Arthroscopic decompression at the suprascapular notch: a radiographic and anatomic roadmap

Dietrich, Lindsey N.; Bentley, Ashley; Savage, Jay A.; Momaya, Amit; Larrison, Matthew; McGwin, Gerald; Ponce, Brent A.

doi:10.1016/j.jse.2014.07.018

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…Also, as the SSN is variform, its shape and size are the most important factors in the aetiopathology of SN entrapment [1,11,17]. Therefore, knowledge of the morphology of the suprascapular region, especially the SSN, is particularly important in various techniques associated with arthroscopic SN decompression [3,7,8] or ultrasound-guided blockage of the SN [15].…”

Section: Introductionmentioning

confidence: 99%

A computed tomography study on the correlation between the morphometry of the suprascapular notch and anthropometric measurements of the scapula

et al. 2016

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Section: Introductionmentioning

confidence: 99%

A computed tomography study on the correlation between the morphometry of the suprascapular notch and anthropometric measurements of the scapula

et al. 2016

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“…Various studies have reported radiological measurements. Dietrich et al 22) conducted a quantitative analysis of 10 fresh cadaveric shoulders in which measurements were obtained on roentgenogram images. However, due to the characteristics of the imaging modality, the results were easily influenced by the positions of the samples.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Morphological Analysis of the Suprascapular Notch in Patients with Arthroscopic Rotator Cuff Repair

Noh,

Lee,

Park

et al. 2024

Clin Orthop Surg

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Background The morphology of the suprascapular notch (SSN) and the ossification of the superior transverse suprascapular ligament (STSL) are risk factors for injury of the suprascapular nerve (SN) during arthroscopic shoulder procedures. The purpose of the current study was to compare preoperative clinical and radiologic characteristics between patients with and without STSL ossification and to evaluate SSN morphology in patients who underwent arthroscopic rotator cuff repair using a 3-dimensional (3D) reconstructed model. Methods Patients who underwent arthroscopic rotator cuff repair and were given a computed tomography (CT) scan from March 2018 to August 2019 were included in this study. Patients were divided into 2 groups: those without STSL ossification (group I) and those with STSL ossification (group II). Tear size of the rotator cuff and fatty infiltration of rotator cuff muscles were assessed in preoperative magnetic resonance imaging. The morphology of the SSN was classified following Rengachary’s classification. The transverse and vertical diameters of the SSN and the distances from anatomical landmarks to the STSL were measured. All measurements were completed using a 3D CT reconstructed scapula model. Results A total of 200 patients were included in this study. One hundred seventy-eight patients (89.0%) without STSL ossification were included in group I, and 22 patients (11.0%) with STSL ossification were included in group II. Group II showed a significantly advanced age (61.0 ± 7.4 vs. 71.0 ± 7.3 years, p < 0.001) and a shorter transverse diameter of SSN (10.7 ± 3.1 mm vs. 6.1 ± 3.7 mm, p < 0.001) than group I. In the logistic regression analysis, age was an independent prognostic factor for STSL ossification (odds ratio, 1.201; 95% confidence interval, 1.112–1.296; p < 0.001). Patients in type VI showed significantly shorter transverse diameters than other types ( p < 0.001). The patient with type I showed a significantly shorter distance from the articular surface of the glenoid to the SSN than those with other types ( p < 0.001). Conclusions In the 3D morphological analysis, age was the independent factor associated with STSL ossification in patients who underwent arthroscopic rotator cuff repair. Type VI showed significantly shorter transverse diameters than other types. Type I showed a significantly shorter distance from the articular surface of the glenoid to the SSN than other types.

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“…Previous studies have identified a narrow or V-shaped SSN may be a predisposition for SN entrapment (Rengachary et al,1979;Natsis et al, 2007). A better understanding of the shape of the SSN dimensions, and its distances from known anatomic landmarks is particularly important in clinical practice (Dietrich et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Clinical evaluation of the shape of the suprascapular notch—an ultrasonographic and computed tomography comparative study: Application to shoulder pain syndromes

et al. 2015

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The most common site of suprascapular nerve compression and injury is the suprascapular notch. The aim of this study was to assess the sensitivity and specificity of sonography in determining the type of suprascapular notch (SSN). Thirty randomized patients (60 upper extremities) underwent USG examination of the shoulder area. The results were further compared with three-dimensional reconstructions of the scapulae obtained through CT examination to place the SSNs within a fivefold classification. For identification of type I, the sensitivity was 73.3% and the specificity 97.8%. For identification of type III, the values was 96.9% and 85.7%, respectively. Type II was not found in USG examination. Discrimination between type IV and V was not possible. The mean distance between the line connecting the edges of the SSN and the skin was 38 mm in right-handed patients and 34 mm in ambidextrous subjects. Ultrasonographic examination of the SSN is characterized by high specificity for type I, and high sensitivity for type III SSN. Discrimination between type IV and V of the SSN is not recommended based on sonographic evaluation.

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Arthroscopic decompression at the suprascapular notch: a radiographic and anatomic roadmap

Cited by 4 publications

References 33 publications

A computed tomography study on the correlation between the morphometry of the suprascapular notch and anthropometric measurements of the scapula

A computed tomography study on the correlation between the morphometry of the suprascapular notch and anthropometric measurements of the scapula

Three-Dimensional Morphological Analysis of the Suprascapular Notch in Patients with Arthroscopic Rotator Cuff Repair

Clinical evaluation of the shape of the suprascapular notch—an ultrasonographic and computed tomography comparative study: Application to shoulder pain syndromes

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