Displacement thresholds used in practice range 2 to 15 mm
Radiographic displacement measurement reliability is limited
Pediatric classification
Medial epicondyle fracture association
Elbow dislocation prevalence range 30% to 60%
Incarceration after dislocation risk
Lateral condyle fracture classification
Weiss classification for displacement and stability
Surgical threshold tied to articular displacement
Radiographs
Imaging set
Elbow radiographs
AP view
Lateral view
Oblique view if unclear
Joint alignment
Radiocapitellar line
Anterior humeral line in children
Occult injury indicators
Posterior fat pad sign
Joint effusion
Epicondylar specific pearls
Medial epicondyle fragment
Compare to expected ossification center position in children
Evaluate for intraarticular fragment after dislocation
Lateral sided fragment
Differentiate lateral epicondyle avulsion from lateral condyle fracture
Articular involvement concern with lateral condyle fracture
Post procedure imaging
After reduction if dislocation present
After splinting if alignment concern persists
MRI
Indications
Persistent pain with negative radiographs
Occult fracture concern
Osteochondral injury concern
Ligament and instability evaluation
UCL tear
Common flexor origin injury
High level thrower with valgus pain
Apophyseal injury versus avulsion
Limitations
Access and timing constraints in acute ED setting
Motion artifact in painful injuries
CT
Indications
Intraarticular fragment localization
Suspected incarcerated medial epicondyle fragment
Persistent block to motion
Surgical planning
Complex distal humerus involvement
Suspected lateral condyle articular displacement
Radiographs equivocal with high suspicion
Displaced fragment unclear on plain films
Radiation considerations
Pediatric dose minimization
CT only when result changes management
Disposition
Consultation and transfer triggers
Emergent orthopedics
Open fracture
Incarcerated fragment in joint
Irreducible dislocation
Persistent neurovascular deficit after reduction and splinting
Compartment syndrome concern
Urgent orthopedics
Elbow instability after reduction
Significant displacement in pediatric medial epicondyle fracture with functional demand
Lateral condyle fracture suspicion
Transfer criteria
No pediatric ortho coverage with suspected operative injury
Vascular injury concern needing higher level care
Follow-up and immobilization plan
Discharge pathway
Pain controlled on oral meds
Neurovascularly intact and stable
Reliable follow-up
Follow-up timing
Pediatric epicondyle fracture without high risk features
Orthopedics within 5 to 7 days
Post reduction dislocation with avulsion fragment
Orthopedics within 1 to 3 days
Activity restriction
No throwing or valgus stress activities until cleared
No lifting with injured arm until cleared
Treatment
Immediate life-saving interventions
Time critical actions
If dislocation with ischemia, immediate reduction attempt
If no pulse return, urgent escalation
If worsening neuro deficit, urgent escalation
If open injury, antibiotics and tetanus pathway
Sterile dressing and splint
Avoid closed reduction through open wound if feasible
Immobilization and Splinting
Splint selection
Posterior long arm splint
Elbow at 90 degrees flexion if tolerated
Forearm neutral rotation unless specific instability pattern
Sling support
Comfort and elevation
Skin checks
Immobilization principles
Swelling phase avoidance of circumferential cast
Extra padding over olecranon and epicondyles
Two finger tightness check
Post application reassessment
Motor and sensory exam repeat
Cap refill and pulses repeat
Pain trend after splint
Reduction
Indications
Elbow dislocation present
Threatened skin
Neurovascular compromise
Contraindications or caution triggers
Suspected incarcerated fragment
Gentle technique only
Early orthopedics involvement
Suspected medial condyle fracture
Avoid repeated manipulation
Urgent orthopedics
Analgesia and anesthesia
Non opioid options
Acetaminophen PO
Adult 1000 mg every 6 hours
Pediatric 15 mg per kg every 6 hours
Ibuprofen PO
Adult 400 to 600 mg every 6 hours
Pediatric 10 mg per kg every 6 to 8 hours
Opioid options
Fentanyl IV
Adult 0.5 to 1 mcg per kg every 5 minutes as needed
Pediatric 0.5 to 1 mcg per kg every 5 minutes as needed
Morphine IV
Adult 0.05 to 0.1 mg per kg every 10 minutes as needed
Pediatric 0.05 to 0.1 mg per kg every 10 minutes as needed
Procedural sedation when required
Monitoring and staffing
Continuous pulse oximetry
Continuous capnography when available
Cardiac monitor and blood pressure cycling
Ketamine IV
Initial 1 to 2 mg per kg over 30 to 60 seconds
Supplemental 0.5 mg per kg every 5 to 10 minutes as needed
Recovery positioning and airway readiness
Propofol IV
Initial 0.5 to 1 mg per kg
Supplemental 0.25 to 0.5 mg per kg every 1 to 3 minutes
Hypotension and apnea risk monitoring
Technique principles
Traction and countertraction
Deformity exaggeration then reversal for dislocation patterns
Gentle sustained force
Avoid repeated forceful attempts
Post reduction requirements
Immediate neurovascular recheck
Post reduction radiographs
Immobilization in stable position
Failed reduction pathway
If persistent neurovascular deficit, immediate escalation
If irreducible, urgent orthopedics
If worsening pain and tight compartments, compartment syndrome escalation
Open fracture medications and timing
Antibiotics
Type I and II open fracture coverage
Cefazolin IV
Adult 2 g every 8 hours
Pediatric 30 mg per kg every 8 hours
Severe beta lactam allergy alternative
Clindamycin IV
Adult 600 to 900 mg every 8 hours
Pediatric 10 mg per kg every 8 hours
Gross contamination
Add gram negative coverage per local protocol
Farm or soil contamination expansion per local protocol
Tetanus prophylaxis
Vaccine status unknown or incomplete
Tdap or Td booster
Tetanus immune globulin for dirty wound per immunization history
DVT prophylaxis when relevant
Upper extremity fracture context
Routine pharmacologic prophylaxis not typical in isolated immobilized upper limb
Individual risk assessment
Prior VTE history
Active cancer
Prolonged immobility or hospitalization
Special Populations
Pregnancy
Maternal and fetal considerations
Fall risk and trauma screening
Abdominal pain or bleeding
Rh status if indicated
Imaging principles
Radiographs acceptable with shielding when possible
CT only when management changing and necessary
Analgesia considerations
Acetaminophen preferred
NSAID avoidance in later pregnancy context
Disposition modifiers
Lower threshold for observation if significant trauma mechanism
Obstetric consultation triggers
Geriatric
Fragility injury context
Low energy fall mechanism
Osteoporosis risk
Management considerations
Skin fragility and pressure injury prevention in splints
Opioid delirium risk
Lowest effective dose
Constipation plan
Follow-up reliability assessment
Higher admission threshold if unsafe home situation
Pediatrics
Growth plate and ossification considerations
Normal ossification centers mimic fragments
Comparison views when uncertain
Injury pattern data
Medial epicondyle fractures comprise 11% to 20% of pediatric elbow fractures
Elbow dislocation association range 30% to 60%
Ulnar neuropathy can occur in up to 6% of cases
Nonaccidental trauma considerations
Mechanism inconsistent with developmental stage
Multiple injuries or concerning history
Background
Epidemiology
Frequency
Pediatric elbow fractures account for about 10% of childhood fractures
Medial epicondyle fractures comprise 11% to 20% of pediatric elbow fractures
Demographics
Peak age 9 to 14 years for medial epicondyle fractures
Male predominance reported in pediatric medial epicondyle fractures
Associated injuries
Elbow dislocation associated in 30% to 60% of medial epicondyle fractures
Pathophysiology
Mechanism mapping
Valgus load avulsion at medial epicondyle
Flexor pronator mass traction
UCL traction
Dislocation related avulsion
Fragment displacement during dislocation
Incarceration within joint after spontaneous reduction
Anatomic risk structures
Ulnar nerve proximity medially
UCL attachment at medial epicondyle
Articular surface risk with lateral condyle fractures
Therapeutic Considerations
Nonoperative versus operative decision drivers
Absolute operative indications commonly cited
Incarcerated fragment in joint
Open fracture
Ulnar nerve entrapment or persistent deficit
Gross valgus instability
Relative operative considerations
High demand throwing athlete
Significant displacement with functional goals
Symptomatic nonunion risk context
Displacement measurement limitations
Displacement thresholds used in practice range 2 to 15 mm
Plain film displacement measurement reliability is limited
Imaging decision support
Elbow extension test fracture detection performance
Sensitivity 96.8%
Specificity 48.5%
Adults negative test fracture risk 1.6%
Children negative test fracture risk 4.2%
Patient Discharge Instructions
copy discharge instructions
Discharge bundle
Splint care
Keep splint clean and dry
Do not insert objects to scratch
Swelling control
Elevation above heart as much as possible for 48 to 72 hours
Ice 15 to 20 minutes at a time with barrier
Pain plan
Acetaminophen scheduled option
Ibuprofen scheduled option if allowed
Opioid only if prescribed and as directed
Activity limits
Sling use for comfort
No sports, throwing, or heavy lifting until cleared
Return to ED now
Increasing pain not relieved by meds
New numbness or weakness in hand
Fingers cold, pale, or blue
Splint feels too tight with increasing swelling
Worsening swelling or inability to move fingers
Fever or wound drainage
Follow-up
Orthopedics appointment timing as instructed
Return for repeat x-ray if pain persists or worsens
References
Evidence-based sources and guidance
Core evidence and accuracy data
Appelboam et al BMJ 2008 elbow extension test sensitivity 96.8% specificity 48.5%
AAFP summary of elbow extension test negative predictive values adults 98.4% children 95.8%
Pediatric medial epicondyle epidemiology and association
Jeong et al 2022 medial epicondyle fractures 11% to 20% of pediatric elbow fractures and dislocation 30% to 60%
POSNA study guide medial epicondyle fractures dislocation association and incarceration risk
Practice variability and displacement thresholds
Acta Orthopaedica Belgica 2022 displacement thresholds reported 2 to 15 mm and measurement variability concerns
Barghi et al 2025 review management trends and operative indications for pediatric medial epicondyle fractures
Pediatric elbow fracture general background
AAOS OrthoInfo elbow fractures in children about 10% of childhood fractures
Procedural sedation guidance for ED reductions
ABEM Key Advances adult procedural sedation updated July 2025
Miller et al 2019 clinical practice guideline for ED propofol sedation
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