17

Flexor tenosynovitis

Answer 17

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

Question 18

Sequela of fibular head fracture

Answer 18

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

Question 19

Best suture material for face

Answer 19

Nylon

Question 20

Type of pelvic fx do not apply binder to

Answer 20

Lateral (get angiography with embolization)

Question 21

Treat open fx?

Answer 21

Cedazolin

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

Question 22

Segond fracture

Answer 22

Avulsion of lateral tibial plateau associated with ACL tear

Question 23

Colles fracture

Answer 23

Distal radius with dorsal displacement

Median nerve at risk: paraesthesia of first 3 digits

Question 24

Galeazzi fx

Answer 24

Distal radius fx with DRUJ

Question 25

Neurovascular problems in posterior hip dislocation

Answer 25

Sciatic palsy- usually peroneal nerve | Weakness of extensor hallucis longus, dorsiflexion of foot, diminished sensation on dorsal foot

Question 26

Femoral nerve

Answer 26

Sensation over anterior thigh | Hip flexion and knee extension

Question 27

Obturator nerve

Answer 27

Sensation to medial thigh | Thigh adduction

Question 28

Common peroneal nerve

Answer 28

Sensation of anterior leg | Dorsiflexion of foot

Question 29

Tibial nerve

Answer 29

Sensation posterior lower leg | Plantarflexion of foot

Question 30

Sever disease

Answer 30

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

Question 31

Compartment syndrome dx

Answer 31

Delta pressure <30 | Compartment pressure >30-40

Question 32

Most common hernia location

Answer 32

Inguinal

Question 33

Mallet finger

Answer 33

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

Question 34

Boutonniere deformity

Answer 34

Extension of MCP and DIP with flexion of PIP

Question 35

Scapholunate dislocation

Answer 35

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

Question 36

Lunate dislocation

Answer 36

Volar displacement (spilled teacup)

Question 37

Perilunate dislocation

Answer 37

Dorsal displacement of capitate. | Lateral view of hand XR, lunate looks normal

Question 38

Calculate delta pressure for compartment syndrome

Answer 38

Diastolic pressure minus compartment pressure | <30 is abnormal

Question 39

Tripod fx

Answer 39

Lateral orbit, zygoma, maxilla | Blow to malar eminence if zygoma

Question 40

Most common location for mandible fx

Answer 40

Body

Question 41

Most commonly sprained ankle ligament

Answer 41

Anterior talfofibular ligament