Nursemaid's Elbow
Upper LimbOverview
Nursemaid's elbow is an acute subluxation of the radial head from the annular ligament, typically occurring in children aged 1-4 years following a sudden longitudinal traction force to the extended and pronated arm. This is the most common elbow injury in young children and often occurs from innocent activities such as swinging a child by the arms or lifting them abruptly. The condition is generally self-limiting but causes significant pain and functional loss until reduced.
Pathophysiology
The annular ligament in young children is proportionally looser and weaker than in older children, with the radial head being relatively smaller and cone-shaped. A sudden pulling force applied to an extended, pronated forearm causes the radial head to slip distally beneath the annular ligament. The radial neck becomes entrapped between the ligament and capitellum, preventing supination of the forearm. The ligament typically slips back over the radial head spontaneously or with gentle manual reduction, restoring normal anatomy. As the child matures, ligamentous strength increases and this injury becomes rare after age 5-6 years.
Patient Education
Nursemaid's elbow occurs from sudden pulling or lifting of your child's arm and typically resolves completely once reduced; avoid pulling motions to prevent recurrence, though most children outgrow susceptibility by age 5-6.
Typical Presentation
Site
Lateral elbow and proximal radioulnar joint; pain radiates along the dorsal forearm
Quality
Sharp, aching, or soreness in the lateral elbow; child often reports 'pin' sensation
Intensity
Moderate to severe pain causing immediate cessation of arm use; pain severity often exceeds apparent injury
Aggravating
Supination of the forearm (attempting to turn palm upward), flexion/extension of the elbow, any movement of the affected arm, palpation of the lateral elbow
Relieving
Complete immobility of the arm in a pronated position; rest; successful reduction dramatically relieves pain within minutes
Associated
Child holds arm slightly flexed and pronated (palm down), refuses to use affected arm (pseudo-paralysis), swelling is typically minimal or absent, no deformity is visible, child may guard the arm to avoid movement
Orthopaedic Tests
Test descriptions are written with AI assistance from standard clinical texts. Where a test lists Sources, its description has been checked against them; those sources are independent and do not endorse OsteoKit. Accuracy figures and grades (A–D) appear only when checked against the published study; tests without one are marked “No accuracy study”.
Further reading: full test procedures are described in standard clinical examination texts, e.g. Magee & Manske, Orthopedic Physical Assessment (7th ed.), and Cook & Hegedus, Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd ed.).
Reduction Manoeuvre (Diagnostic and Treatment)
Procedure
Performed only by a clinician trained in the technique, and only when there is no suspicion of fracture. Hold the elbow with a thumb over the radial head and turn the forearm firmly into pronation (hyperpronation), or into supination followed by flexion.
Positive Finding
A click felt over the radial head, and the child starts using the arm normally within a few minutes.
Interpretation
A successful reduction confirms the diagnosis. The hyperpronation method generally succeeds more often at the first attempt than supination–flexion. If the child is not using the arm after two attempts, or if there is any swelling or bruising, stop and refer for an X-ray.
Clinical Presentation and History
Procedure
Ask about the mechanism (a sudden pull on the child's hand or forearm, often lifting or swinging) and watch how the child holds and uses the arm.
Positive Finding
A child, usually aged 1–4, who suddenly stops using the arm after a pull, holding it slightly bent and turned palm down by the side, with little or no swelling.
Interpretation
A typical pull mechanism with this posture and no swelling or bruising strongly suggests radial head subluxation, and X-rays are usually not needed. A fall, swelling, bruising, marked tenderness or an unclear story needs an X-ray before any manipulation, as a supracondylar or other fracture must be excluded. Unexplained injuries in young children should also raise safeguarding concerns.
Pain on Forearm Rotation
Procedure
Support the child's elbow and very gently try to turn the forearm palm up, stopping at the first sign of pain.
Positive Finding
Pain or refusal when the forearm is turned palm up.
Interpretation
Painful, blocked supination fits radial head subluxation. It is not specific: fractures around the elbow also make rotation painful, so check the history and look for swelling first.
Observation of Arm Use
Procedure
Watch the child play, offering a toy or sticker above shoulder height and to the affected side.
Positive Finding
The child will not reach with the affected arm but uses the hand and fingers.
Interpretation
Typical of radial head subluxation. Return of normal reaching within minutes of a reduction confirms it. A child who still will not use the arm after a reduction attempt needs an X-ray.
Radial Head Palpation
Procedure
Palpate gently over the radial head on the outside of the elbow, and check the elbow and forearm for swelling, bruising and bony tenderness.
Positive Finding
Mild tenderness over the radial head, with no swelling or bruising.
Interpretation
Mild radial head tenderness without swelling fits subluxation. Swelling, bruising or tenderness over the lower humerus or other bones suggests a fracture and needs an X-ray before any manipulation.
⚠ Red Flags
- •Recurrent subluxations (>2-3 episodes) suggesting possible occult fracture or ligamentous insufficiency requiring imaging
- •Age >6 years at first presentation (unusual and warrants investigation for underlying pathology)
- •Evidence of neurovascular compromise (pale, cold hand, absent pulses, significant swelling)
- •Suspected abuse or non-accidental injury based on mechanism or behavioural indicators
- •Failure to reduce with standard technique or significant resistance to reduction
- •Systemic symptoms such as fever, rash, or malaise suggesting alternative diagnosis
⚡ Yellow Flags
- •Parental anxiety disproportionate to injury severity; excessive concern about permanent damage
- •Repeated episodes suggesting inadequate parental education about prevention
- •Overprotective parenting limiting normal developmental movement activities post-reduction
- •Psychosocial stressors in family context that may relate to mechanism of injury
- •Parental guilt or blame affecting child's confidence in using the arm post-reduction
Osteopathic Techniques
Refer first
A pulled elbow (radial head subluxation) is diagnosed clinically and treated by closed reduction, which takes seconds and needs no sedation; hyperpronation has a higher first-attempt success rate than supination–flexion and may hurt less. X-ray first if a fracture or dislocation is suspected, if there is swelling or deformity, if the mechanism was not a pull on the arm, or if non-accidental injury is a concern. Refer to a clinician trained in the reduction.
- Reference bookNardi & Schaefer · StatPearls 2023
Rehabilitation Exercises
Pronation-Supination in Flexion (Screw Driver Motion)
Elbow Flexion-Extension in Pronated Position
Gentle Pronator Stretch (Arm Across Body)
Supinator Stretch (Assisted Supination Hold)
Isometric Pronation Hold (Against Resistance)
Isometric Supination Hold (Against Resistance)
Wrist Extensor Strengthening (Light Resistance)
Forearm Pronator Strengthening (Resistance Band)
Scapular Stabilization Exercise (Wall Push-Up Position)
Reaching and Grasping Activities (Pronated Forearm)
Play-Based Arm Use Activities (Graduated Return to Play)
Upper Limb Weight-Bearing Activities (Quadruped Position)
Referral Criteria
- •Failure to achieve reduction with standard gentle techniques; may indicate occult fracture or alternative pathology requiring imaging
- •Recurrent subluxations (>2-3 episodes) despite parental education on prevention; consider orthopedic referral for imaging and possible underlying ligamentous laxity
- •Age >6 years at first presentation; unusual and warrants investigation by pediatric orthopedics for underlying skeletal or connective tissue disorder
- •Neurovascular compromise including absent radial pulse, significant swelling, severe discoloration, or signs of nerve involvement; refer urgently to emergency orthopedic care
- •Suspected non-accidental injury based on inconsistent history, delayed presentation, behavioral concerns, or child protection indicators; refer to appropriate child safeguarding authorities
- •Inadequate pain relief or functional recovery 2-4 weeks post-reduction despite conservative management; consider orthopedic reassessment for complications
- •Signs of infection, cellulitis, or systemic illness in association with the injury; refer to pediatric medicine or emergency department