Correlation of suprascapular notch morphology with suprascapular nerve palsy: a 3D-computed tomography study

Honoki, Keigo; Suenaga, Naoki; Oizumi, Naomi; Yamane, Shintaro; Yoshioka, Chika; Hisada, Yukiyoshi; Matsuhashi, Tomoya; Kawamata, Jun; Ito, Yu

doi:10.1016/j.jseint.2022.12.016

Cited by 3 publications

(6 citation statements)

References 35 publications

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“…Although the type and area of the suprascapular notch are considered predisposing factors for suprascapular nerve neuropathy, it is associated in 42% of the cases with solitary paralabral cysts, which are related with the presence of shoulder superior labrum superior labral anterior to posterior (SLAP) lesions [ 20 ]. Honoki et al studied the 3D CT images in 53 patients with SSn palsy and compared the morphology of the SSN with the morphology in a series of 1010 patients without SSn palsy [ 21 ]. They did not find an association between narrow SSN or ossification of the STSL with SSn palsy [ 21 ].…”

Section: Discussionmentioning

confidence: 99%

“…Honoki et al studied the 3D CT images in 53 patients with SSn palsy and compared the morphology of the SSN with the morphology in a series of 1010 patients without SSn palsy [ 21 ]. They did not find an association between narrow SSN or ossification of the STSL with SSn palsy [ 21 ].…”

Section: Discussionmentioning

confidence: 99%

“…Specific abnormalities of the SSN are thought to be among the major causes of suprascapular neuropathy, and in particular the presence of an ossified or bifid STSL and variations such as the double suprascapular foramen, and a narrowed "V" shape configuration [ 4 , 11 , 22 ]. Knowledge of the SSN morphology in patients with posterior shoulder pain and suspected SSn peripheral neuropathy is very important in the diagnosis and treatment of the problem [ 5 , 6 , 11 , 20 , 21 ].…”

Section: Discussionmentioning

confidence: 99%

“…It is not uncommon to see traction osteophytes at the superior opening of the SSN at the attachment sites of the STSL. Ossification of the STSL seems to be an age-related process [ 3 , 21 , 23 ]. The quantitative classification by Polguj et al depends on the accurate measurement of the vertical and horizontal dimensions of the SSN and is prone to measurement bias, especially in Type II, where all three measurements must be equal [ 14 ].…”

Section: Discussionmentioning

confidence: 99%

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Interobserver and Intraobserver Variability of Four Suprascapular Notch Classification Systems

Yiannakopoulos,

Gianzina,

Dellis

et al. 2024

Cureus

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Introduction: Knowledge of the morphology of the suprascapular notch is clinically beneficial in patients with suspected suprascapular nerve compression or palsy. Several classification systems have been proposed for the morphological classification of the suprascapular notch and its several anatomical variations. The purpose of this study was to evaluate the inter- and intraobserver reliability of four different classification systems for suprascapular notch typing analysing shoulder computed tomography (CT) scans. Methods: Shoulder CT scans from 109 subjects (71.5% males) were examined by three raters of various experience levels, one senior, one experienced, and one junior orthopaedic surgeon. The CT scans were evaluated quantitatively and qualitatively and the suprascapular notch was classified according to four classification systems at two separate timepoints, four weeks apart. To determine consistency among the same or different raters, the Kappa statistic was performed and intrarater reliability for each rater between the first and the second evaluation was assessed using Cohen’s kappa. Reliability across all raters at each timepoint was assessed using the Fleiss kappa. Results: Agreement was almost perfect for all the classification systems and amongst all raters, regardless of their experience level. There were no significant differences between the raters on any of the evaluations. The overall interobserver agreement for all classifications was almost perfect. Conclusion: The four suprascapular notch classification systems are reliable, and the rater's experience level has no impact on the evaluation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Interobserver and Intraobserver Variability of Four Suprascapular Notch Classification Systems

Yiannakopoulos,

Gianzina,

Dellis

et al. 2024

Cureus

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“…Recently, Honoki et al [ 37 ], who studied the correlation of SSN morphology with SN palsy in Japanese patients, concluded that the ossification of STSL was an age-related change process without significant sex difference, where the authors noticed a significant increase of the ossified STSL in patients >40 years-old. Also, the authors reported no relation between the narrow notch and the ossification of STSL with the onset of SSN palsy.…”

Section: Discussionmentioning

confidence: 99%

Morphological types and morphometrical measurements of the suprascapular notch in both dry bones and human cadavers: anatomical study to improve the outcomes of the diagnostic and interventional procedures in the shoulder region

Nasr

2023

Anat Cell Biol

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Understanding the anatomy of suprascapular area helps the clinicians and surgeons in management of any disability at the shoulder region. This work aimed to clear the different morphological and morphometrical types of suprascapular notch (SSN). Unknown 120 dry human scapulae of both sides and 60 formalin-embalmed cadaveric upper limbs (40 males and 20 females) were used in the present study. Three main morphological forms of SSN were reported: J, U, and V-shaped. J-shaped notch showed the highest incidence followed by U-shaped then V-shaped one. Morphometrically, type (III) notch was the most prevalent in both dry bones and cadavers, while the incidence of type (II) was the lowest form. Also, the measurements of superior transverse diameter, middle transverse diameter and vertical dimension of the different types of the notch showed no side or sex significant difference. The suprascapular foramen with ossified superior transverse scapular ligament (STSL) was seen in 5.8% of dry bones and 10% of cadaveric specimens. Fan and band-shaped ossified transverse scapular ligaments were reported. Absence of SSN was seen in 10.8% of dry bones, 7.5% of male and 10% of female specimens with left side predominance. V-shaped, absence, and ossified STSL were considered as predisposing factors of suprascapular nerve entrapment syndrome. Knowledge of the morphology and morphometric parameters of SSN is of great clinical significance for anatomists, radiologists, physiotherapists, orthopedics and neurosurgeons to perform good diagnosis and best planning for surgical or arthroscopic interventions within the shoulder region.

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Morphometric evaluation of suprascapular notch and superior angle of the scapula using three-dimensional computed tomography in the Indian population

Raman,

Pandey,

Pandey

et al. 2024

Translational Research in Anatomy

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Correlation of suprascapular notch morphology with suprascapular nerve palsy: a 3D-computed tomography study

Cited by 3 publications

References 35 publications

Interobserver and Intraobserver Variability of Four Suprascapular Notch Classification Systems

Interobserver and Intraobserver Variability of Four Suprascapular Notch Classification Systems

Morphological types and morphometrical measurements of the suprascapular notch in both dry bones and human cadavers: anatomical study to improve the outcomes of the diagnostic and interventional procedures in the shoulder region

Morphometric evaluation of suprascapular notch and superior angle of the scapula using three-dimensional computed tomography in the Indian population

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