Zusammenfassung
Ziel: Die Untersuchung der diagnostischen Aussagekraft von Magnetresonanz-Tomographie (MRT),
Arthrographie (AG) und Arthro-CT (ACT) bei Erkrankungen des Handgelenkes. Methodik: Insgesamt 346 Untersuchungen des Handgelenkes wurden für einen dreijährigen Beobachtungszeitraum
retrospektiv ausgewertet. Es wurden 211 MRT, 151 Arthrographien (AG) und 126 Arthro-CT
(ACT) durchgeführt. Alle Diagnosen wurden operativ (n = 78) oder durch den klinischen
Verlauf in einer 6-monatigen Nachbeobachtung gesichert. Ergebnisse: Für die Diagnostik von Läsionen des diskoulnaren Komplexes lag die Sensitivität und
Spezifität von AG, ACT und MRT über 0,96. Lediglich der positive Vorhersagewert differierte,
allerdings nicht statistisch signifikant: Für die MRT lag er bei 0,94, für AG und
ACT bei 0,99 resp. 0,98. In der Diagnostik traumatischer Verletzungen, speziell von
Skaphoidfrakturen, war die MRT der AG und ACT deutlich überlegen. Ferner war die Möglichkeit
der funktionellen Beurteilung in der AG wertvoll zur Diagnostik von ligamentären Defekten
(n = 25). Schlussfolgerung: Für Erkrankungen des ulno-karpalen Komplexes ist bei hoher Zuverlässigkeit beider
Verfahren die AG/ACT der MRT gering überlegen. In der Diagnostik von traumatischen
und vaskulären Veränderungen ist die MRT der AG/ACT vorzuziehen.
Abstract
Purpose: To evaluate the use of magnetic resonance imaging (MRI) compared with arthrography
and arthro-CT (AG/ACT) in patients with wrist pain. Methods: MRI and arthrography/arthro-CT (AG/ACT) of the wrist joint were retrospectively evaluated
in 346 patients over a three-year period. Imaging findings were correlated to surgical
results (n = 78) or clinical course in an at least 6-month follow-up. Results: For tears of the triangular fibrocartilage, arthrography, arthro-CT, and MRI demonstrated
a sensitivity and specificity of more than 0.96. Only the positive predictive value
was superior for arthrography/arthro-CT (0.99 and 0.98, respectively) compared with
MRI (0.94). Arthrography was superior for functional diagnosis of scapho-lunate ligament
tears (n = 25). Ulno-lunate and ulno-triquetral ligament defects were demonstrated
more exactly by arthrography. Traumatic osseous defects, particularly scaphoid fractures
(n = 33) and avascular necrosis (n = 17), were better diagnosed using MRI. Conclusion: For suspected lesions of the triangular fibrocartilage complex, AG/ACT is slightly
more reliable than MRI. However, MRI was found to be highly accurate in diagnosing
TFC tears, and is superior to AG/ACT in detecting traumatic and vascular lesions of
the wrist.
Schlüsselwörter
Handgelenk-Pathologie - Gelenkerkrankungen-Diagnostik - Gelenkknorpel-Verletzungen
Key words
Wrist joint pathology - Joint diseases diagnosis - Cartilage articular injuries -
Triangular fibrocartilage tear
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