Ulnar nerve lesion at the wrist related to pisotriquetral joint arthropathy

Abstract

The diagnosis of UDMB lesion is especially difficult when CTS coexists, but CTS may allow for early diagnosis, if CB at the wrist is not overlooked. Chondrocalcinosis was responsible for the systemic inflammation, the CTS, the pisotriquetral joint effusion, and the UDBM compression, which has not been reported previously.

Influential factors of surgical decompression for ulnar nerve neuropathy in Guyon’s canal

“…2 Although there was not a large number of ulnar nerve neuropathy in Guyon's canal, there were some rare case reports in literature reviews. [12][13][14][15][16] Some studies estimated that 30% to 40% of ulnar nerve neuropathy in Guyon's canal was caused by ganglion cysts. 17 In this study, 7.9% of the case series resulted from ganglion cysts.…”

Ultrasound of the Ulnar Nerve: A Pictorial Review

“…Care was taken to apply the same transducer pressure on both sides to avoid false images related to excessive compression of the subcutaneous tissues. In pisotriquetral joint disorders, particularly osteoarthritis, joint effusion may irritate the UN or its branches at the canal [57][58][59] ; as can ganglion cysts. 60 These cysts may also arise from the triquetro-hamate joint or, more rarely, the ulnocarpal or other carpal joints.…”

“…In pisotriquetral joint disorders, particularly osteoarthritis, joint effusion may irritate the UN or its branches at the canal 57–59 ; as can ganglion cysts 60 . These cysts may also arise from the triquetro‐hamate joint or, more rarely, the ulnocarpal or other carpal joints 60,61 .…”

Ultrasound of the Hand and Wrist

“…47 Other measurements that can be directly obtained with sonography include the degree of palmar displacement of the median nerve with palmar displacement determined by measuring the distance from a line drawn between the trapezium and the hamate to the top of the flexor retinaculum. 54,55 47 Recently, the American Association of Neuromuscular and Electrodiagnostic Medicine performed a meta-analysis and summarized the recommendations for the use of neuromuscular ultrasound as an adjunct in the diagnosis of carpal tunnel syndrome.…”