Inferior tilt of the glenoid component does not decrease scapular notching in reverse shoulder arthroplasty: results of a prospective randomized study

2012 ◽  
Vol 21 (5) ◽  
pp. 641-646 ◽  
Author(s):  
T. Bradley Edwards ◽  
George J. Trappey ◽  
Clayton Riley ◽  
Daniel P. O’Connor ◽  
Hussein A. Elkousy ◽  
...  
Keyword(s):  
Shoulder Arthroplasty ◽  
Reverse Shoulder Arthroplasty ◽  
Randomized Study ◽  
Prospective Randomized Study ◽  
Glenoid Component ◽  
Scapular Notching

Glenosphere design affects range of movement and risk of friction-type scapular impingement in reverse shoulder arthroplasty

2018 ◽  
Vol 100-B (9) ◽  
pp. 1182-1186 ◽  
Author(s):  
B. S. Werner ◽  
J. Chaoui ◽  
G. Walch
Keyword(s):  
Internal Rotation ◽  
Shoulder Arthroplasty ◽  
External Rotation ◽  
Reverse Shoulder Arthroplasty ◽  
Large Diameter ◽  
Glenoid Component ◽  
Range Of Movement ◽  
Scapular Notching ◽  
Component Size ◽  
Centre Of Rotation

Aims Scapular notching is a frequently observed radiographic phenomenon in reverse shoulder arthroplasty (RSA), signifying impingement of components. The purposes of this study were to evaluate the effect of glenoid component size and glenosphere type on impingement-free range of movement (ROM) for extension and internal and external rotation in a virtual RSA model, and to determine the optimal configuration to reduce the incidence of friction-type scapular notching. Materials and Methods Preoperative CT scans obtained in 21 patients (three male, 18 female) with primary osteoarthritis were analyzed using modelling software. Two concurrent factors were tested for impingement-free ROM and translation of the centre of rotation: glenosphere diameter (36 mm vs 39 mm) and type (centred, 2 mm inferior eccentric offset, 10° inferior tilt). Results Glenosphere size was most predictive of increased extension and external rotation, whereas lateralization of the centre of rotation was the most predictive factor for internal rotation. A larger diameter of glenosphere combined with a 10° tilted configuration demonstrated superior values for extension and external rotation, whereas the eccentric component improved internal rotation by a mean 8.9° (standard deviation 2.7°) compared with a standard concentric glenosphere. Conclusion Glenosphere configuration can be modified to increase range of movement in RSA. Friction-type scapular notching was most effectively reduced by use of a large-diameter glenosphere with 10° inferior tilt. Cite this article: Bone Joint J 2018;100-B:1182–6.

scholarly journals Case Report: Watching and Waiting? A Case of Incomplete Glenosphere Seating With Spontaneous Reversal in Reverse Shoulder Arthroplasty

2020 ◽  
Vol 4 ◽  
pp. 247154922094914
Author(s):  
Micah L MacAskill ◽  
Rachel J Thomas ◽  
Leslie A Barnes
Keyword(s):  
Conservative Management ◽  
Revision Surgery ◽  
Shoulder Arthroplasty ◽  
Reverse Shoulder Arthroplasty ◽  
Glenoid Component ◽  
Viable Option ◽  
Scapular Notching ◽  
Spontaneous Reversal ◽  
No Gold Standard ◽  
Design Factors

Introduction: Reverse shoulder arthroplasty is a useful procedure with broadening applications, but it has the best outcomes when used for rotator cuff tear arthropathy. However, this procedure is not without complications. While scapular notching and aseptic loosening are more common complications that have been extensively studied in the literature, dissociation of the glenoid component and incomplete glenosphere seating has not received much attention. Specifically, little research has explored appropriate management of incomplete seating of the glenosphere component, and no gold standard for treatment of this complication has emerged. Methods: In the case described here, an elderly patient with an incompletely seated glenosphere component post-operatively opted to pursue conservative management in order to avoid revision surgery if possible. Results: The partially engaged, superiorly directed components in this case exhibited spontaneous complete and symmetric seating of the glenosphere between six and twelve months post-operatively, indicating that conservative management of this complication in low-demand patients may be a viable option to avoid the risks associated with revision surgery. Conclusion: Further research should be pursued to explore what patient and prosthesis design factors may be suited to observation with serial radiographs when incomplete seating of the glenosphere component occurs.

scholarly journals Study on glenoid component in anatomical total shoulder arthroplasty in Nagapattinam district

2021 ◽  
Vol 7 (2) ◽  
pp. 223
Author(s):  
A. Palanivel
Keyword(s):  
Outcome Measures ◽  
Shoulder Arthroplasty ◽  
Reverse Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Randomized Study ◽  
Shoulder Function ◽  
Glenoid Component ◽  
Screw Breakage ◽  
Pain At Rest

<p class="abstract"><strong>Background:</strong> Depending upon the mechanism of dysfunction or injury a shoulder arthroplasty can either be a partial or total replacement. Shoulder arthroplasty surgery has shown remarkable progress during the last few decades. The objective was to study the effect of prosthesis positioning in reverse shoulder arthroplasty on radiological and clinical outcomes.</p><p class="abstract"><strong>Methods:</strong> This was a prospective comparative non-randomized study of 37 patients who underwent reverse shoulder arthroplasty (RSA) in Government District Head Quarters Hospital Nagapattinam with a follow-up ranging from March 2018 to January 2019 (11 months).<strong></strong></p><p class="abstract"><strong>Results:</strong> Grade 1 indicated a notch limited to the scapular pillar, grade 2 reached the inferior screw of the baseplate, grade 3 extended beyond the inferior screw and grade 4 reached the central peg of the baseplate. Glenoid loosening was defined as radiolucencies under the baseplate or around the peg or screws, screw breakage, or glenoid migration.</p><p class="abstract"><strong>Conclusions:</strong> Outcome measures were improved regardless of the LHO. At 3 months follow-up increased LHO harmed shoulder function and gave more shoulder pain at rest and exertion but did not affect the quality of life, health status, or ROM. At 12 months follow-up, LHO had no relation with the outcome measures. Further studies are warranted to investigate the influence of LHO on long-term prosthetic survival.</p>

scholarly journals Treatment of instability with scapular notching and glenoid component loosing by partial mixed different implant revision

2020 ◽  
Vol 23 (4) ◽  
pp. 190-193
Author(s):  
Young Woo Chung ◽  
Woo Jin Shin ◽  
Ki Yong An
Keyword(s):  
Aseptic Loosening ◽  
Shoulder Arthroplasty ◽  
Reverse Shoulder Arthroplasty ◽  
Glenoid Component ◽  
Scapular Notching ◽  
Arthroplasty Revision

In general, reverse shoulder arthroplasty revision is performed using the same implant for both the humerus and glenoid components. However, the authors of the present case used different implants from what was used previously for treating instability with scapular notching and glenoid aseptic loosening and report the case.

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