Revision amputation vs reconstruction vs replant consideration
Urbaniak ring avulsion classification
Class I
Circulation adequate
Class II
Circulation inadequate
Class III
Complete degloving or amputation
Revascularization or replantation implications
Radiographs
Plain film strategy
Finger views
AP
Lateral
Oblique
Hand views if proximal extension concern
Metacarpal injury suspicion
Post intervention films
After reduction
After splinting if alignment concern
Findings that change urgency
Intra articular fracture
Dislocation
Comminution with instability
Foreign body radiopaque
MRI
MRI indications
Occult fracture with negative radiographs and high suspicion
Persistent focal bony tenderness
Tendon or ligament injury characterization when exam limited
Closed tendon rupture concern
Osteomyelitis evaluation in delayed presentation
Persistent drainage or swelling
MRI limitations
Limited role in acute open injury when operative exploration planned
CT
CT indications
Complex intra articular injury for operative planning
PIP fracture dislocation
Comminuted phalanx fracture
Radiolucent foreign body alternative pathway
Consider ultrasound first line
CT limitations
Not a substitute for neurovascular and tendon exam
Disposition
Transfer and admission criteria
Emergent transfer to hand surgery or replant center
Complete amputation with replant potential
Thumb
Multiple digits
Pediatric digit
Near amputation with tenuous perfusion
Dusky tissue
Absent Doppler signal
Arterial injury suspected
Persistent ischemia
Ring avulsion class II or III
Vascular compromise
High grade open fracture suspected
Exposed bone
Major contamination
Admission
Uncontrolled pain
Need for IV antibiotics and serial exams
Planned operative washout and fixation
Social inability to perform wound care safely
Discharge criteria
Outpatient management possible
Stable perfusion and sensation
No tendon dysfunction
Low contamination
Reliable follow up within 24 to 72 hours
Follow up timing
Hand surgery follow up
Open fracture or nail bed repair
Within 24 to 48 hours
Closed stable fracture with intact skin
Within 5 to 7 days
Dressing check for fingertip injury
Within 48 to 72 hours
Treatment
Immediate life-saving interventions
Hemorrhage control
Direct pressure
Bulky dressing
If persistent bleeding, tourniquet strategy
Temporary proximal tourniquet
Time on documentation
Intermittent release if safe
Hemostatic adjuncts
Topical hemostatic gauze if available
Constriction relief
Ring removal
If swelling, cut ring promptly
Perfusion preservation
Loose dressings
Avoid circumferential tight wrap
Warmth for vasospasm
Remove ice from intact digit
Immobilization and Splinting
Splint strategy
Finger based
Aluminum foam splint in position of function
Buddy taping for stable nondisplaced fractures
Hand based
Ulnar gutter for ring and small finger injuries
Radial gutter for index and middle finger injuries
Thumb spica for thumb injuries
Position principles
Intrinsic plus for hand based splints
DIP extension for mallet type injuries
Joint above and below for unstable patterns
Post splint checks
Perfusion reassessment
Cap refill
Color
Sensory reassessment
Two point discrimination
Reduction
Reduction indications
Fracture dislocation
Rotational deformity
Threatened skin
Neurovascular compromise
Analgesia and anesthesia
Local and regional options
Digital nerve block
Lidocaine 1% without epinephrine
Typical 3 to 5 mL total per digit
Split radial and ulnar injections
Bupivacaine 0.25% without epinephrine
Longer duration option
Maximum dose safety
Lidocaine without epinephrine 5 mg/kg
Bupivacaine 2.5 mg/kg
If severe pain or multiple injuries, procedural sedation
Monitoring and readiness
Continuous SpO2
Continuous capnography
Airway equipment at bedside
Resuscitation meds prepared
Ketamine IV
1 mg/kg initial
Additional 0.25 to 0.5 mg/kg for inadequate sedation
Propofol IV
0.5 to 1 mg/kg initial
Titrate 0.25 to 0.5 mg/kg to effect
Systemic analgesia
Acetaminophen PO
1000 mg once
Maximum 4000 mg per 24 hours
Ibuprofen PO
400 to 600 mg once
Maximum 2400 mg per 24 hours
Opioid for severe pain
Morphine IV 0.05 to 0.1 mg/kg
Titration every 10 minutes to comfort and respirations
Reduction technique principles
Traction and countertraction
Deformity exaggeration then reverse mechanism
Gentle sustained force
Avoid repeated forceful attempts
Post reduction requirements
Neurovascular recheck
Perfusion and sensation documentation
Post reduction radiographs
Alignment confirmation
Immobilization in position of stability
Failed reduction pathway
If persistent deformity, urgent hand surgery consult
If neurovascular deficit persists, immediate transfer pathway
Open fracture medications and timing
Antibiotic timing
If open fracture suspected, antibiotics as early as feasible
Goal within 1 hour of presentation
Antibiotic selection
Gustilo type I to II coverage
Cefazolin IV 2 g
Repeat every 8 hours if admitted
If severe beta lactam allergy
Clindamycin IV 900 mg
Repeat every 8 hours if admitted
Gustilo type III or gross contamination
Cefazolin IV 2 g
Plus gentamicin IV 5 mg/kg once daily
Farm or soil contamination concern
Add penicillin G IV 4 million units
Repeat every 4 hours if admitted
Freshwater exposure
Consider coverage for Aeromonas
Ciprofloxacin PO or IV per local protocol
Saltwater exposure
Consider coverage for Vibrio
Doxycycline plus ceftazidime per local protocol
Human bite mechanism
Amoxicillin clavulanate PO 875 mg
Twice daily
If penicillin allergy
Doxycycline plus metronidazole per local protocol
Tetanus prophylaxis
Clean minor wound
If last dose 10 years or more, Td or Tdap
Dirty or open fracture wound
If last dose 5 years or more, Td or Tdap
If unknown or incomplete immunization, TIG plus Td or Tdap
Irrigation and dressing principles
Gentle gross decontamination in ED
Avoid aggressive high pressure irrigation into tissue planes
Moist sterile dressing
Non adherent layer over exposed tissue
DVT prophylaxis when relevant
VTE considerations
Upper extremity injury typically low VTE risk
Pharmacologic prophylaxis rarely indicated solely for finger injury
If admission for major trauma or prolonged immobilization
Follow institutional protocol
Special Populations
Pregnancy
Pregnancy considerations
Analgesia choices
Acetaminophen preferred
NSAID avoidance in third trimester
Antibiotic safety
Cephalosporins generally compatible
Aminoglycosides risk discussion if needed
Imaging considerations
Extremity radiographs with shielding
Risk benefit documentation for CT if required
Geriatric
Geriatric considerations
Vascular disease prevalence
Higher ischemia risk with digital artery injury
Anticoagulant use
Bleeding and hematoma risk
Delirium and respiratory risk with opioids
Lowest effective dose strategy
Pediatrics
Pediatric considerations
Replantation threshold
Lower threshold due to remodeling and long term function
Sedation and analgesia
Weight based dosing
Child life support when available
Growth plate involvement
Salter Harris injury consideration near physis
Non accidental trauma screening when indicated
Inconsistent story or delay in care
Background
Epidemiology
Epidemiology summary
Fingertip injuries common in emergency care
Occupational and household mechanisms frequent
Higher risk occupations
Construction
Food preparation
Machinery work
Pathophysiology
Injury biology
Mechanism to tissue pattern mapping
Sharp injury
Better vessel and nerve ends for repair
Crush injury
Wider zone of devitalization
Avulsion injury
Intimal damage and thrombosis risk
Distal phalanx and nail unit relationship
Nail bed laceration often coexists with tuft fracture
Ischemia mechanisms
Arterial transection
Vasospasm
Tight dressing induced compromise
Therapeutic Considerations
Treatment rationale
Early antibiotics for open fracture infection reduction
Broad consensus recommendation
Early irrigation and debridement planning
Devitalized tissue predicts infection
Replantation decision drivers
Thumb contribution to pinch and grip
Multiple digits synergy for hand function
Distal level has higher success than proximal
Splinting in position of function
Contracture prevention
Pain control strategy
Digital block reduces systemic opioid requirement
Patient Discharge Instructions
copy discharge instructions
Discharge instructions
Wound care
Keep dressing clean and dry
Do not remove dressing unless instructed
Elevation above heart for 48 hours
Splint care
Keep splint dry
Do not tighten wrap
Pain plan
Acetaminophen as directed
Ibuprofen as directed unless contraindicated
Opioid only if prescribed and needed
Activity restrictions
No lifting with injured hand
Protect finger from impact
Antibiotics
Take as prescribed
Do not miss doses
Return to ED now
Increasing pain not controlled
New numbness or inability to move finger
Pale, blue, or cold finger
Rapid swelling or tight dressing feeling
Bleeding through dressing not stopping with pressure
Fever or spreading redness
Pus or foul drainage
Follow up
Hand surgery appointment timing per discharge plan
If no appointment within 48 hours, call clinic or return for reassessment
References
Clinical guidelines and evidence
Core guidance
Open fracture antibiotic timing supported by trauma and orthopedic consensus
Early first dose associated with lower infection risk
Tetanus prophylaxis per national immunization guidance
Booster and TIG based on wound type and immunization history
Replantation indications consistent across hand surgery society teaching
Thumb and multiple digit amputation prioritized
Evidence levels notation
Most replant criteria based on expert consensus
ACEP Level C equivalence where applicable
Antibiotic selection for open fractures supported by guideline consensus
Class I recommendation for prompt antibiotic administration in open fractures
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