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Blunt Finger Injury with Swelling — Pediatric (3-Year-Old): Management

Initial Assessment

History

• Mechanism (crush, jamming, axial load, door injury)
• Time of injury
• Dominant hand
• Tetanus status
• Neurovascular symptoms (numbness, color change)

Physical Exam

• Swelling, tenderness, ecchymosis — location (IP joints, MCP, physis)
• ROM — active and passive
• Rotational deformity — check cascade of fingers in flexion
• Neurovascular status — capillary refill, sensation (2-point discrimination unreliable at age 3, so observe grip/withdrawal)
• Skin integrity — open wound overlying a physis = Seymour fracture until proven otherwise

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Imaging

• X-ray (AP, lateral, oblique) of the involved finger — mandatory
• In a 3-year-old, physes are open; Salter-Harris fractures are common and may look subtle
• Comparison views of the contralateral hand may help
• Low threshold for splinting even with "negative" X-ray in skeletally immature patients — physeal injuries may not be radiographically apparent

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Key Pediatric-Specific Fracture Patterns

Salter-Harris Classification (critical in this age group)

Seymour Fracture (high alert in toddlers)

• Salter-Harris I or II of the distal phalanx with nail bed injury / nail avulsion
• Open fracture (germinal matrix interposed) — treat as open fracture
• Management:
  • Irrigation and debridement
  • Nail replacement or nail bed repair
  • Splinting with finger in slight flexion
  • IV/oral antibiotics (covers Staph/Strep + gram-negatives)
  • Urgent hand surgery consult

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General Management by Injury Type

Soft Tissue Injury / Contusion (no fracture)

• Rest, Ice, Elevation (RICE)
• Buddy taping to adjacent finger for comfort (dynamic splinting)
• Oral analgesics (ibuprofen/paracetamol, weight-based)
• Review in 5–7 days

Stable Phalanx Fracture (non-displaced, SH I or II)

• Aluminum foam splint or gutter splint in position of safety:
  • Wrist extended ~30°
  • MCP flexed ~70–90°
  • PIP/DIP near extension
• Duration: 3–4 weeks
• Follow-up X-ray at 1 week to confirm alignment
• Orthopedics or pediatric hand clinic follow-up

Distal Phalanx Fracture (tuft / crush)

• Fingertip splint or stack splint
• Check subungual hematoma — if >50% nail area, consider nail removal and nail bed repair under digital block
• Antibiotics if open
• Duration: 2–3 weeks

Middle / Proximal Phalanx Fracture (displaced)

• Radial or ulnar gutter splint depending on digit
• Closed reduction under digital/hematoma block if displaced
  • Reduction held with buddy strapping post-splint
• Unstable/irreducible → urgent orthopedic referral for K-wire fixation

MCP Joint Injury

• Splint in position of safety (MCP 70–90° flexion)
• Assess for ligament injury (ulnar collateral most common in thumb)

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Splint Selection Quick Reference

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Referral Criteria (to Pediatric Hand Surgery / Orthopedics)

• Open fractures (including Seymour fracture)
• Salter-Harris III, IV, V
• Displaced fractures not reducible by closed means
• Rotational deformity
• Intra-articular fractures
• Vascular compromise

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Analgesia

• Ibuprofen 10 mg/kg/dose q6–8h (preferred anti-inflammatory)
• Paracetamol 15 mg/kg/dose q4–6h (can alternate)
• Digital nerve block (dorsal approach preferred in children) for procedural pain (reduction, nail repair)

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Key Pitfalls in Toddlers

• Physeal fractures look normal — splint if clinical suspicion high
• Seymour fracture easily missed — always inspect the nail and periungual tissue
• Child may not localize pain precisely — examine entire hand
• Growth arrest possible with SH III–V injuries — counsel parents on long-term follow-up

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