Radiographic parameters used by AAOS guideline for considering fixation in many adults under 65
Radial shortening greater than 3 mm
Dorsal tilt greater than 10 degrees
Intra-articular step-off greater than 2 mm :contentReference[oaicite:2]{index=2}
MRI
Occult injury pathways
Suspected scaphoid fracture with negative radiographs
MRI as first-line imaging option in NICE non-complex fracture guidance for suspected scaphoid fracture after exam :contentReference[oaicite:3]{index=3}
TFCC injury suspicion with persistent ulnar-sided wrist pain
Antibiotics and tetanus pathway first when feasible
Analgesia and anesthesia options
Non-opioid adjuncts
Acetaminophen PO 1000 mg
Ibuprofen PO 400 mg to 600 mg
Opioid titration options
Fentanyl IV 25 mcg to 50 mcg increments
Hydromorphone IV 0.2 mg to 0.5 mg increments
Local anesthesia options
Hematoma block
Lidocaine 1% without epinephrine 10 mL
Aspiration before injection
Maximum lidocaine dose 4.5 mg/kg
Regional anesthesia options
Bier block for dorsally displaced distal radius fracture reduction in adults when trained resources available (NICE) :contentReference[oaicite:6]{index=6}
Contraindications
Sickle cell disease
Severe peripheral vascular disease
Inability to monitor tourniquet safely
Procedural sedation pathway
Ketamine IV
Initiate 0.5 mg/kg to 1 mg/kg
If inadequate effect after 1 to 2 minutes, additional 0.25 mg/kg to 0.5 mg/kg
Maximum cumulative dose per local protocol
Propofol IV
Initiate 0.5 mg/kg to 1 mg/kg
Additional 0.25 mg/kg to 0.5 mg/kg boluses
Hypotension risk mitigation with fluids and dose reduction
Worsening pain with tight compartments triggers compartment syndrome escalation
Open fracture medications and timing
Antibiotics and timing
First dose as early as possible after recognition
Cefazolin IV 2 g
Severe beta-lactam allergy
Clindamycin IV 900 mg
Gross contamination or farm injury
Add gentamicin IV 5 mg/kg
Tetanus prophylaxis
Tdap or Td if immunization not up to date
Tetanus immune globulin if high-risk wound and incomplete immunization
Wound care principles
Sterile saline-soaked dressing
Avoid wound probing in ED unless necessary for hemorrhage control
Consultation and transfer
Immediate orthopedics or hand surgery involvement
DVT prophylaxis when relevant
Upper extremity immobilization default
Pharmacologic DVT prophylaxis not routine for isolated distal radius fractures
Risk-based consideration
Prior VTE history
Active cancer
Prolonged immobility for other injuries
Alignment with local protocol
Special Populations
Pregnancy
Pregnancy considerations
Shielding for radiographs when feasible
Medication safety
Avoid NSAIDs in later pregnancy per local obstetric guidance
Opioid minimization strategy
Fall risk and syncope evaluation when indicated
Obstetric consultation when trauma mechanism significant
Geriatric
Fragility fracture framing
Low-energy FOOSH as osteoporosis signal
Secondary fracture prevention referral pathway
Management considerations
Higher risk of loss of reduction with dorsal comminution
Lower threshold for admission for pain control or unsafe home environment
Delirium risk with opioids and sedation
Epidemiology note
Distal radius fracture incidence in elderly reported between 200 and 1200 per 100,000 person-years :contentReference[oaicite:7]{index=7}
Pediatrics
Pediatric fracture patterns
Buckle fracture
Greenstick fracture
Salter-Harris physeal injury
Exam priorities
Growth plate tenderness
Neurovascular exam adapted to age
Management considerations
Remodeling potential with angulation tolerance by age and location
Non-accidental trauma consideration when history inconsistent
Analgesia dosing
Weight-based acetaminophen and ibuprofen per local protocol
Background
Epidemiology
Population patterns
Higher incidence in women than men across adult ages in epidemiologic studies :contentReference[oaicite:8]{index=8}
Increasing incidence reported in large registry datasets
Overall incidence reported around 228 per 100,000 per year in one national study :contentReference[oaicite:9]{index=9}
Co-injury frequency
Ulnar styloid fractures associated with distal radius fractures in more than 50% in a systematic review summary :contentReference[oaicite:10]{index=10}
Pathophysiology
Mechanism to pattern mapping
FOOSH with wrist extension leading to dorsal displacement patterns
FOOSH with wrist flexion leading to volar displacement patterns
Ulnar styloid base fracture as possible DRUJ instability marker
DRUJ instability assessment required regardless of ulnar styloid union status debate :contentReference[oaicite:11]{index=11}
Complication mechanisms
Median nerve compression from swelling or fragment displacement
EPL tendon vulnerability after distal radius fracture
Therapeutic Considerations
Alignment and functional outcomes
Goal of optimizing function rather than radiographs alone emphasized in BOAST :contentReference[oaicite:12]{index=12}
Fixation consideration thresholds in many adults
AAOS guideline uses radiographic thresholds in adults under 65 to guide operative consideration :contentReference[oaicite:13]{index=13}
Analgesia and reduction guidance
Bier block considered for dorsally displaced distal radius fracture reduction in adults in ED when trained (NICE) :contentReference[oaicite:14]{index=14}
Gas and air alone not recommended for this reduction in adults (NICE) :contentReference[oaicite:15]{index=15}
Patient Discharge Instructions
copy discharge instructions
Discharge instructions
Splint care
Keep splint clean and dry
Do not insert objects to scratch under splint
Check fingers for swelling and color change
Swelling control
Elevation above heart as much as possible for 48 hours
Ice over splint 10 to 15 minutes at a time if tolerated
Activity limits
No lifting with injured wrist
Finger range of motion encouraged if allowed by splint
Pain plan
Acetaminophen as directed
Ibuprofen as directed if safe for patient
Opioid only if prescribed and needed
Follow-up
Orthopedic or fracture clinic follow-up per discharge plan
Return for repeat radiographs if scheduled
Return to ED immediately
Increasing pain not controlled with medication
New numbness or tingling in fingers
Fingers becoming pale, blue, cold, or hard to move
Increasing tightness under splint
Splint becomes wet, broken, or too tight
Fever or wound drainage if any wound present
References
Guidelines and evidence sources
AAOS Management of Distal Radius Fractures Clinical Practice Guideline, published December 5, 2020 :contentReference[oaicite:16]{index=16}
BOAST The Management of Distal Radial Fractures, December 2017 :contentReference[oaicite:17]{index=17}
NICE NG38 Fractures (non-complex) assessment and management, recommendations including distal radius reduction anesthesia guidance :contentReference[oaicite:18]{index=18}
Epidemiology of distal radius fractures review article (PMC) :contentReference[oaicite:19]{index=19}
Incidence of carpal tunnel syndrome after distal radius fracture national database study (PMC) :contentReference[oaicite:20]{index=20}
Systematic review summary on ulnar styloid fractures with distal radius fractures (PMC) :contentReference[oaicite:21]{index=21}
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.