Scapholunate Advanced Collapse and Scaphoid Nonunion Advanced Collapse: MDCT Arthrography Features

Crema, Michel D.; Zentner, Joachim; Guermazi, Ali; Jomaah, N.; Marra, Monica; Roemer, Frank W.

doi:10.2214/ajr.11.7574

Cited by 25 publications

(21 citation statements)

References 15 publications

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“…Wyrick et al 4 reported an average grip strength preservation as high as 94%, following PRC intervention. 2,[10][11][12]23 For postoperative average ROM, Wall et al 10 and Stern 22 reported a minimum of 71% of the contralateral normal wrist, with preservation as high as 80%, according to Rettig and Raskin. 10,15,24 Excellent results have been reported with PRC for SLAC wrist, with the purported advantages being earlier motion, no hardware, and no need for arthrodesis to occur.…”

Section: Discussionmentioning

confidence: 99%

Post-traumatic Scapholunate Advanced Collapse of the Wrist: A Case Report

Ault

Mann

Troutner

et al. 2018

Journal of Chiropractic Medicine

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Section: Discussionmentioning

confidence: 99%

Post-traumatic Scapholunate Advanced Collapse of the Wrist: A Case Report

Ault

Mann

Troutner

et al. 2018

Journal of Chiropractic Medicine

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“…While ligamentous causes of instability are not directly visible in plain computed tomography, CT imaging after multi-compartment arthrography of the wrist has high diagnostic value for interosseous ligament lesions, achieving comparable results to MR arthrography in the detection of scapholunate and lunotriquetral ligament injuries (▶ Fig. 2f) [16,18,19]. Furthermore, high-resolution CT in thin slice technique is considered the diagnostic reference standard in primary imaging of scaphoid fractures.…”

Section: Ctmentioning

confidence: 99%

“…Finally, osteoarthritis and loss of carpal height indicate stage IV of SLD, the so-called SLAC wrist (Scapholunate Dissociation Advanced Collapse). Depending on the extent of arthrosis, SLAC I (only radioscaphoid joint), II (entire radiocarpal joint) and III (additional midcarpal joint osteoarthritis) can be differentiated [18,[35][36][37]. Ligament conditions in different stages of SLD are summarized in ▶ Table 2.…”

Section: Stagingmentioning

confidence: 99%

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Imaging of Carpal Instabilities

Grunz

Gietzen

Grunz

et al. 2020

Rofo

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Background The term “carpal instability” describes different debilitating wrist conditions, in which the carpus is unable to maintain its physiological range of motion and load transfer. Depending on the cause and location of the dysfunction, four groups can be defined: dissociative, non-dissociative, complex, and adaptive carpal instability. As the most common form by far, dissociative carpal instability can further be categorized as dorsal or palmar intercalated segment instability, contingent on the afflicted interosseous ligament. Method This review article outlines the different entities of carpal instability, their pathophysiology, and their clinical presentation. It further discusses the diagnostic significance of different imaging methods as well as the established treatment options for each form of instability in context with the current literature. Results and Conclusion Early detection and treatment of carpal instability are essential for preventing carpal osteoarthritis. Traumatic lesions of the scapholunate interosseous ligament are the most frequent cause of instability. They can occur in an isolated fashion or in context with other carpal injuries. While stress imaging and fluoroscopy facilitate the differentiation between dynamic and static forms of carpal instability, only MRI and CT/MR arthrography can directly reveal the extent of ligament discontinuity. Key Points: Citation Format

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“…The development of osteonecrosis in the proximal fragment is favored by the retrograde interosseous course of nutrient vessels originating from the radial artery. 3 Progression of stages is typical in the development of scaphoid nonunion 17,[37][38][39] : ("hypertrophic nonunion") or without ("atrophic nonunion") formation of osteophytes.…”

Section: Osteonecrosis Of the Proximal Fragment In Scaphoid Nonunionmentioning

confidence: 99%

Osteonecrosis of the Upper Extremity: MRI-Based Zonal Patterns and Differential Diagnosis

Schmitt

Kalb

Christopoulos

et al. 2019

Semin Musculoskelet Radiol

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Regarding the upper extremity, osteonecrosis can relate to the humeral head and to any carpal bone, most commonly the lunate (Kienböck's disease), scaphoid (Preiser's disease and nonunion), and capitate bone (osteonecrosis of the capitate head). In children and adolescents, osteochondrosis is an important differential diagnosis at the epiphyses. Appropriate imaging of osteonecrosis depends on knowledge about blood supply, biomechanical load, and bone repair mechanisms. Contrast-enhanced MRI (ceMRI) enables the differentiation of up to three mostly band-shaped zones: necrotic tissue (proximal), hypervascular repair tissue (intermediate), and viable bone (distal). To distinguish between necrotic and repair zones, intravenous gadolinium is recommended in MRI. Osteosclerosis and insufficiency fractures in early and intermediate stages as well as osteoarthritis in advanced stages are best depicted using high-resolution CT (HRCT). The combination of HRCT and ceMRI allows for exact classification of osteonecrosis regarding morphology and viability.

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Scapholunate Advanced Collapse and Scaphoid Nonunion Advanced Collapse: MDCT Arthrography Features

Abstract: MDCT arthrography is an excellent tool for patients with clinically suspected SLAC or SNAC wrist because it allows identification of the spectrum of findings for diagnosis and proper classification, which directly impact management.

Cited by 25 publications

References 15 publications

Post-traumatic Scapholunate Advanced Collapse of the Wrist: A Case Report

Post-traumatic Scapholunate Advanced Collapse of the Wrist: A Case Report

Imaging of Carpal Instabilities

Osteonecrosis of the Upper Extremity: MRI-Based Zonal Patterns and Differential Diagnosis

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