3D CT Assessment of the Relationship Between Humeral Head Alignment and Glenoid Retroversion in Glenohumeral Osteoarthritis

Sabesan, Vani J.; Callanan, Mark; Youderian, Ari R.; Iannotti, Joseph P.

doi:10.2106/jbjs.l.00856

Cited by 72 publications

(54 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…More recently, subluxation was measured relative to the scapular axis, first in 2D [23], and lately in 3D [11,24]. Our 3D measurement method extended the classic 2D measurement proposed by Walch et al [10,23].…”

Section: Discussionmentioning

confidence: 90%

A semi-automated quantitative CT method for measuring rotator cuff muscle degeneration in shoulders with primary osteoarthritis

Terrier¹,

Ston²,

Dewarrat³

et al. 2017

Orthopaedics & Traumatology: Surgery & Research

View full text Add to dashboard Cite

a b s t r a c tBackground: Rotator cuff muscle degeneration is an important parameter to consider when planning shoulder arthroplasty. Hypothesis: We hypothesized that rotator cuff muscle degeneration is correlated with scapulohumeral subluxation in patients planned for anatomical total shoulder arthroplasty (TSA). Materials and methods: We developed a semi-automated quantitative CT method to measure rotator cuff muscle degeneration, and retrospectively analyzed 107 preoperative shoulder CT scans of patients with primary osteoarthritis. On a standardized sagittal-oblique CT slice perpendicular to the scapular axis, two observers measured the cross-sectional areas of residual rotator cuff muscle tissues, normalized by the estimated area of healthy muscles. Muscle degeneration was quantified in a semi-automated manner, and divided into atrophy and fatty infiltration. Scapulohumeral subluxation was determined in 3D as the distance between the humeral head center and the glenoid surface center, projected on the same CT slice, and normalized by the humeral head radius. We tested all potential correlations between muscle degeneration and scapulohumeral subluxation. Results: Muscle degeneration, primarily due to atrophy, predominated in the supraspinatus; it varied from 0.8% to 88.8%. Scapulohumeral subluxation varied from 2.5% to 72.9%, and was mainly in a posterior and postero-superior orientation. There was a significant but weak correlation between the amount of subluxation and both supraspinatus (R = 0.207, P = 0.032) and infraspinatus (R = 0.225, P = 0.020) degeneration. Inter-and intra-observer reproducibility of muscle degeneration measurements were both excellent respectively). Conclusion: This new semi-automated CT method allows to quantitatively and reproducibly measure rotator cuff muscle degeneration in shoulders with primary osteoarthritis. Muscle degeneration is weakly correlated with scapulohumeral subluxation in patients planned for anatomical TSA. Level of evidence: Level IV. Type of study: Diagnostic retrospective study.

show abstract

Section: Discussionmentioning

confidence: 90%

A semi-automated quantitative CT method for measuring rotator cuff muscle degeneration in shoulders with primary osteoarthritis

Terrier¹,

Ston²,

Dewarrat³

et al. 2017

Orthopaedics & Traumatology: Surgery & Research

View full text Add to dashboard Cite

show abstract

“…18,21 The 3-dimensional (3D) measurement of the shoulder has been shown to improve the reliability of glenohumeral measurements as it seems to overcome these inherent positional errors of 2D CT scans. 1,8,12,15,16,20,22,25,26 Therefore, a 3D measuring method could improve the reliability of the posterior subluxation index measurement.…”

mentioning

confidence: 99%

Accuracy of the glenohumeral subluxation index in nonpathologic shoulders

Jacxsens¹,

Tongel²,

Willemot³

et al. 2015

Journal of Shoulder and Elbow Surgery

View full text Add to dashboard Cite

“…The relationship between glenoid retroversion and HGA is less dependent on the amount of glenoid retroversion. Sabesan et al found no correlation between HGA and absolute glenoid version or the amount of bone loss in B2 glenoids, as these relationships are also likely impacted by the amount of posterior humeral head subluxation [6].…”

Section: Defined This Translation In Twomentioning

confidence: 99%

“…They described humeral glenoid alignment (HGA) as translation relative to the center of the glenoid fossa and humeral scapular alignment (HSA) as translation relative to the axis of the scapula [6] (Fig. 4).…”

Section: Defined This Translation In Twomentioning

confidence: 99%

Surgical management of the biconcave (B2) glenoid

Donohue

Ricchetti

Iannotti

2016

Curr Rev Musculoskelet Med

Self Cite

View full text Add to dashboard Cite

Glenohumeral osteoarthritis produces a wide spectrum of glenoid pathology. The B2 glenoid is defined by asymmetric posterior bone loss with the development of a biconcavity and posterior translation of the humeral head. Progressive bone loss results in increasing glenoid retroversion, which must be corrected during anatomic shoulder arthroplasty. The goals of arthroplasty should also include centering the humeral head and restoring the normal glenoid joint line. When there is minimal bone loss, this may be accomplished with a standard glenoid component and asymmetric reaming. More significant bone loss requires bone grafting or the use of an augmented glenoid component. Reverse shoulder arthroplasty is also an option for older patients or patients with severe bone loss.

show abstract

3D CT Assessment of the Relationship Between Humeral Head Alignment and Glenoid Retroversion in Glenohumeral Osteoarthritis

Abstract: The importance of this study is that it presents quantitative data and clear guidelines to define two measurements of glenohumeral alignment as separate and important variables. The clinical relevance of these methods will be further defined when they are correlated with clinical outcomes.

Cited by 72 publications

References 25 publications

A semi-automated quantitative CT method for measuring rotator cuff muscle degeneration in shoulders with primary osteoarthritis

A semi-automated quantitative CT method for measuring rotator cuff muscle degeneration in shoulders with primary osteoarthritis

Accuracy of the glenohumeral subluxation index in nonpathologic shoulders

Surgical management of the biconcave (B2) glenoid

Contact Info

Product

Resources

About