Correlations of coracohumeral ligament and range of motion restriction in patients with recurrent anterior glenohumeral instability evaluated by magnetic resonance arthrography

Kenji Kanazawa, Yoshihiro Hagiwara, Nobuaki Kawai, Takuya Sekiguchi, Masashi Koide, Akira Ando, Hiroyuki Sugaya, Eiji Itoi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Background Evaluation of range of motion (ROM) restriction before treatment of shoulder disorders is important for predicting the final functional outcomes. The purpose of this study was to investigate correlations of thickness of the coracohumeral ligament (CHL) and ROM restriction in patients with recurrent anterior glenohumeral instability. Methods Between January 2005 and March 2015, 181 shoulders (137 male and 44 female patients; mean age, 29.3 years) with recurrent anterior glenohumeral instability treated with an arthroscopic Bankart repair were enrolled in this study. We evaluated preoperative ROM, thickness of the CHL, and obliteration of the subcoracoid fat triangle on magnetic resonance arthrography. ROM measurements, including forward flexion (FF), external rotation with the arm at the side (ER), and hand behind the back (HBB), were made in a standing position. Results There were significant negative correlations between FF and age (P < .001) and between HBB and age (P < .001) but not between ER and age (P = .11). The thickness of the CHL significantly increased with age (P < .001). FF, ER, and HBB were significantly restricted in patients with obliteration compared with those without obliteration (P < .001, P = .004, P < .001, respectively). Conclusions Obliteration of the subcoracoid fat triangle and the thickness of the CHL positively correlated with ROM restrictions, and these changes were greater with age in patients with recurrent anterior glenohumeral instability.

Original languageEnglish
Pages (from-to)233-240
Number of pages8
JournalJournal of Shoulder and Elbow Surgery
Volume26
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Keywords

  • CHL thickness
  • ROM restriction
  • anterior glenohumeral instability
  • coracohumeral ligament
  • magnetic resonance arthrography
  • subcoracoid fat triangle

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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