Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome

Quadrilateral space syndrome (QSS) is a rare nerve entrapment disorder that occurs when the axillary nerve and posterior circumflex humeral artery (PCHA) become compressed in the quadrilateral space. QSS presents as vague posterolateral shoulder pain that is exacerbated upon the abduction and extern...

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Main Authors: Hamilton Chen, Vincent Reginald Narvaez
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Case Reports in Orthopedics
Online Access:http://dx.doi.org/10.1155/2015/378627
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author Hamilton Chen
Vincent Reginald Narvaez
author_facet Hamilton Chen
Vincent Reginald Narvaez
author_sort Hamilton Chen
collection DOAJ
description Quadrilateral space syndrome (QSS) is a rare nerve entrapment disorder that occurs when the axillary nerve and posterior circumflex humeral artery (PCHA) become compressed in the quadrilateral space. QSS presents as vague posterolateral shoulder pain that is exacerbated upon the abduction and external rotation of the shoulder. Diagnosis of QSS is difficult because of the vague presentation of QSS. In addition, even though MRI and MR angiography can be used in QSS diagnosis, there is currently no “gold standard” diagnostic imaging studies for QSS. In this case report, we describe a novel ultrasound-guided technique for a diagnostic quadrilateral space block and present a case where the diagnostic block was used to diagnose QSS. We believe that a diagnostic block of the quadrilateral space is a useful adjunct in the evaluation of patients with suspected QSS, especially in cases where examination findings and other diagnostic modalities are indeterminate.
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institution Kabale University
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publisher Wiley
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series Case Reports in Orthopedics
spelling doaj-art-797173aeade048bdb25699f8d46fb18a2025-02-03T06:07:36ZengWileyCase Reports in Orthopedics2090-67492090-67572015-01-01201510.1155/2015/378627378627Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral SyndromeHamilton Chen0Vincent Reginald Narvaez1University of California, Riverside School of Medicine, Riverside, CA 92507, USAUniversity of California, Riverside School of Medicine, Riverside, CA 92507, USAQuadrilateral space syndrome (QSS) is a rare nerve entrapment disorder that occurs when the axillary nerve and posterior circumflex humeral artery (PCHA) become compressed in the quadrilateral space. QSS presents as vague posterolateral shoulder pain that is exacerbated upon the abduction and external rotation of the shoulder. Diagnosis of QSS is difficult because of the vague presentation of QSS. In addition, even though MRI and MR angiography can be used in QSS diagnosis, there is currently no “gold standard” diagnostic imaging studies for QSS. In this case report, we describe a novel ultrasound-guided technique for a diagnostic quadrilateral space block and present a case where the diagnostic block was used to diagnose QSS. We believe that a diagnostic block of the quadrilateral space is a useful adjunct in the evaluation of patients with suspected QSS, especially in cases where examination findings and other diagnostic modalities are indeterminate.http://dx.doi.org/10.1155/2015/378627
spellingShingle Hamilton Chen
Vincent Reginald Narvaez
Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
Case Reports in Orthopedics
title Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
title_full Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
title_fullStr Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
title_full_unstemmed Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
title_short Ultrasound-Guided Quadrilateral Space Block for the Diagnosis of Quadrilateral Syndrome
title_sort ultrasound guided quadrilateral space block for the diagnosis of quadrilateral syndrome
url http://dx.doi.org/10.1155/2015/378627
work_keys_str_mv AT hamiltonchen ultrasoundguidedquadrilateralspaceblockforthediagnosisofquadrilateralsyndrome
AT vincentreginaldnarvaez ultrasoundguidedquadrilateralspaceblockforthediagnosisofquadrilateralsyndrome