Quantitative Assessment of Capsular Elongation in R ecurrent Anterior Dislocation of the Shoulder using MR Arthrography.

• URAYAMA Masakazu

  Department of Orthopedic Surgery, Akita University School of Medicine

• ITOI Eiji

  Department of Orthopedic Surgery, Akita University School of Medicine

• KONNO Norikazu

  Department of Orthopedic Surgery, Akita University School of Medicine

• KIDO Tadato

  Department of Orthopedic Surgery, Akita University School of Medicine

• SANO Akihisa

  Department of Orthopedic Surgery, Akita University School of Medicine

• SASHI Ryuji

  Department of Radiology, Akita University School of Medicine

Bibliographic Information

Other Title

• MRアルトログラフィーを用いた反復性肩関節前方脱臼における関節包拡張の定量評価

Abstract

Introduction: In recurrent anterior dislocation of the shoulder, the enlarged capsule is often noticed on arthrography or during surgery. The purpose of this study was to quantify the elongation of the capsule in recurrent anterior dislocation of the shoulder using MR arthrography.<BR>Materials and Methods: There were 16 shoulders with recurrent anterior dislocation (instability group, average age 23 years) and 7 shouders of normal volunteers (control group, average age 20 years). MR images were obtained after 10ml of gadolinium/saline solution (1: 100) was injected into the glenohumeral joint under fluoroscopic guidacce. The slice at the level lcm superior to the inferior margin of the glenoid in axial plane was scanned into a computer, and the length of the anterior and posterior capsule was measured using NIH Image software. The length was normalized to the humeral head diameter.<BR>Results: The anterior capsule was significantly longer in the instability group (43.7±7.9 mm) than in the control group. (37.0±4.3 mm; p=0.045). The posterior capsular length did not show any significant difference between the groups. Conclusion: The anterior capsule was elongated in recurrent anterior dislocation of the shoulder.

Journal

• Katakansetsu

  Katakansetsu 22 (2), 271-273, 1998

  Japan Shoulder Society

Keywords

• Recurrent anterior dislocation of the shoulder
• Magnetic resonance arthrography
• capsular elongation

Details

• CRID: 1390001205467856896
• NII Article ID: 130004643795
• NII Article ID: 10016313042
• NII Book ID: AN10040891
• DOI: 10.11296/katakansetsu1977.22.2_271
• ISSN: 09104461
• Web Site: https://search.jamas.or.jp/link/ui/1999003807
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed