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Case Reports
. 2015 Nov 16;45(6):623-6.
doi: 10.1016/S2255-4971(15)30314-1. eCollection 2010 Nov-Dec.

GUYON'S CANAL SYNDROME DUE TO A SYNOVIAL CYST

Evandro Silva Ruas  1 , Rodrigo Simões Castilho  2 , Philipe Eduardo Carvalho Maia  2 , Gustavus Lemos Ribeiro Melo  2
Affiliations
Case Reports

GUYON'S CANAL SYNDROME DUE TO A SYNOVIAL CYST

Evandro Silva Ruas et al. Rev Bras Ortop. .

Abstract

We present a case of Guyon's canal syndrome caused by a synovial cyst within the left wrist of a 48-year-old female patient. The patient presented pain and paresthesia in the region of the ulnar nerve, with loss of muscle strength and left-hand deformity. Electroneuromyography showed a compression of the ulnar nerve at the wrist level. Surgical decompression of the nerve at Guyon's canal with resection of the cyst was performed. After the surgery, the patient presented an improvement in the pain and paresthesia, as well as an increase in muscle trophism and correction of the deformity.

Keywords: Nerve Compression; Synovial Cyst; Ulnar Nerve; Ulnar Nerve Compression Syndromes.

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Figures

Figure 1
Figure 1
Appearance of the patient's left hand before the operation. Note the hypotrophy of the hypothenar region and interosseous musculature, along with the claw deformity of the fourth and fifth fingers. To the left: the markings for the surgical incision in the volar region.
Figure 2
Figure 2
View of the ulnar nerve on its path, with the synovial cyst protruding in its floor.
Figure 3
Figure 3
View of the synovial cyst in Guyon's canal, after separation of the ulnar nerve radially.
Figure 4
Figure 4
The orthosis for correcting the cubital claw, positioned on the patient's hand. Note the flexion of the metacarpophalangeal joints of the fourth and fifth fingers and the adduction of the fifth finger.
Figure 5
Figure 5
Left hand of the patient 14 months after the surgery. Note the diminution of the hypotrophy of the intrinsic musculature and the recovery of the movement of the fingers, with the exception of the fifth finger.
See this image and copyright information in PMC

References

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