Characteristics of dynamic magnetic resonance imaging of idiopathic severe frozen shoulder

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• 作者：Hideyuki Sasanuma ; MD ; PhD^a ; ^{sasakou@jichi.ac.jp} ; Hideharu Sugimoto ; MD ; PhD^b ; Akifumi Fujita ; MD ; PhD^b ; Yuji Kanaya ; MD^a ; Yuki Iijima ; MD ; PhD^a ; Toshihiro Saito ; MD^a ; Katsushi Takeshita ; MD ; PhD^a
• 关键词：Level IV ; Case Control Design ; Diagnostic Study
• 刊名：Journal of Shoulder and Elbow Surgery
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：26
• 期：2
• 页码：e52-e57
• 全文大小：780 K
• 卷排序：26

文摘

The purpose of this study was to evaluate the effectiveness of current techniques for dynamic 3-dimensional magnetic resonance imaging (MRI) in the diagnosis of idiopathic severe frozen shoulder (FS).Materials and methodsSubjects consisted of 5 healthy volunteers and 16 patients with idiopathic severe FS. We defined severe idiopathic FS as follows: range of motion ≤100° in forward flexion, ≤10° in external rotation, and ≤L5 in internal rotation. All patients suffered from continued global range of motion loss for at least 6 months. We evaluated the diagnostic characteristics of 3-dimensional dynamic MRI in FS patients compared with those in healthy volunteers.ResultsMRI of all FS patients displayed an abnormal intake of blood flow from the acromial arterial network and the branches of circumflex humeral arteries into the axillary pouch and the rotator interval. We named this finding “burning sign.” The burning sign was present at all phases of the condition. In the FS group, the patients with enhanced deposition of contrast medium in the axillary pouch in the delayed phase (n = 11) had a statistically significant score for pain during exercise, higher than that of patients with reduced deposition of contrast medium at the same site (n = 5; P = .027).ConclusionBurning sign is an abnormal finding that appears in dynamic MRI of severe FS. Hence, the burning sign may be associated with pain and inflammation in idiopathic FS.