What is the appropriate reduction technique and post‑reduction care for a 1‑ to 4‑year‑old child with nursemaid elbow (radial head subluxation)?

Nursemaid Elbow: Reduction Technique and Post-Reduction Care

For children aged 1-4 years with nursemaid elbow, perform hyperpronation as the first-line reduction technique without obtaining radiographs, and discharge immediately after successful reduction with simple reassurance—no immobilization is needed.

Reduction Technique

Hyperpronation is Superior to Supination-Flexion

The hyperpronation technique should be your primary maneuver. Meta-analysis demonstrates hyperpronation achieves an 85-96% first-attempt success rate compared to only 53-68% for supination-flexion 12. The number needed to treat is 4 patients, meaning for every 4 children treated with hyperpronation instead of supination-flexion, one additional successful reduction is achieved 1.

Technique specifics:

• Hyperpronation involves forcefully pronating the forearm while stabilizing the elbow
• This is a simple, single-movement technique 3
• If the first attempt fails, repeat hyperpronation a second time (50% success on second attempt) 3
• Only if hyperpronation fails twice should you switch to supination-flexion as a crossover technique 3

Pain Considerations

Both techniques produce similar pain levels, so the superior success rate of hyperpronation makes it the clear choice 2. Pain assessment is not a differentiating factor between techniques.

Imaging Decisions

Radiographs Are Usually Not Indicated

Nursemaid elbow is a clinical diagnosis that does not require radiographic confirmation 4. In a large cohort of 88,466 cases, radiographs were performed in only 28.5% of visits, and missed fractures occurred in just 0.3% of cases 4.

When to obtain radiographs BEFORE reduction attempts:

• Non-ambulatory infants (under 1 year): Nursemaid elbow is uncommon in this age group, and fractures mimicking the presentation are more likely, including potential non-accidental trauma 5
• Children older than 6 years: This age group has 2.3 times higher odds of having a missed fracture 4
• Atypical mechanism (not the classic pulling injury)
• Point tenderness over bone rather than just refusal to use the arm
• Visible deformity or swelling

Post-Reduction Imaging

No radiographs are needed after successful reduction. Success is confirmed clinically when the child resumes normal use of the affected arm, typically within minutes.

Post-Reduction Care

Immediate Discharge Protocol

After successful reduction, immediate discharge is appropriate with the following guidance:

• No immobilization required: No sling, splint, or cast is necessary
• Expected recovery: The child should resume normal arm use within 5-15 minutes of successful reduction
• Activity: No restrictions needed; the child can return to normal activities immediately
• Recurrence counseling: Parents should avoid pulling or yanking the child by the hand or wrist, as recurrence rates can be significant

Return Precautions

Instruct parents to return if:

• The child does not resume normal arm use within 30 minutes
• Pain worsens or persists beyond a few hours
• New swelling or deformity develops

Critical Pitfalls to Avoid

Do not obtain radiographs reflexively in typical presentations (ages 1-4 years, classic pulling mechanism, no point tenderness). The 28.5% radiography rate represents overutilization given the 0.3% missed fracture rate 4.

Do not assume nursemaid elbow in non-ambulatory infants—these cases warrant radiographic evaluation before manipulation due to higher fracture risk and concern for non-accidental trauma 5.

Do not start with supination-flexion as your primary technique—the evidence clearly favors hyperpronation for first-attempt success 312.

Do not immobilize after successful reduction—this adds no benefit and may unnecessarily alarm parents or restrict the child's activities.