©The Author(s) 2017. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Radiol. Sep 28, 2017; 9(9): 359-364
Published online Sep 28, 2017. doi: 10.4329/wjr.v9.i9.359
Published online Sep 28, 2017. doi: 10.4329/wjr.v9.i9.359
Reliability of the pronator quadratus fat pad sign to predict the severity of distal radius fractures
Julia Loesaus, Isabel Wobbe, Erik Stahlberg, Joerg Barkhausen, Jan Peter Goltz, Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
Author contributions: Loesaus J and Goltz JP contributed to study conception and design; Loesaus J and Goltz JP contributed to acquisition of data; Loesaus J and Stahlberg E contributed to analysis and interpretation of data; Loesaus J and Goltz JP contributed to drafting of manuscript; Wobbe I and Barkhausen J contributed to critical revision.
Institutional review board statement: This study was reviewed and approved by the University Hospital of Schleswig-Holstein.
Informed consent statement: All study participants, or their legal guardian, provided informed written consent prior to study enrollment.
Conflict-of-interest statement: The authors certify that they have no affiliations with or involvement in any organization or entity wwith any financial interest, or any non-financial interest in the subject matter or materials discussed in this manuscript.
Data sharing statement: Thchinical ppendix, statistical code, and dataset available from the corresponding author at j.loesaus@gmail.com. Participants gave informed consent for data sharing.
Correspondence to: Julia Loesaus, MD, Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany. loesausj@klifue.de
Telephone: +49-451-50017001 Fax: +49-451-50017004
Received: January 19, 2017
Peer-review started: January 20, 2017
First decision: May 22, 2017
Revised: June 26, 2017
Accepted: July 14, 2017
Article in press: July 17, 2017
Published online: September 28, 2017
Processing time: 266 Days and 7.3 Hours
Peer-review started: January 20, 2017
First decision: May 22, 2017
Revised: June 26, 2017
Accepted: July 14, 2017
Article in press: July 17, 2017
Published online: September 28, 2017
Processing time: 266 Days and 7.3 Hours
Core Tip
Core tip: This study evaluated reliability of pronator quadratus fat pad sign (PQS) to detect distal radius fracture and to predict its severity. Therefore correlation of measurements of pronator quadratus complex (PQC) on conventional lateral radiographs (CR) and sagittal reconstructions of computed tomographies (CT), also regarding the severity of fractures were analyzed. In conclusion PQC thickness can reliably be measured on lateral CR and correlates with CT. Sensitivity of PQS for detecting fractures is low, but specificity is high. Therefore a positive PQS in putative negative radiograph should trigger further investigations, e.g., CT scan. PQC thickness cannot predict severity of wrist fractures.