Ulnar nerve injuries in guyon canal: A report of 32 cases

Kokkalis, Zinon T.; Efstathopoulos, D.; Papanastassiou, Ioannis D.; Sarlikiotis, Thomas; Papagelopoulos, Panayiotis J.

doi:10.1002/micr.21951

Cited by 6 publications

(7 citation statements)

References 29 publications

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“…43 In general, more proximal injuries do worse, as do repairs requiring nerve grafts and those done in a delayed fashion. 44,45 Kim and colleagues, 25 in a study of 654 ulnar nerve lesions, have shown that functional recovery of grade M3 or better motor recovery is greatest when the injury requires only neurolysis (92% of patients), followed by primary repair (72% of patients), and then those injuries requiring nerve grafting (67% of patients). Ruijs and colleagues, 44 in their meta-analysis of 23 publications, found that ulnar nerve injuries gave a 71% lower chance of motor recovery than median nerve injuries.…”

Section: Diagnosismentioning

confidence: 96%

Management of Ulnar Nerve Injuries

Woo,

Bakri,

Moran

2015

The Journal of Hand Surgery

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Section: Diagnosismentioning

confidence: 96%

Management of Ulnar Nerve Injuries

Woo,

Bakri,

Moran

2015

The Journal of Hand Surgery

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“…Electrodiagnostic changes of the ulnar nerve have been reported in numerous case reports throughout the literature. 2,4,6,27 However, these studies are retrospective, and some have incompletely evaluated the ulnar nerve. Although many studies evaluated motor function to ADM, fewer studies report analyzing the deeper motor branch of the ulnar nerve to FDI.…”

Section: Electrodiagnostic Studiesmentioning

confidence: 99%

“…1 Since then, there have been numerous case reports describing this phenomenon, some of which refer to this condition as "handlebar palsy." [2][3][4][5] For the purposes of this article, we consider these terms interchangeable.…”

mentioning

confidence: 99%

The Physiatrist’s Guide to Cyclist Palsy: A Narrative Review

Farag

Sherwood

Kuwabara

et al. 2022

Am J Phys Med Rehabil

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: Ulnar neuropathy at the wrist is a common consequence of long-duration cycling, a condition termed “cyclist palsy.” Although cyclist palsy has been clinically well described in the literature, a gap exists regarding its electrodiagnostic evaluation and management. Patients with cyclist palsy present with a wide variety of sensory or motor impairments, depending on the location of the lesion. Electrodiagnostic studies are essential for accurate localization, with studies suggesting that pure motor lesions sparing the hypothenar muscles are most common among cyclists. This article aims to provide the electromyographer and physiatrist with a clinical approach to cyclist palsy and management strategies, including patient education, equipment changes, and alterations to bicycle fit.To Claim CME CreditsComplete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCMECME ObjectivesAt the conclusion of this educational module, participants will be able to: (1) Describe the possible clinical presentations of Cyclist Palsy based on Ulnar nerve anatomy in the wrist and hand; (2) State the cycling-related risk factors for Cyclist Palsy; and (3) Outline the principles in management for Cyclist Palsy.LevelAdvancedAccreditationThe Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.The Association of Academic Physiatrists designates this Journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit(s)™. Physicians should only claim credit commensurate with the extent of their participation in the activity.

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“…A positive Froment sign, characterized by interphalangeal flexion when a patient attempts to pinch a thin object, also demonstrates weakness in these muscles, and the flexor pollicis longus compensates for the weakened muscles. 35 Inability to cross the index and middle fingers may indicate deficient deep ulnar motor innervation of the first palmar and second dorsal interossei. Because the hypothenar muscles receive motor innervation at the origin of the deep motor branch of the ulnar nerve, 3 intact function in these muscles combined with weakness of the interosseous and adductor pollicis muscles indicates a lesion distal to the deep motor branch.…”

Section: Motor Examinationmentioning

confidence: 99%

“…Therefore, surgeons must be aware of the arborization patterns of the ulnar nerve to be prepared when anomalous anatomic structures and varied vascular courses are encountered during dissection. 35 Surgeons should carefully preserve the vascular supply to the ulnar nerve 14 and avoid injury to nerve branches in the wrist. 2…”

Section: Complicationsmentioning

confidence: 99%

Ulnar Nerve Entrapment at the Wrist

Earp

Floyd

Louie

et al. 2014

Journal of the American Academy of Orthopaedic Surgeons

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Presentation of ulnar nerve entrapment at the wrist varies based on differential anatomy and the site or sites of compression. Therefore, an understanding of the anatomy of the Guyon canal is essential for diagnosis in patients presenting with motor and/or sensory deficits in the hand. The etiologies of ulnar nerve compression include soft-tissue tumors; repetitive or acute trauma; the presence of anomalous muscles and fibrous bands; arthritic, synovial, endocrine, and metabolic conditions; and iatrogenic injury. In addition to a thorough history and physical examination, which includes motor, sensory, and vascular assessments, imaging and electrodiagnostic studies facilitate the diagnosis of ulnar nerve lesions at the wrist. Nonsurgical management is appropriate for a distal compression lesion caused by repetitive activity, but surgical decompression is indicated if symptoms persist or worsen over 2 to 4 months.

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Ulnar nerve injuries in guyon canal: A report of 32 cases

Abstract: Early diagnosis and surgical treatment with careful dissection of the ulnar nerve branches within the canal is very important. Adequate exposure is usually required to repair the nerve in the Guyon canal. Nerve grafting in this level could give analogous results as the end-to-end repair.

Cited by 6 publications

References 29 publications

Management of Ulnar Nerve Injuries

Management of Ulnar Nerve Injuries

The Physiatrist’s Guide to Cyclist Palsy: A Narrative Review

Ulnar Nerve Entrapment at the Wrist

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