Innsbruck Medical University, Department of Radiology, Anichstrasse 35, 6020, Innsbruck, Austria.
Muscle Nerve. 2014 Jan;49(1):35-9. doi: 10.1002/mus.23867. Epub 2013 Sep 20.
Posterior interosseous nerve (PIN) syndrome is a rare compression neuropathy of the PIN in the region of the supinator muscle, most common by the arcade of Frohse. We aimed to specify ultrasonographic findings in patients with PIN syndrome in comparison to healthy volunteers.
Ultrasound images and clinical data of 13 patients with PIN syndrome confirmed by neurological examination and electrophysiological testing were evaluated retrospectively. Anteroposterior nerve diameters measured at the arcade of Frohse were compared with those of 20 healthy volunteers. The echotexture and the presence of a caliber change of the PIN were additionally assessed.
Enlargement of the PIN was seen in all patients with PIN syndrome, but not in volunteers (statistically significant difference in mean diameter P < 0.05). Furthermore, edema and caliber change of the PIN were present in all patients.
High-resolution ultrasound allows for differentiation between patients with PIN syndrome and healthy volunteers.
骨间后神经（PIN）综合征是一种罕见的旋后肌区域 PIN 压迫性神经病，最常见于 Frohse 弓。我们旨在比较 PIN 综合征患者与健康志愿者的超声表现。
回顾性评估了 13 例经神经检查和电生理检查证实的 PIN 综合征患者的超声图像和临床资料。在 Frohse 弓处测量的前-后神经直径与 20 名健康志愿者进行比较。另外评估了 PIN 的回声纹理和口径变化。
所有 PIN 综合征患者的 PIN 均增大，但健康志愿者没有（平均直径的统计学差异 P<0.05）。此外，所有患者的 PIN 均有水肿和口径变化。
高分辨率超声可区分 PIN 综合征患者和健康志愿者。
