Magnetic Resonance Imaging After Endoscopic Carpal Tunnel Release

Beck, John D.; Jones, Robert B.; Malone, W. James; Heimbach, Janice; Ebbitt, Tim; Klena, Joel C.

doi:10.1016/j.jhsa.2012.11.013

Cited by 12 publications

(13 citation statements)

References 14 publications

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“…Volume increment and volar displacement of the carpal contents following carpal tunnel release have been reported in some case-series reports. [7][8][9] But ulnar displacement has not been indicated in these studies. For the mechanism of the ulnar volar translocation of carpal contents, Pingree et al presumed that release of the ligament too far in the ulnar direction may have contributed to the translocation.…”

Section: Discussionmentioning

confidence: 94%

Ulnar Neuropathy due to Volar/Ulnar Displacement of the Flexor Tendons after Open Carpal Tunnel Release: Case Report

Tanabe

Miyamoto

2017

J Hand Surg Asian-Pac Vol

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Section: Discussionmentioning

confidence: 94%

Ulnar Neuropathy due to Volar/Ulnar Displacement of the Flexor Tendons after Open Carpal Tunnel Release: Case Report

Tanabe

Miyamoto

2017

J Hand Surg Asian-Pac Vol

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“…In these studies, enlargement and flattening of the median nerve, as well as palmar displacement after TCL release, have been reported. [2,4,12] The distance between the median nerve and the flexor pollicis longus tendon was significantly greater in CTS patients than in healthy volunteers during thumb motion. [13][14][15] However, most musculoskeletal radiologists interpret a signal change in the peripheral nerve only as an increase or no increase by visual inspection, which may lead to interpretation errors.…”

Section: Discussionmentioning

confidence: 97%

“…[1,2] Magnetic resonance imaging is a sensitive method to diagnose CTS; and traditionally, signal changes were used for diagnosis of CTS. [3,4] Since the appearance of the first MRI reports of the median nerve in the carpal tunnel in the early 1990s, MRI has been recently shown to be of potential value in the diagnosis of CTS through achieved high-resolution imaging by using small surface coils and a limited field of view. Additionally, many imaging studies have demonstrated the ability of MRI to accurately assess the morphological aspects of CTS.…”

Section: Discussionmentioning

confidence: 99%

“…Pre-and postoperatively, the shortest distances between the median nerve and the hook of the hamate, which is reported to be a constant bony landmark, [4] were measured on transverse plane images ( Figure 1). Measurements were performed by two experienced musculoskeletal radiologists, who were blind to the patient and control groups, on the axial and coronal MR images.…”

Section: Methodsmentioning

confidence: 99%

“…However, to the best of our knowledge, the relative position of the median nerve has not been studied in the literature, nor the effect of carpal tunnel release (CTR) on its location within the carpal tunnel. [4] Therefore, in this study, we aimed to evaluate the distance between the median nerve and the hook of the hamate pre-and postoperatively in patients with CTS and to investigate the efficiency of MRI in diagnosis and postoperative follow-up.…”

mentioning

confidence: 99%

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Does median nerve translate pre- and postoperatively in carpal tunnel syndrome?

Yıldırım

Tutar

Nayman

et al. 2018

Eklem Hastalik Cerrahisi

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Bu çalışmada karpal tünel sendromlu hastalarda median sinir ve hamatum çengeli arasındaki mesafe ameliyat öncesi ve sonrasında değerlendirildi ve manyetik rezonans görüntülemenin tanı ve ameliyat sonrası takipte etkinliği araştırıldı. Hastalar ve yöntemler: Karpal tünel sendromlu 15 hastada (4 erkek, 11 kadın; ort. yaş 51 yıl; dağılım, 41-66 yıl) karpal tünel gevşetilerek median sinir dekompresyonu uygulandı. Median sinir ile hamatum çengeli arasındaki en kısa mesafe ameliyat öncesinde ve ameliyattan üç ay sonra manyetik rezonans görüntüleme ile ölçülerek radial ve ulnar yer değiştirme değerlendirildi. Bulgular 15 denek (5 erkek, 10 kadın; ort. yaş 52.2 yıl; dağılım, 40-65 yıl) içeren kontrol grubununkiler ile karşılaştırıldı. Bulgular: Karpal tünel sendromlu hastalarda median sinir ulnar tarafa kaydı. Tenar atrofisi olan beş hastanın grup içinde değerlendirilmesiyle hastalık şiddeti arttıkça sinirin mediale yer değiştirme derecesinin de arttığı görüldü. Ameliyat öncesine göre, dekompresyon sonrası median sinir belirgin olarak radial tarafa kaydı. Sonuç: Karpal tünel sendromlu hastalarda median sinirde belirgin ulnar yer değiştirme ve karpal tünel gevşetilmesi sonrası lateral yer değiştirme gözlemlendi. Manyetik rezonans görüntüleme ameliyat sonrası geç iyileşebilecek ileri evre karpal tünel sendromlu hastalarda tanı koymak ve ameliyat başarısını değerlendirmek için kullanılabilir.

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Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

Lee

Griffith

et al. 2018

J of Clinical Ultrasound

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Background: This study compares median nerve cross-sectional area (CSA) measurements at the wrist obtained with ultrasound (US) and magnetic resonance imaging (MRI) using cadaveric measurements as the gold standard.Methods: Median nerve CSA was measured using US and MRI in 9 cadaveric wrists obtained from 5 subjects at 5 locations: distal forearm, proximal to tunnel inlet, at tunnel inlet, at tunnel outlet, and distal to tunnel outlet and then on identical cadaveric transverse sections obtained with a bandsaw. All US, MRI, and cadaveric measurements were repeated to determine reliability. Median nerves of 10 patients with clinical carpal tunnel syndrome (CTS) were measured with US and MRI using an identical method US.Results: Median nerve CSA MRI measurements correlated better (Pearson correlation: 0.80-0.95, P < .05) with cadaveric measurements than with US measurements (Pearson correlation: 0.61-0.79, P < .05). Median nerve CSA US measurements (8.6-12.5 mm 2 , P < .05) were smaller at all levels than MRI (11.3-14.7 mm 2 ) or cadaveric (11.0-14.9 mm 2 ) measurements while MRI and cadaver measurements were similar at all levels. Median nerve CSA MRI measurements in CTS patients were larger than US measurements at all levels. Conclusion: Median nerve CSA measurements by MRI are larger than US measurements and correlated better with cadaveric measurements. Median nerve CSA criteria used for diagnosing CTS on US are not likely to be applicable to MRI. K E Y W O R D S cross sectional, measurement, median nerve, MRI, ultrasound

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Magnetic Resonance Imaging After Endoscopic Carpal Tunnel Release

Cited by 12 publications

References 14 publications

Ulnar Neuropathy due to Volar/Ulnar Displacement of the Flexor Tendons after Open Carpal Tunnel Release: Case Report

Ulnar Neuropathy due to Volar/Ulnar Displacement of the Flexor Tendons after Open Carpal Tunnel Release: Case Report

Does median nerve translate pre- and postoperatively in carpal tunnel syndrome?

Cross‐sectional area of the median nerve at the wrist: Comparison of sonographic, MRI, and cadaveric measurements

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