Guyon's Canal Lipoma Causing Ulnar Neuropathy

Bui-Mansfield, Liem T.; Williamson, Morgan; Wheeler, Darren; Johnstone, F. R. C.

doi:10.2214/ajr.178.6.1781458

Cited by 27 publications

(10 citation statements)

References 4 publications

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“…Different types of lesions cause ulnar nerve entrapment at wrist and hand including a ganglion, traumatic neuritis, ulnar artery disease and factures of carpal bones. However, other lesions such as lipomas, anomalous muscles, osteoarthritis and lesions of ulnar artery can cause ulnar nerve compression (1,4,7,16).…”

Section: Discussionmentioning

confidence: 99%

“…The most common etiological factor is the compression of the ulnar nerve at the wrist by a ganglion. However, other conditions such as anomalous musculotendinous arches, lipomas, diseases of the ulnar artery, fractures of the hamate, direct trauma to the ulnar side of the hand, and activities with prolonged wrist hyperextension and occupational trauma may compress the ulnar nerve at wrist (4,7,15,16). Unlike Guyon's canal syndrome compression of the median nerve at the wrist or carpal tunnel syndrome (CTS) is the most common nerve entrapment of the upper extremity with a prevalence of 5-16 % in the general population (17).…”

Section: Introductionmentioning

confidence: 99%

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Ulnar nerve entrapment in guyon's canal due to recurrent carpal tunnel syndrome: case report

Özdemir

Calisaneller²,

Gülşen³

et al. 2010

Turkish Neurosurgery

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Guyon's canal syndrome is a compression neuropathy of the ulnar nerve entrapment at the wrist. Compression of the ulnar nerve at the wrist by a ganglion, lipomas, diseases of the ulnar artery, fractures of the hamate and trauma are common etiologcal factors. Unlike Guyon's canal syndrome, carpal tunnel syndrome (CTS) is the most common nerve entrapment of the upper extremity. Although, open (OCTR) or endoscopic carpal tunnel release (ECTR) is highly effective in relieving pain, failure with carpal tunnel release is seldom seen. In this paper, we presented a patient with ulnar nerve entrapment associated with recurrent CTS and discussed the possible pathomechanism with a review of current literature. KeywOrds: Guyon's canal, Recurrent carpal tunnel syndrome, Ulnar nerve, Median nerve ÖZGuyon kanalı sendromu ulnar, sinirin el bileğindeki basısına bağlı olarak gelişen bir tuzak nöropatisidir. Bası sebepleri arasında ganglion, lipom, ulnar arter hastalıkları, hamat kırıkları ve travma yaygın olarak bulunur. Karpal tünel sendromu ise üst ekstremitelerin en sık izlenen sinir tuzaklanmasıdır. Açık ya da endoskopik olarak yapılan karpal tünel serbestleştirilmesi ağrıyı azaltmada oldukça etkili olsa da, serbestleştirmede başarısız sonuçlar da nadir olarak izlenmektedir. Bu yazıda, rekürren karpal tünel sendromu ile birlikte gelişen bir ulnar sinir tuzaklanmasını sunduk ve olası patomekanizmayı literatür eşliğinde tartıştık.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ulnar nerve entrapment in guyon's canal due to recurrent carpal tunnel syndrome: case report

Özdemir

Calisaneller²,

Gülşen³

et al. 2010

Turkish Neurosurgery

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“…The clinical importance of this tunnel is that it may become the site of ulnar nerve compression. The causes of such compression include: space-occupying lesions, such as ganglion, lipoma, uremic tumoral calcinosis, trauma, and anatomic muscular variants, such as abductor digiti minimi coursing through this canal [63][64][65]. Vascular abnormalities, such as aneurysm and thrombosis of the ulnar artery due to repeated trauma (e.g., bicycle riding, judo, tennis), can result in an ulnar nerve abnormality called "hypothenar hammer syndrome" [66].…”

Section: Guyon's Canal Syndromementioning

confidence: 99%

Role of magnetic resonance imaging in entrapment and compressive neuropathy—what, where, and how to see the peripheral nerves on the musculoskeletal magnetic resonance image: part 2. Upper extremity

et al. 2006

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The diagnosis of nerve entrapment and compressive neuropathy has been traditionally based on the clinical and electrodiagnostic examinations. As a result of improvements in the magnetic resonance (MR) imaging modality, it plays not only a fundamental role in the detection of space-occupying lesions, but also a compensatory role in clinically and electrodiagnostically inconclusive cases. Although ultrasound has undergone further development in the past decades and shows high resolution capabilities, it has inherent limitations due to its operator dependency. We review the course of normal peripheral nerves, as well as various clinical demonstrations and pathological features of compressed and entrapped nerves in the upper extremities on MR imaging, according to the nerves involved. The common sites of nerve entrapment of the upper extremity are as follows: the brachial plexus of the thoracic outlet; axillary nerve of the quadrilateral space; radial nerve of the radial tunnel; ulnar nerve of the cubital tunnel and Guyon's canal; median nerve of the pronator syndrome, anterior interosseous nerve syndrome, and carpal tunnel syndrome. Although MR imaging can depict the peripheral nerves in the extremities effectively, radiologists should be familiar with nerve pathways, common sites of nerve compression, and common space-occupying lesions resulting in nerve compression in MR imaging.

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“…(2000) [3]Yes T 1 and T 2 -weighted MRI axial reconstructionYesBui-Mansfield et al . (2002) [4]Yes T 1 -weighted MRI axial and coronal reconstructionsYesGruber and Towfigh (2002) [5]Yes T 1 -weighted MRI sagittal and coronal reconstructionsYesRohila et al . (2009) [6]Yes T 1 - and T 2 -weighted MRI and SITR (coronal and axial imaging reconstruction)Yes…”

Section: Discussionmentioning

confidence: 99%

Ulnar nerve compression in Guyon's canal: MRI does not always have the answer

Paget

Patel

Manushakian

2013

Journal of Surgical Case Reports

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Lipoma is a rare cause of ulnar nerve compression in Guyon's canal. All four previously reported cases from 2000 to 2009 have been accurately diagnosed on MRI. We present a case report where the MRI and surgical findings differed and a summary of the previous cases in the literature. We conclude that although MRI remains the best investigation for this condition, it is not always accurate and clinical findings still provide the best basis for surgical treatment.

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Guyon's Canal Lipoma Causing Ulnar Neuropathy

Cited by 27 publications

References 4 publications

Ulnar nerve entrapment in guyon's canal due to recurrent carpal tunnel syndrome: case report

Ulnar nerve entrapment in guyon's canal due to recurrent carpal tunnel syndrome: case report

Role of magnetic resonance imaging in entrapment and compressive neuropathy—what, where, and how to see the peripheral nerves on the musculoskeletal magnetic resonance image: part 2. Upper extremity

Ulnar nerve compression in Guyon's canal: MRI does not always have the answer

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