keyword
MENU ▼
Read by QxMD icon Read
search

Guyon's Canal

keyword
https://www.readbyqxmd.com/read/28725506/an-aberrant-abductor-digiti-minimi-muscle-crossing-guyon-s-canal
#1
YongSeok Nam, SeungHwan Hwang, SuRak Eo
Anomalous hypothenar muscles in the wrist are relatively common with 47% prevalence, and their possible consequences associated with Guyon's canal are well known. The accessory of the abductor digiti minimi muscle (ADM) is known to be one of the causes of ulnar tunnel syndrome or ulnar artery thrombosis. A unique ADM was found in the volar wrist region of an 87-year-old male cadaver passing through Guyon's canal.
August 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28594495/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#2
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28584314/is-ulnar-nerve-entrapment-at-wrist-frequent-among-patients-with-carpal-tunnel-syndrome-occupationally-exposed-to-monotype-wrist-movements
#3
Magdalena Lewańska, Jolanta Walusiak-Skorupa
OBJECTIVES: Association between carpal tunnel syndrome (CTS) and ulnar nerve entrapment at wrist remains controversial. The aim of the study has been to investigate the prevalence of Guyon's canal syndrome amongst patients diagnosed with the CTS, occupationally exposed to repetitive wrist movements. MATERIAL AND METHODS: The retrospective analysis of 310 patients (268 females, 42 males) representing the mean age of 52±7 years old hospitalized for the suspected occupational CTS was performed...
December 30, 2016: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28438411/magnetic-resonance-imaging-of-the-digital-nerves-of-the-hand-anatomy-and-spectrum-of-pathology
#4
REVIEW
Charles H Mitchell, Laura M Fayad, Shivani Ahlawat
Digital nerves are intrinsic to the sensory and motor function of the hand. These nerves represent the terminal ramifications of the ulnar, median, and radial nerves and are located distal to the carpal tunnel and Guyon canal. With magnetic resonance imaging, traumatic and nontraumatic abnormalities of the digital nerves can be shown with high contrast as well as high spatial resolution. Digital nerve abnormalities are most commonly posttraumatic in nature; however, infection, inflammatory, vascular malformations, and neoplasms can rarely occur...
March 6, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28342818/intraneural-microcystic-lymphatic-malformation-of-the-ulnar-nerve-at-the-guyon-canal-unusual-cause-of-ulnar-pain-in-a-child
#5
I González Pérez, F Corella Montoya, I Casado Fariñas
We present a case of an unusual cause of ulnar pain on a 9-year-old patient. The patient had pain on the ulnar side of the wrist after a fall. MRI showed a poorly defined lesion on the ulnar nerve at Guyon's canal. The initial diagnosis was traumatic neuropathy. Following conservative treatment of symptoms for one year, the pain started again. Therefore, a new MRI was performed where progression of the lesion was observed. Excision of the lesion was performed and the specimen sent for pathologic analysis. The diagnosis was of microcystic lymphatic malformation...
June 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28012095/anatomical-variability-and-histological-structure-of-the-ulnar-nerve-in-the-guyon-s-canal
#6
Paweł Depukat, Brandon Michael Henry, Patrick Popieluszko, Joyeeta Roy, Ewa Mizia, Tomasz Konopka, Krzysztof A Tomaszewski, Jerzy A Walocha
OBJECTIVES: The goal of our study was to analyze the prevalence of variations, branching patterns, and histology of the ulnar nerve (UN) in Guyon's canal to address its importance in hand surgery, particularly decompression of the UN. METHODS: Fifty fresh cadavers were dissected bilaterally, and the nerve in the area of Guyon's canal was visualized. Samples for histology were also taken and prepared. The collected data were then analyzed. RESULTS: Morphometric measurements of the hands and histological studies were not found to have significant differences when compared by left or right side or by sex...
February 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27902538/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#7
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
January 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27843038/hypothenar-hammer-syndrome-a-case-report
#8
I Jiménez, F Manguila, M Dury
Hypothenar hammer syndrome is an uncommon injury of the ulnar artery in its passage through Guyon's canal, and has been associated with repetitive trauma. Its diagnosis requires of a high level of suspicion and a careful clinical interview. The appropriate treatment is not well defined in the literature, ranging widely from medical treatment to reconstructive surgery. A clinical case is presented of a 52 year-old healthy male, who presented with numbness of his fourth and fifth fingers after a trauma at the hypothenar eminence...
November 11, 2016: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/27727416/hammarsjuka-%C3%A3-r-ovanligt-%C3%A2-eller-bara-ett-ovanligt-f%C3%A3-rbisett-tillst%C3%A3-nd-effektiv-behandling-finns-%C3%A2-sk%C3%A3-rpt-differentialdiagnostik-%C3%A3-r-motiverad
#9
REVIEW
Anders Seldén, Fatin Hermiz, Bengt Östlund
Hypothenar hammer syndrome is a possibly underdiagnosed but treatable cause of Raynaud's phenomenon and hand ischemia elicited by thombosis or aneurysm secondary to acute or chronic blunt trauma to the ulnar artery at the level of Guyon's canal. This paper provides a summary of the condition with some emphasis on prophylactic and therapeutic aspects.
October 7, 2016: Läkartidningen
https://www.readbyqxmd.com/read/27685508/anomalous-abductor-digiti-minimi-in-guyon-canal-a-cadaver-study
#10
Mario James Ciani, Vicki LaFay, Gioia Ciani, Paul Carey, Nata Parnes
A routine cadaver dissection revealed a noteworthy anomalous muscle in the distal anterior forearm. Clinicians should be aware of this finding and consider it as a differential diagnosis in patients with wrist disorders such as ulnar tunnel syndrome from occlusion of the ulnar canal. A space-occupying lesion, such as the anomalous muscle found in this dissection, is an important potential source of ulnar canal obstruction.
October 2016: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/27595967/ulnar-nerve-injury-after-flexor-tendon-grafting
#11
Michael John McCleave
A 43-year-old female is presented who underwent a two-stage tendon reconstruction and developed a low ulnar nerve palsy postoperatively. Exploration found that the tendon graft was passing through Guyon's canal and that the ulnar nerve was divided. This is a previously unreported complication. The reconstruction is discussed, the literature reviewed and a guide is given on how to identify the correct tissue plane when passing a tendon rod.
October 2016: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/27454516/lipofibromatous-hamartoma-of-the-median-and-ulnar-nerves-at-the-ipsilateral-wrist
#12
Sho Kohyama, Toshikazu Tanaka, Eriko Okano, Takaji Yanai, Naoyuki Ochiai
Lipofibromatous hamartoma (LFH) is a rare condition of the peripheral nerves that typically affects the median nerve. To the best of our knowledge, this is the first report of LFH of both, the median and ulnar nerves, at the wrist of a 63-year-old female patient. The patient presented to our hospital with a 40-year history of pain, numbness, and dysesthesia affecting all fingers of her left hand. Atrophy of the thenar muscles and the first dorsal interosseous was observed upon physical examination. Imaging studies and a surgery revealed that the patient's median and ulnar nerves were significantly enlarged, confirming the LFH diagnosis...
February 2016: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/27390571/interfascicular-renal-cell-carcinoma-metastasis-to-the-ulnar-nerve-a-case-report
#13
Laura S Humphries, Daniel A Baluch, Lukas M Nystrom, Dariusz Borys, Michael S Bednar
BACKGROUND: Metastatic solid tumors to the hand and peripheral nerves are exceedingly rare independent occurrences. Their occurrence together has never been reported in the literature. METHODS: We present a case report of a 69 year old male with a previous history of renal cell carcinoma (RCC) presenting with a rapidly-growing painful mass located at the right volar ulnar wrist, found to have endoneural solid tumor metastatic RCC to the ulnar nerve. RESULTS: Preoperative MRI imaging of the wrist revealed a heterogeneous mass on the volar aspect of the wrist extending along the length of the ulnar artery and nerve to the level of Guyon's canal...
June 2016: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/27169091/type-iii-guyon-syndrome-in-b-boy-break-dancer-a-case-report
#14
Soo-Young Hu, Jin-Gyu Choi, Byung-Chul Son
Although the musculoskeletal injuries associated with break-dancing which is gaining more popularity among adolescent and young people has been reported, the report regarding a peripheral nerve injury associated with breakdance is scarce. We report a rare case of a young amateur break-dancer, 'b-boy' who suffered from a painful paresthesia in his left hand, later diagnosed as type III Guyon's canal syndrome. A 23-year-old, right handed college man presented with a tenderness over the left hypothenar eminence and painful paresthesia over the ring and little fingers of 3 months duration...
October 2015: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/27095524/diagnostic-significance-of-ultrasonographic-measurements-and-median-ulnar-ratio-in-carpal-tunnel-syndrome-correlation-with-nerve-conduction-studies
#15
Ozan Volkan Yurdakul, Nilgün Mesci, Yilmaz Çetinkaya, Duygu Geler Külcü
BACKGROUND AND PURPOSE: We determined the reliability of ultrasonography (US) measurements for diagnosing carpal tunnel syndrome (CTS) and their correlation with symptom duration and electrophysiology findings. We determined whether the ratio of the median-to-ulnar cross-sectional areas (CSAs) can support CTS diagnoses. METHODS: The pisiform CSA (CSA(pisiform)), swelling ratio (SR), palmar bowing, and CSA(pisiform)/ulnar CSA (CSA(ulnar)) measurements made in two subgroups of CTS patients (having sensory affection alone or having both sensory and motor affection) were compared with controls...
July 2016: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/27080868/ulnar-neuropathy-evaluation-and-management
#16
REVIEW
Christopher J Dy, Susan E Mackinnon
Ulnar neuropathy is commonly encountered, both acutely after elbow trauma and in the setting of chronic compression neuropathy. Careful clinical evaluation and discerning evaluation of electrodiagnostic studies are helpful in determining the prognosis of recovery with nonoperative and operative management. Appreciation of the subtleties in clinical presentation and thoughtful consideration of the timing and type of surgical intervention are critical to optimizing outcomes after treatment of ulnar neuropathy...
June 2016: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/26995584/mr-anatomy-and-pathology-of-the-ulnar-nerve-involving-the-cubital-tunnel-and-guyon-s-canal
#17
REVIEW
Luyao Shen, Sulabha Masih, Dakshesh B Patel, George R Matcuk
Ulnar neuropathy is a common and frequent reason for referral to hand surgeons. Ulnar neuropathy mostly occurs in the cubital tunnel of the elbow or Guyon's canal of the wrist, and it is important for radiologists to understand the imaging anatomy at these common sites of impingement. We will review the imaging and anatomy of the ulnar nerve at the elbow and wrist, and we will present magnetic resonance imaging examples of different causes of ulnar neuropathy, including trauma, overuse, arthritis, masses and mass-like lesions, and systemic diseases...
March 2016: Clinical Imaging
https://www.readbyqxmd.com/read/26934311/fibroma-of-a-tendon-sheath-causing-guyon-s-canal-syndrome-case-report
#18
Bin Wang, Jianfeng Zhang, Gang Li, Zhigang Zhang
This report presents a rare case of a 41-year-old woman with decreased sensation and weakness of grip of her left hand. On examination she had a well-defined mass on the ulnar-volar aspect of the wrist. Magnetic resonance imaging showed a focal nodular mass in Guyon's canal. Examination showed that the mass, 2.1 × 1.1 × 1.0 cm in size, originated in the proximal portion of the canal and was loosely associated with the tendon sheath of the flexor carpi ulnaris. The mass was removed and Guyon's canal released...
August 2016: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/26885291/ultrasound-diagnosis-of-double-crush-syndrome-of-the-ulnar-nerve-by-the-anconeus-epitrochlearis-and-a-ganglion
#19
Sang-Uk Lee, Min-Wook Kim, Jae Min Kim
Double compression of the ulnar nerve, including Guyon's canal syndrome associated with cubital tunnel syndrome caused by the anconeus epitrochlearis muscle, is a very rare condition. We present a case of double crush syndrome of the ulnar nerve at the wrist and elbow in a 55-year-old man, as well as a brief review of the literature. Although electrodiagnostic findings were consistent with an ulnar nerve lesion only at the elbow, ultrasonography revealed a ganglion compressing the ulnar nerve at the hypothenar area and the anconeus epitrochlearis muscle lying in the cubital tunnel...
January 2016: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/26492568/ultrasound-visualization-of-nerve-remodeling-after-strenuous-exercise
#20
Antonios Kerasnoudis
INTRODUCTION: The aim of this case study is to describe the use of nerve ultrasound to visualize the morphological changes that occur during conduction velocity alterations after strenuous exercise. METHODS: A 32-year-old, healthy runner underwent clinical, electrophysiological, and ultrasound evaluation 24 hours before, 30 minutes after, and 24 hours after a marathon. RESULTS: An increase in motor conduction velocity of the median, ulnar, radial, and tibial nerves and sensory conduction velocity of the median and ulnar nerves was found between pre- and post-marathon studies...
February 2016: Muscle & Nerve
keyword
keyword
35261
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"