Dynamic Visualization of the Coracoacromial Ligament by Ultrasound

Wang, Yi-Chian; Wang, Hsing‐Kuo; Chen, Wen-Shiang; Wang, Tyng-Guey

doi:10.1016/j.ultrasmedbio.2009.01.003

Cited by 28 publications

(26 citation statements)

References 25 publications

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“…Previous studies also demonstrated that some specific shoulder motions resulted in subacromial impingement phenomenon. 24,25 However, the studies were limited to only a few shoulder motions or those performed during shoulder impingement testing. In this study, we focused on impingement-provoking shoulder motions in activities of daily living.…”

Section: Discussionmentioning

confidence: 99%

“…1). 24 The longitudinal peak strain of the coracoacromial ligament was calculated by the horizontal fractional change. A region of interest was placed in a longitudinal direction along the coracoacromial ligament.…”

Section: Methodsmentioning

confidence: 99%

“…Some studies were performed to evaluate the in vivo properties of the coracoacromial ligament, but only during limited shoulder motions. [24][25][26] The purpose of this study was to analyze the in vivo vertical displacement and intraligamentous strain of the coracoacromial ligament, which might reflect the presence of subacromial impingement during various shoulder motions. We hypothesized that subacromial impingement occurs in the normal shoulder and that specific shoulder motions are more closely related to subacromial impingement.…”

mentioning

confidence: 99%

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Which shoulder motions cause subacromial impingement? Evaluating the vertical displacement and peak strain of the coracoacromial ligament by ultrasound speckle tracking imaging

Park

Kim

Bae

et al. 2015

Journal of Shoulder and Elbow Surgery

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Which shoulder motions cause subacromial impingement? Evaluating the vertical displacement and peak strain of the coracoacromial ligament by ultrasound speckle tracking imaging

Park

Kim

Bae

et al. 2015

Journal of Shoulder and Elbow Surgery

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“…9 Dynamic muscular control is essential to maintaining joint stability and preventing functional subacromial impingement, especially due to the relatively weak tensile strength of the CAL and other capsular ligaments that are often subjected to enormous directional forces. 16,35,47,59 …”

Section: Functionmentioning

confidence: 99%

“…The presence of enthesophytes within the CAL may be indicative of rotator cuff pathology. 49 Wang et al 59 detailed the use of high-resolution ultrasound for the visualization of the CAL, using an anterior-superior approach to accurately measure both its length and thickness. Ultrasound provides the distinct advantage of allowing dynamic visualization of the CAL during various provocative shoulder examination techniques.…”

Section: Imagingmentioning

confidence: 99%

The Coracoacromial Ligament: Anatomy, Function, and Clinical Significance

Rothenberg

Gasbarro

Chlebeck

et al. 2017

Orthopaedic Journal of Sports Medicine

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The coracoacromial ligament (CAL) was first described as a pain generator by Dr Charles Neer in the early 1970s. Since that time, considerable controversy regarding CAL management during acromioplasty has persisted. This review aims to better understand the role of the CAL in shoulder physiology and pathology. Sixty-six articles from 1958 to 2016 were identified using an electronic search of PubMed, Cochrane Library, AccessMedicine, and MD Consult for case series as well as cohort and prospective studies. The authors used “coracoacromial ligament” and “coracoacromial veil” as medical subject headings (MeSH). In addition, reference lists from all identified articles were reviewed for studies that the search terms may have omitted. The CAL plays an important role in shoulder biomechanics, joint stability, and proprioception. Morphological variance of the CAL is evident throughout the literature. Age-dependent changes due to chronic stress and cellular degradation cause thickening and stiffening of the CAL that may contribute to a spectrum of shoulder pathology from capsular tightness to rotator cuff tear arthropathy and impingement syndrome. The CAL is an integral component of the coracoacromial arch. CAL release during acromioplasty remains controversial. Future clinical outcomes research should endeavor to advance the understanding of the CAL to refine clinical and intraoperative decision making regarding its management.

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The association between coracoacromial ligament morphology and rotator cuff tears: A cadaveric study

et al. 2021

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To determine the association between coracoacromial ligament (CAL) morphology and rotator cuff tears. The present study is a prospective cohort study based on the dissection of 172 shoulders from 86 (46 female, 40 male) formalin embalmed European Caucasian cadavers, with a median age of 82 years. The anatomy of CAL was examined, including its morphology and parametric measurements, while the rotator cuff tendons were inspected for the presence of tears. Gross examination of the CAL in 155 shoulders revealed a variable number of bands as follows: 28 (18%) had one band, 56 (36%) two bands and 71 (46%) three or more bands. Inspection of the rotator cuff tendons showed the presence of tears in 77 (50%) shoulders, of which 37 (24%) were partial and 40 (26%) were full‐thickness tears. Statistical analysis showed a significant association (P < 0.05) between CAL band number and the prevalence of a rotator cuff tear. A high proportion of rotator cuff tears were observed in shoulders with two (52%) and three or more CAL bands (56%) compared to single band ligaments (29%). Parametric assessment of the CAL in shoulders with rotator cuff tears showed significantly greater (P < 0.05) attachment widths and ratios, thicker ligament bands, and larger cross‐sectional areas compared to the control group. Coracoacromial ligaments with more than a single band have a strong association with rotator cuff tears.

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Dynamic Visualization of the Coracoacromial Ligament by Ultrasound

Cited by 28 publications

References 25 publications

Which shoulder motions cause subacromial impingement? Evaluating the vertical displacement and peak strain of the coracoacromial ligament by ultrasound speckle tracking imaging

Which shoulder motions cause subacromial impingement? Evaluating the vertical displacement and peak strain of the coracoacromial ligament by ultrasound speckle tracking imaging

The Coracoacromial Ligament: Anatomy, Function, and Clinical Significance

The association between coracoacromial ligament morphology and rotator cuff tears: A cadaveric study

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