Sonographic cross-sectional area measurement in carpal tunnel syndrome patients: can delta and ratio calculations predict severity compared to nerve conduction studies?

Klauser, Andrea; Ellah, Mohamed M. H. Abd; Halpern, Ethan J.; Siedentopf, Christian; Auer, T.; Eberle, Gernot; Bellmann‐Weiler, Rosa; Kremser, Christian; Sojer, Martin; Löscher, Wolfgang N.; Gabl, M.; Feuchtner, Gudrun; Jaschke, Werner

doi:10.1007/s00330-015-3649-8

Cited by 52 publications

(55 citation statements)

References 26 publications

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“…Most injuries are incomplete tears associated with minimal instability. MR and US images may show diffuse ligament swelling and thickening (62,63) and by palmar bowing of the flexor retinaculum. MR imaging may show edema within the carpal tunnel and enlargement of the nerve, sometimes with nerve edema and contrast enhancement thereof (63).…”

Section: Joint Injuriesmentioning

confidence: 96%

Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series

Cockenpot¹,

Lefebvre²,

Demondion³

et al. 2016

Radiology

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Hand and wrist injuries are common occurrences in amateur and professional sports and many of them are sport-specific. These can be divided into two categories: traumatic injuries and overuse injuries. The aim of this article is to review the most common hand and wrist sports-related lesions. Acute wrist injuries are predominantly bone fractures, such as those of the scaphoid, hamate hook, and ulnar styloid. Ligament lesions are more challenging for radiologists and may lead to carpal instability if undiagnosed. Overuse wrist injuries are mainly represented by tendinous disorders, with De Quervain syndrome and extensor carpi ulnaris tendon disorders being the most common among them; however, there are other possible disorders such as impaction syndromes, stress fractures, and neurovascular lesions. Finally, finger lesions, including closed-tendon injuries (mallet and boutonniere injuries, jersey finger, and boxer's knuckle), flexor pulley injuries, and skier's thumb, should also be detected. (©) RSNA, 2016 Online supplemental material is available for this article.

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Section: Joint Injuriesmentioning

confidence: 96%

Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series

Cockenpot¹,

Lefebvre²,

Demondion³

et al. 2016

Radiology

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“…For the discrimination of CTS the best cut-off value for CSA change score was calculated as 4.9 which was higher than the study conducted by Klauser et al [29]. Klauser et al compared the CSA measurement of the median nerve acquired at the level of the carpal tunnel and more proximally at the level of the pronator quadratus muscle and calculated their differences.…”

Section: Discussionmentioning

confidence: 92%

“…In a recent study with 643 wrists diagnosed as mild, moderate and severe CTS, Klauser et al calculated the difference and ratio of the CSA measurements of the median nerve at the carpal tunnel and the pronator quadratus muscle sites. Both parameters were succesful in detecting the severity of CTS [29].…”

Section: Rte Measurements Sr Measurements At the Level Of Carpal Tunnmentioning

confidence: 93%

Carpal tunnel syndrome: elastosonographic strain ratio andcross-sectional area evaluation for the diagnosis and disease severity.

et al. 2016

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Aim: To evaluate the role of gray scale ultrasonography (US) and real time elastosonography (RTE) in carpal tunnel syndrome (CTS). Materials and methods: Both wrists of 18 healthy volunteers (n=36) formed the control group (Group 1) and 19 symptomatic outpatients of the neurology clinic constituted the patient group. According to nerve conduction study results, cases with mild CTS (n=15) formed Group 2; cases with moderate to severe CTS (n=20) formed Group 3. Cross sectional area (CSA) and strain ratio (SR) were measured at carpal tunnel inlet (CTI) and 4 cm proximal to the distal end of the radius (P). CSA and SR change score (CSA CTI -CSA P ; SR CTI -SR P ), CSA and SR ratio score (CSA CTI / CSA P ; SR CTI / SR P ) were calculated.

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“…Ultrasonography (US) is increasingly used to confirm the clinical suspicion of CTS and to determine CTS severity with parameters including differences in cross-section areas (ΔCSA) [11] and wrist-to-forearm-ratio (WFR) [12, 13]. Both have been shown to possess roughly equal diagnostic accuracy when performed at defined landmarks [11].…”

Section: Introductionmentioning

confidence: 99%

“…Both have been shown to possess roughly equal diagnostic accuracy when performed at defined landmarks [11]. …”

Section: Introductionmentioning

confidence: 99%

Compliance assessment and flip-angle measurement of the median nerve: sonographic tools for carpal tunnel syndrome assessment?

et al. 2018

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Sonographic cross-sectional area measurement in carpal tunnel syndrome patients: can delta and ratio calculations predict severity compared to nerve conduction studies?

Cited by 52 publications

References 26 publications

Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series

Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series

Carpal tunnel syndrome: elastosonographic strain ratio andcross-sectional area evaluation for the diagnosis and disease severity.

Compliance assessment and flip-angle measurement of the median nerve: sonographic tools for carpal tunnel syndrome assessment?

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