Scaphoid Fat Stripe Sign: Is It a Reliable Radiological Sign of Scaphoid Fracture in Children?

Area of Science:

• Radiology
• Pediatric Orthopedics
• Skeletal Imaging

Background:

• The scaphoid fat pad stripe (SFS) is a radiological sign indicating potential scaphoid injury.
• Obliteration of the SFS is associated with acute fractures of the scaphoid and surrounding wrist structures.
• Accurate diagnosis of pediatric scaphoid fractures is crucial to prevent complications.

Purpose of the Study:

• To evaluate the diagnostic utility of the scaphoid fat pad stripe (SFS) sign in pediatric patients with suspected scaphoid fractures.
• To determine the sensitivity, specificity, and predictive values of the SFS sign in diagnosing occult scaphoid fractures in children.

Main Methods:

• Retrospective, monocentric study of pediatric patients with suspected scaphoid fractures.
• Blind review of initial X-rays by a pediatric orthopedic surgeon to assess for SFS abnormality and fracture lines.
• Comparison of initial X-ray findings with CT and MRI reports.

Main Results:

• The scaphoid fat pad stripe (SFS) sign demonstrated 86% sensitivity and 58% specificity in diagnosing scaphoid fractures.
• The negative predictive value of the SFS sign was 92% in the pediatric cohort.
• Abnormal SFS was noted in patients with confirmed scaphoid fractures on advanced imaging.

Conclusions:

• The scaphoid fat pad stripe (SFS) sign is a valuable adjunct in diagnosing occult scaphoid fractures in pediatric populations.
• The high negative predictive value of the SFS sign may help exclude scaphoid fractures, potentially reducing unnecessary immobilization and healthcare expenses.
• Further validation in larger studies is recommended to solidify the role of the SFS sign in pediatric wrist imaging.