RESEARCH ARTICLE


Effects of Arthroscopic Coracohumeral Ligament Release on Range of Motion for Patients with Frozen Shoulder



Yoshihiro Hagiwara1, *, Takuya Sekiguchi2, Akira Ando3, Kenji Kanazawa4, Masashi Koide3, Junichiro Hamada5, Yutaka Yabe1, Shinichiro Yoshida1, Eiji Itoi1
1 Department of Orthopaedic Surgery, Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Japan.
2 Department of Orthopaedic Surgery, Iwate Prefectural Centeral Hospital, Morioka, Japan
3 Department of Otrhopaedic Surgery, Matsuda Hospital, Sendai, Japan.
4 Department of Otrhopaedic Surgery, South Miyagi Medical Center, Ohgawara, Japan
5 Department of Orthopaedic Surgery, Kuwano Kyoritsu Hospital, Koriyama, Japan


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Creative Commons License
© 2018 Hagiwara et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan; Tel: +81-22-7177245; Fax: +81-22-7177248; E-mail: hagi@med.tohoku.ac.jp


Abstract

Background:

A thickened coracohumeral ligament is a highly specific manifestation of, and primary restraint against external rotation in frozen shoulders.

Objective:

The purpose of this study was to evaluate the effects of complete arthroscopic coracohumeral ligament release on range of motion in frozen shoulder.

Methods:

Fifty-two consecutive shoulders in 52 patients were treated between April 2015 and June 2016. To evaluate solely glenohumeral range of motion, the scapula was fixed by an examiner with one hand (without palpating scapular motion), and range of motion was measured using a goniometer. For the first step, arthroscopic pancapsular release was performed in a beach-chair position with (Group 1) or without (Group 2) complete coracohumeral ligament release. For the final step, the remaining coracohumeral ligaments in Group 2 were released and the ranges of motion were compared to those in Group 1.

Results:

The average age of the patients was significantly higher in Group 1, but there were no significant differences between the two groups with respect to sex, affected side, preoperative range of motion, or American Shoulder and Elbow Society Score. Abduction, external rotation at adduction, and external and internal rotations at 90° of flexion in Group 1 were significantly greater than those in Group 2. After the additional release of the remaining coracohumeral ligaments in Group 2, all ranges of motion were significantly recovered and there was no significant difference between the groups.

Conclusion:

Complete coracohumeral ligament release is a recommended intraoperative procedure for regaining full range of motion in frozen shoulders.

Keywords: Frozen shoulder, Adhesive capsulitis, Arthroscopic capsular release, Range of motion, Coracohumeral ligament, Joint capsule, Beach chair position, Goniometer.