Transient synovitis of the hip

Overview 
Theory 
Diagnosis 
Management 
Follow up 
Resources 

Last reviewed: 30 Sep 2024

Last updated: 06 Dec 2022

Transient synovitis of the hip is a self-limited inflammatory disorder of the hip that commonly affects young children between 2 and 12 years of age.

The most important differential diagnosis to exclude is septic arthritis of the hip.

More common in boys.

Presents acutely with mild to moderate hip pain and limp.

Treatment is supportive with activity restrictions and nonsteroidal anti-inflammatory drugs as needed.

Definition

Transient synovitis is a self-limited inflammatory disorder of the hip that commonly affects young children.

History and exam

Key diagnostic factors

limited movement
pain
limp
positive log roll

Full details

Other diagnostic factors

abducted and externally rotated hip
fever

Full details

Risk factors

2 to 12 years of age
male sex
history of recent viral illness

Full details

Diagnostic tests

1st tests to order

CBC
erythrocyte sedimentation rate
CRP
radiograph

Full details

Tests to consider

ultrasound
MRI with contrast

Full details

Treatment algorithm

ACUTE

all patients

Contributors

Authors

Ishaan Swarup, MD, FAAOS, FAAP

Assistant Professor of Clinical Orthopaedic Surgery

Director, Pediatric Orthopaedic Trauma

Associate Fellowship Director, Pediatric Orthopaedic Surgery

University of California

San Francisco

Disclosures

IS is the author of a reference cited in this topic.

Acknowledgements

Dr Ishaan Swarup would like to gratefully acknowledge Professor James McCarthy and Dr Jaime Denning, previous contributors to this topic.

Disclosures

JM is a board member for the Pediatric Orthopaedic Society of North America. He has given workshops at annual teaching meetings for DePuy Synthes, received royalties from Lippincott Williams & Wilkins for editing a book, and received grant and travel money from Nuvasive. JM has worked as a consultant for Nuvasive within the past 5 years, and frequently gives academic ground rounds lectures. JD declares that she has no competing interests.

Peer reviewers

Norm Otsuka, MD

Assistant Chief of Staff

Shriners Hospital for Children

Los Angeles

Disclosures

NO declares that he has no competing interests.

Michael Smith, MB, BChir, FRCS

Consultant Orthopaedic Surgeon

Department of Orthopaedics

Guy's & St Thomas' Hospital

London

Disclosures

MS declares that he has no competing interests.

Peter Cundy, MBBS, FRACS

Head of Orthopaedic Surgery

Women's & Children's Hospital

Adelaide

Australia

Disclosures

PC declares that he has no competing interests.

Differentials
- Septic arthritis
- Lyme arthritis
- Osteomyelitis
More Differentials
Guidelines
- ACR appropriateness criteria: acutely limping child up to age 5
More Guidelines
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Transient synovitis of the hip

Summary

Definition

History and exam

Key diagnostic factors

Other diagnostic factors

Risk factors

Diagnostic tests

1st tests to order

Tests to consider

Treatment algorithm

all patients

Contributors

Authors

Ishaan Swarup, MD, FAAOS, FAAP

Disclosures

Acknowledgements

Disclosures

Peer reviewers

Norm Otsuka, MD

Disclosures

Michael Smith, MB, BChir, FRCS

Disclosures

Peter Cundy, MBBS, FRACS

Disclosures

Differentials

Guidelines

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