Goldenstein Trauma List 2 Flashcards
External fixator stability increased by (9)
- End-to-end contact of fracture fragments (#1)
- Larger diameter pins (#2)
- Larger diameter rods
- Increased number of pins
- Increased number of rods
- Pins in different planes
- Rods in different planes
- Decreased bone-rod distance
- Increased spacing between pins
Circular external fixator stability increased by (9)
- Olive wires
- More wires
- Increased wire tension
- Larger diameter wires and half pins
- Decreased ring diameter
- Increased number of rings
- Decreased spacing between adjacent rings
- 2 central rings close to the fracture site
- Wires/pins crossing at 90°
Tscherne grading of soft tissue injury (4)
- Grade 0: Minimal soft tissue damage
- Grade 1: superficial abrasion/contusion
- Grade 2:Deep abrasion, muscle contusion and/or contaminated skin
- Grade 3: severe degloving, crushing, compartment syndrome or vascular injury
Gustilo classification of open fractures (5)
I: clean wound < 1 cm
II: clean wound 1-10 cm
IIIA: clean wound > 10 cm, contaminated wound or extensive injury that can be closed primarily
IIIB: needs flap for coverage
IIIC: arterial injury
ER treatment of open fractures (5)
- Splint
- Tetanus
- Antibiotics
- Neurovascular exam
- Dressing
(S.T.A.N.D.)
Tetanus-prone wounds (6)
- > 6 hours old
- Irregular configuration
- Depth > 1 cm
- Due to a projectile injury, crush, burn or frostbite
- Devitalized tissue
- Gross contamination
Indications for tetanus booster (3)
- Any wound with an incomplete or unknown immunization history
- Any wound with a complete initial series but > 10 years since last booster
- Tetanus prone wound with complete initial series and > 5 years since last booster
Indication for tetanus immunoglobulin (1)
Tetanus prone wound with an incomplete initial series or unknown immunization history
Indications for prophylactic antibiotics (4)
- Open fractures
- Bone exposed
- Hardware placed
- Large hematoma
Signs of muscle viability:
- Contractility
- Color
- Consistency
- Capacity to bleed
(4 C’s)
Signs of vascular injury (10)
Hard (5):
- Absent pulses
- Pulsatile bleeding
- Expanding hematoma
- Bruit
- Thrill
Soft (5):
- Diminished pulses
- Decreased capillary refill
- Hypesthesia
- Decreased leg temperature
- Pallor
Fracture complications
Early systemic (5)
- Venous thromboembolism
- Fat embolism syndrome
- MOSF
- ARDS
- Shock
Early local (5)
- Open wounds
- Hemorrhage
- Fracture blisters
- Skin necrosis
- Infection
Late systemic (2)
- Venous thromboembolism
- Sepsis
Late local (7)
- Infection
- Delayed union
- Non-union
- Malunion
- Post-traumatic arthritis
- CRPS
- Heterotopic ossification
Indications for bone growth stimulators (4)
- Delayed union
- No infection
- No/minimal deformity
- Stable internal fixation
Contraindications to bone growth stimulators (3)
- Synovial pseudarthrosis
- Mobile non-union
- Fracture gap > 1 cm
Causes of fracture non-union (5) systemise\local
- Poor patient (local/systemic)
- Inadequate stability
- Fracture gap
- Loss of blood supply
- Infection
Classification of fracture non-union (4)
Septic
Aseptic
- Hypertrophic
- Oligotrophic
- Atrophic
Principles of atrophic non-union treatment (4)
- Apposition of viable bone ends
- Stable internal fixation
- Grafting to fill defects/provide biology
- Preservation/creation of healthy/well-vascularized soft tissue envelope
Principles of septic non-union treatment (5)
- Remove infected/devitalized tissue
- Apposition of viable bone ends
- Stabilization of fracture
- Preservation/creation of healthy/well-vascularized soft tissue envelope
- Local and systemic antibiotics
Indications for acute deformity correction (3)
- Modest deformities
- Mobile/atrophic non-unions
- Small bone defects
Indications for gradual deformity correction (4)
- Large deformities
- Associated limb length discrepancy requiring lengthening
- Associated segmental defect requiring bone transport
- Stiff/hypertrophic non-unions
Management of segmental bone defects (4)
- Acute limb shortening
- Delayed limb shortening
- Defect reconstruction
- Amputation
Reconstruction of segmental bone defects (4)
- Autograft
- Allograft
- Bone graft substitutes
- Distraction osteogenesis
Advantages of acute limb shortening (6)
- Short treatment time
- Lowest complication rate
- Fracture healing starts immediately
- Improved stability
- Facilitation of wound closure
- Excellent residual limb function
Advantages of autogenous cancellous grafting (4)
- Widely applicable
- Easy to perform
- Low cost
- Osteoconductive and osteoinductive
Disadvantages of autogenous cancellous grafting (4)
- Donor site morbidity
- Slow, unreliable incorporation
- No structural support
- Not applicable for large defects
Indications for distraction osteogenesis (4)
- Limb lengthening
- Deformity correction
- Hypertrophic non-unions
- Segmental bone loss
Advantages of distraction osteogenesis (4)
- Appropriate for large defects
- Immediate stability/weight bearing
- Can address concomitant angular deformity
- Allows for care of soft tissues
Disadvantages of distraction osteogenesis (4)
- Prolonged treatment time
- Pin tract infection
- Specialized equipment/training
- Psychosocial impact of external fixator
Principles of distraction osteogenesis (9)
- Lengthen through metaphysis whenever possible
- Low-energy corticotomy/osteotomy
- Minimal soft tissue stripping
- Stable external fixation
- Latency period
- Distraction of 0.25 mm 3-4x/day
- Neutral fixation interval during consolidation
- Normal physiologic use of the extremity
- Limit lengthening to 20% of bone length per period
Indications for free vascularized fibular grafting (3)
- Conventional bone grafting has failed
- Large defects
- Poor soft tissue bed
Advantages of free vascularized fibular grafting (5)
- Large defects
- Resistant to infection
- Immediate stability
- Rapid healing
- High union rates
Disadvantages of free vascularized fibular grafting (3)
- Donor site morbidity
- Graft fracture
- Specialized techniques/training required
Advantages of antibiotic beads in bone defect management (3)
- Higher local concentration of antibiotics
- Improved dead space management (↓ scar/hematoma)
- Improved contour/easier elevation of soft tissue flaps
Order of deformity correction in malunion (4)
- Angulation
- Translation
- Length
- Rotation
Sequence of repair in traumatic amputations (5)
- Skeletal stabilization
- Arteries
- Veins
- Nerves
- Muscle
Indications for debridement of gunshot wounds (8)
- Bullet in a joint
- Vascular disruption
- Gross contamination
- Palpable missile in the palm/sole
- Massive hematoma
- Severe soft tissue injury
- Compartment syndrome
- Late pain/loss of function with retained missile
Indications for immediate/early amputation (7)
- Limb is a threat to patient’s life
- Non-viable limb
- Irreparable vascular injury
- Warm ischemia time > 8 hours
- Severe crush with minimal viable soft tissue
- Reconstruction demands incompatible with patient’s personal/sociologic/economic needs
- Salvage may precipitate MOSF/ARDS
Predictors of lower functional scores with extremity reconstruction (9)
- Rehospitalization for a major complication
- Low education
- Non-white
- Poverty
- Lack of private health insurance
- Poor social supports
- Low self-efficacy
- Smoking
- Disability/compensation litigation
XR findings of stress fracture (4)
- Periosteal new bone
- Cortical thickening
- Endosteal thickening
- Linear cortical radiolucency
Cardinal features of compartment syndrome
- Pain out of proportion with injury
- Pain with passive stretch
- Pallor
- Paresthesias
- Pulselessness
- Paralysis
(6 P’s)