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Chapter 74 / Orthopaedic Surgery 701

ORTHOPAEDIC TRAUMA

 

 

 

 

 

What are the major

1.

Open fractures/dislocations

orthopaedic emergencies?

2.

Vascular injuries (e.g., knee

 

 

dislocation)

 

3.

Compartment syndromes

 

4.

Neural compromise, especially spinal

 

 

injury

 

5.

Osteomyelitis/septic arthritis; acute,

 

 

i.e., when aspiration is indicated

 

6.

Hip dislocations—require immediate

 

 

reduction or patient will develop avascu-

 

 

lar necrosis; “reduce on the x-ray table”

 

7.

Exsanguinating pelvic fracture (binder,

 

 

external fixator)

What is the main risk when

Infection

dealing with an open fracture?

 

 

Which fracture has the

Pelvic fracture (up to 50% with open

highest mortality?

pelvic fractures)

What factors determine the

1.

Age: suggests susceptible point in

extent of injury (3)?

 

musculoskeletal system:

 

 

Child—growth plate

 

 

Adolescent—ligaments

 

 

Elderly—metaphyseal bone

 

2.

Direction of forces

 

3.

Magnitude of forces

What is the acronym for

“NO CAST”:

indications for OPEN

 

Nonunion

reduction?

 

Open fracture

 

 

Compromise of blood supply

 

 

Articular surface malalignment

 

 

Salter-Harris grade III, IV fracture

 

 

Trauma patients who need early

 

 

ambulation

Define open fractures by

 

 

Gustilo-Anderson

 

 

classification:

 

 

Grade I?

1-cm laceration

Grade II?

1 cm, minimal soft tissue damage

702 Section III / Subspecialty Surgery

 

 

Grade IIIA?

Open fracture with massive tissue

 

devitalization/loss, contamination

Grade IIIB?

Open fracture with massive tissue

 

devitalization/loss and extensive

 

periosteal stripping, contamination,

 

inadequate tissue coverage

Grade IIIC?

Open fracture with major vascular injury

 

requiring repair

What are the five steps in

1.

Prophylactic antibiotics to include IV

the initial treatment of an

 

gram-positive anaerobic coverage:

open fracture?

 

Grade I—cefazolin (Ancef ®)

 

 

Grade II or III—cefoxitin/gentamicin

 

2.

Surgical débridement

 

3.

Inoculation against tetanus

 

4.

Lavage wound 6 hours postincident

 

 

with high-pressure sterile irrigation

 

5.

Open reduction of fracture and stabi-

 

 

lization (e.g., use of external fixation)

What structures are at risk with a humeral fracture?

What must be done when both forearm bones are broken?

How have femoral fractures been repaired traditionally?

What is the newer technique?

What are the advantages?

What is the chief concern following tibial fractures?

What is suggested by pain in the anatomic snuff-box?

What is the most common cause of a “pathologic” fracture in adults?

Radial nerve, brachial artery

Because precise movements are needed, open reduction and internal fixation are musts

Traction for 4 to 6 weeks

Intramedullary rod placement

Nearly immediate mobility with decreased morbidity/mortality

Recognition of associated compartment syndrome

Fracture of scaphoid bone (a.k.a. navicular fracture)

Osteoporosis

 

Chapter 74 / Orthopaedic Surgery 703

COMPARTMENT SYNDROME

 

 

 

What is acute compartment

Increased pressure within an osteofascial

syndrome?

compartment that can lead to ischemic

 

necrosis

How is it diagnosed?

Clinically, using intracompartmental

 

pressures is also helpful (especially in

 

unresponsive patients); fasciotomy is

 

clearly indicated if pressure in the

 

compartment is 40 mm Hg (30 to

 

40 mm Hg is a gray area)

What are the causes?

Fractures, vascular compromise,

 

reperfusion injury, compressive dressings;

 

can occur after any musculoskeletal

 

injury

What are common causes

Supracondylar humerus fracture, brachial

of forearm compartment

artery injury, radius/ulna fracture, crush

syndrome?

injury

What is Volkmann’s

Final sequela of forearm compartment

contracture?

syndrome; contracture of the forearm

 

flexors from replacement of dead muscle

 

with fibrous tissue

What is the most common site of compartment syndrome?

What situations should immediately alert one to be on the lookout for a developing compartment syndrome (4)?

What are the symptoms of compartment syndrome?

What are the signs of compartment syndrome?

Calf (four compartments: anterior, lateral, deep posterior, superficial posterior compartments)

1.Supracondylar elbow fractures in children

2.Proximal/midshaft tibial fractures

3.Electrical burns

4.Arterial/venous disruption

Pain, paresthesias, paralysis

Pain on passive movement (out of proportion to injury), cyanosis or pallor, hypoesthesia (decreased sensation, decreased two point discrimination), firm compartment

704 Section III / Subspecialty Surgery

 

Can a patient have a

YES!

compartment syndrome

 

with a palpable or Doppler-

 

detectable distal pulse?

 

What are the possible

Muscle necrosis, nerve damage,

complications of

contractures, myoglobinuria

compartment syndrome?

 

What is the initial treatment

Bivalve and split casts, remove

of the orthopaedic patient

constricting clothes/dressings, place

developing compartment

extremity at heart level

syndrome?

 

What is the definitive

Fasciotomy within 4 hours (6–8 hours

treatment of compartment

maximum) if at all possible

syndrome?

 

MISCELLANEOUS TRAUMA INJURIES AND COMPLICATIONS

Name the motor and sensation tests used to assess the following peripheral nerves:

Radial

Ulnar

Median

Axillary

Musculocutaneous

How is a peripheral nerve injury treated?

What fracture is associated with a calcaneus fracture?

Wrist extension; dorsal web space; sensation: between thumb and index finger

Little finger abduction; sensation: little finger-distal ulnar aspect

Thumb opposition or thumb pinch sensation: index finger-distal radial aspect

Arm abduction; sensation: deltoid patch on lateral aspect of upper arm

Elbow (biceps) flexion; lateral forearm sensation

Controversial, although clean lacerations may be repaired primarily; most injuries are followed for 6 to 8 weeks (EMG)

L-spine fracture (usually from a fall)

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