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. 2020 Dec;12(1 Suppl):31-39.
doi: 10.1177/1758573219826341. Epub 2019 Feb 11.

Medium to long-term results of a recessed glenoid for glenoid resurfacing in total shoulder arthroplasty

Mark Ross  1   2   3 , Jean-Marc Glasson  4 , Justin Alexander  1   3 , Christopher G Conyard  3 , Benjamin Hope  1   3 , Owen Jenkins  3 , Phillip Fr Duke  1
Affiliations

Medium to long-term results of a recessed glenoid for glenoid resurfacing in total shoulder arthroplasty

Mark Ross et al. Shoulder Elbow. 2020 Dec.

Abstract

Background: Recessed mini-glenoid components provide an alternative to total shoulder replacement that may avoid some of the known shortcomings and complications associated with shoulder hemiarthroplasty or standard glenoid components in difficult cases. This study reports survivorship, radiological and clinical outcomes of a recessed mini-glenoid implant in a consecutive cohort.

Methods: Retrospective cohort study reporting outcomes of 28 consecutive shoulders (27 patients) following total shoulder replacement using a recessed, cemented mini-glenoid implant at two sites.

Results: The most frequent diagnosis was primary osteoarthritis (79%); glenoid morphology was Walch Type A (67%), B1 15%, B2 10% and C 10%. At final follow-up, pain was 16.3 (SD = 23.1), American Shoulder and Elbow Score was 64.5 (SD = 31.9) and (normalized) Constant score was 83.0 (SD = 20.7). Implant survivorship at average final follow-up of seven years (3-13) was 96.4%. Seven mini-glenoids showed small peripheral radiolucent lines at one-year X-ray follow-up but were non-progressive on subsequent imaging.

Discussion: Recessed polyethylene mini-glenoid is an attractive alternative for shoulder arthroplasty and provides an intermediate solution between standard glenoid components and hemiarthroplasty. Our medium to long-term results demonstrate reliable clinical outcomes, absence of glenoid erosion, low complication rate and satisfactory implant survivorship.

Keywords: custom implant; glenoid; osteoarthritis; recessed; shoulder arthroplasty; shoulder replacement.

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Conflict of interest statement

Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1.
Figure 1.
(a) Prototype implant as utilized in this study cohort between 2001 and 2010. (b) Technical drawing of the recessed glenoid implant.
Figure 2.
Figure 2.
(a) Forward flexion (FF) and external rotation (ER) measures at baseline (pre-op) and last follow-up. (b) Patient-reported Global Rating of Change score for symptoms and function.
Figure 3.
Figure 3.
Ten-year radiographs after implantation in Type A centred arthritis.
Figure 4.
Figure 4.
A 56-year-old male, bilateral dysplastic glenoids, bilateral recessed glenoids. Right implant positioned in only available bone stock at base of coracoid, flat glenoid reamed to concavity centred on implant location.
Figure 5.
Figure 5.
Seven-year clinical follow-up bilateral recessed glenoids in glenoid hypoplasia with retroversion.
Figure 6.
Figure 6.
Example of recessed mini-glenoid with humeral resurfacing.
See this image and copyright information in PMC

References

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