Cartilage lesions of the glenohumeral joint: diagnostic effectiveness of multidetector spiral CT arthrography and comparison with arthroscopy |
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Authors: | Frédéric E Lecouvet Benjamin Dorzée Jean E Dubuc Bruno C Vande Berg Jacques Jamart Jacques Malghem |
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Institution: | (1) Department of Radiology, Cliniques Universitaires St Luc, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200 Brussels, Belgium;(2) Department of Orthopaedic Surgery, Cliniques Universitaires St Luc, Université Catholique de Louvain, Hippocrate Avenue 10/2942, 1200 Brussels, Belgium;(3) Center of Biostatistics, Mont Godinne University Hospital, 5530 Yvoir, Belgium |
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Abstract: | This study assessed the diagnostic effectiveness of multidetector spiral CT arthrography (MDCTa) in detecting hyaline cartilage
abnormalities of the shoulder joint, with correlation to arthroscopy. Shoulder MDCTa images prospectively obtained in 22 consecutive
patients (mean age, 50 years; age range, 23–74 years; 12 female, 10 male) were evaluated for glenohumeral cartilage lesions.
Two musculoskeletal radiologists independently analysed the cartilage surfaces of the humeral head and of the glenoid fossa
in nine anatomical surface areas. Observations of MDCTa were compared to arthroscopic findings. The sensitivity and specificity
of MDCTa for grade 2 (substance loss <50%) or higher and grade 3 (substance loss ≥50%) or higher cartilage lesions, the Spearman
correlation coefficient between arthrographic and arthroscopic grading, and K statistics for assessing Intra and Interobserver reproducibility were determined. At MDCTa, sensitivities and specificities
ranged between 80% and 94% for the detection of grade 2 or higher cartilage lesions, and between 88% and 98% for the detection
of grade 3 or higher cartilage lesions. Spearman correlation coefficients between MDCTa and arthroscopic grading of articular
surfaces ranged between 0.532 and 0.651. Interobserver agreement was moderate for grading all articular surfaces (κ = 0.457),
but substantial to almost perfect for detecting lesions with substance loss (κ, 0.618–0.876). In conclusion, MDCTa is accurate
for the study of cartilage surface in the entire shoulder joint. This technique may beneficially impact patient’s management
by means of selecting the proper treatment approach. |
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Keywords: | Shoulder Imaging Cartilage CT Arthrography Arthroscopy Cartilage transplantation |
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