METHODS: Decompression of the PIN with the release of the arcade of Frohse was performed with resection of the radial head and the ganglion cyst. By 6 months postoperatively, the patient had a complete neurological recovery.
CONCLUSIONS: This case illustrates a previously unreported cause of extraneural compression of the PIN from a pseudarthrosis. The mechanism for compression in this case from the radial head pseudarthrosis is likely attributable to the sandwich effect, in which the PIN is sandwiched between the arcade of Frohse at the supinator from above and the cyst below.
方法:通过切除radial头和神经节囊肿,在释放Frohse拱廊的同时对PIN进行减压。术后6个月,患者的神经系统完全恢复.
结论:该病例说明了一个以前未报告的由假关节引起的PIN神经外压迫的原因。在这种情况下,桡骨头假关节的压缩机制可能归因于三明治效应,其中PIN夹在上方的Frohse拱廊和下方的囊肿之间。