Dataset Information

Alteration in coracohumeral ligament and distance in people with symptoms of subcoracoid impingement.

ABSTRACT:

Background

Differentiation between subacromial impingement versus subcoracoid impingement are important for the treatment target. We evaluated the correlations between coracohumeral ligament (CHL) thickness and distance (CHD) and characterized the CHL and subscapularis (SSC) in subcoracoid impingement subjects.

Methods

An observational, cross-sectional study was carried out. Twenty subcoracoid impingement subjects and age/gender matched controls were assessed in 4 different shoulder positions by ultrasonography.

Results

Moderate correlations between CHL thickness with CHD (r = 0.455 in neutral rotation, p = 0.044; r = 0.483 in interior rotation, p = 0.031) were found in subacromial subjects. Subcoracoid impingement subjects had greater CHL thickness (difference = 0.3 mm, effect size = 0.85, p = 0.006), SSC tendon thickness (difference = 0.7 mm, effect size = 0.92, p = 0.01) and SSC/CHD occupation ratio (difference = 8%, effect size = 0.95, p = 0.005) compared with the control.

Conclusions

Coracohumeral distance is related to ligament thickness, especially in subacromial impingement subjects. Increased coracohumeral ligament and subscapularis thickness as well as decreased subscapularis/coracohumeral distance occupation ratio are characterized in subcoracoid impingement subjects. These quantitative measurements can be useful in identifying patients at risk of subcoracoid impingement from subacromial impingement.

SUBMITTER: Ting DS

PROVIDER: S-EPMC9869551 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Publications

Alteration in coracohumeral ligament and distance in people with symptoms of subcoracoid impingement.

Ting Deng Siang DS Yang Jing-Lan JL Lin Kwan-Hwa KH Wang Tyng-Guey TG Lin Jiu-Jenq JJ

BMC musculoskeletal disorders 20230123 1

<h4>Background</h4>Differentiation between subacromial impingement versus subcoracoid impingement are important for the treatment target. We evaluated the correlations between coracohumeral ligament (CHL) thickness and distance (CHD) and characterized the CHL and subscapularis (SSC) in subcoracoid impingement subjects.<h4>Methods</h4>An observational, cross-sectional study was carried out. Twenty subcoracoid impingement subjects and age/gender matched controls were assessed in 4 different should ...[more]

PMID: 36683027

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Project description:PurposeThe purpose of this morphologic cadaveric study was to quantitatively define the composition of the previously described comma tissue along with its relation to the subscapularis tendon insertion.MethodsFresh frozen cadaveric shoulder specimens were included for analysis. The coracohumeral ligament (CHL) was exposed at its origin along the base of the coracoid process and freed laterally along its course to the lesser tuberosity adjacent to the bicipital groove. The superior glenohumeral ligament (SGHL) was identified and traced along its course deep to the CHL within the rotator interval with insertion onto the superior aspect of the lesser tuberosity. The midpoint diameters of the SGHL and CHL and their composite insertional diameters on the subscapularis tendon insertion and lesser tuberosity were measured with digital calipers. The mean diameter was determined from 3 measurements taken of each ligament.ResultsEight specimens were included. With the use of digital calipers, the mean midpoint diameters of the SGHL and CHL were identified as 5.99 mm (range, 5.25-6.91 mm) and 5.13 mm (range, 4.28-5.72 mm), respectively. The composite insertional diameter of the SGHL and CHL on both the lesser tuberosity and humeral insertion of the subscapularis tendon was 9.93 mm (range, 6.69-12.05 mm). At its insertion, the SGHL and CHL comprised 54% and 46% of the comma tissue, respectively. Additionally, all specimens were identified as showing a confluence of the SGHL and CHL composite insertion with the subscapularis tendon at the point of its humeral head insertion.ConclusionsThe comma tissue is a pivotal structure for the identification, mobilization, and repair of retracted subscapularis tendon tears. Therefore, quantitative knowledge of the midpoint diameter, insertional diameter, and composite distribution of the CHL and SGHL provided by this morphologic cadaveric analysis may aid surgeons in their efforts to restore the native anatomy.Clinical relevanceSubscapularis tendon tears have often been under-addressed during rotator cuff repair. The comma tissue has been described as an anatomic structure that can aid in the identification, mobilization, and repair of retracted subscapularis tendon tears. Therefore, quantitative knowledge of this important arthroscopic landmark may aid surgeons in their efforts to restore the native anatomy.

Project description:ObjectiveThe thickened coracohumeral ligament (CHL) is an important part of the typical manifestations and magnetic resonance imaging of frozen shoulder. However, only a few clinical studies with limited cases on arthroscopic extra-articular entire CHL release exist in the literature. This study was to evaluate the effect of arthroscopic extra-articular entire CHL release for patients with recalcitrant frozen shoulder.MethodsFrom February 2014 to February 2020, 81 cases of recalcitrant frozen shoulder patients treated with surgery in a single-center shoulder department and followed for more than 2 years were analyzed. Arthroscopic 360° capsular release was performed with intra-articular partial release (IPR group) or additional extra-articular entire release (IPR + EER group) of CHL. The same rehabilitation program was performed after surgery in both groups. Visual analogue scale (VAS) for pain, range of motion (ROM), and the Constant-Murley scoring system was evaluated before operation, at 3 months after operation, 6 months after operation, and the final follow-up. T-test, Mann-Whitney U-test and chi-squared test were used to compared data.ResultsThere were 39 patients in the IPR group, with an average follow-up of 29.2 months. A total of Forty-two patients in the IPR + EER group completed a mean follow-up of 25.7 months. All incisions healed in stages. There were significant differences in Constant-Murley shoulder score, VAS score, and ROM before operation and at the final follow-up in both groups (both P < 0.001). The VAS score of the IPR + EER group was lower than that of the IPR group at 3 months after surgery (P < 0.05), and 6 months after operation (P < 0.05). External rotation, internal rotation, and abduction of ROMs and Constant-Murley shoulder score were significantly greater in the IPR + EER group at 3 months (P < 0.001, P < 0.05, P < 0.001, P < 0.05, respectively) and 6 months after operation (P < 0.001, P < 0.05, P < 0.001, P < 0.05, respectively). At the last follow-up, there was no significant difference in forward flexion, internal rotation, and abduction of ROMs, VAS, and the Constant-Murley shoulder score between the IPR and IPR + EER groups. The external rotation of the IPR + EER group was still greater than that of the IPR group at the last follow-up (P < 0.001).ConclusionArthroscopic extra-articular entire coracohumeral ligament release could solve early pain of shoulder joint, recover shoulder joint functions effectively, and achieve a satisfactory efficacy in the treatment of recalcitrant frozen shoulder.

Dataset Information

Alteration in coracohumeral ligament and distance in people with symptoms of subcoracoid impingement.

Background

Methods

Results

Conclusions

Publications

Alteration in coracohumeral ligament and distance in people with symptoms of subcoracoid impingement.

Similar Datasets

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