Infraglenoidal scapular notching in reverse total shoulder replacement: a prospective series of 60 cases and systematic review of the literature

BMC Musculoskeletal Disorders

Peter E Müller⁴  Matthias F Pietschmann⁴  Georg Weber³  Josef Hochreiter³  Andreas Hölzer⁴  Patrick Vavken²  Andreas Leithner¹  Patrick Sadoghi¹ 

[1] Department of Orthopaedic Surgery, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria;Harvard Center for Population and Development Studies, Harvard School of Public Health, Boston, MA 02115, USA;Department of Orthopaedic Surgery, Krankenhaus Barmherzige Schwestern Linz, Seilerstätte 4, 4010 Linz, Österreich;Department of Orthopaedic Surgery, Ludwig-Maximilians-University Munich, Campus Grosshadern, Marchioninistrasse 15, 81377 Munich, Germany

关键词: clinical outcome;    instability;    notching;    Inverse shoulder prosthesis;   

Others  :  1158491
DOI  :  10.1186/1471-2474-12-101

 received in 2011-01-10, accepted in 2011-05-19,  发布年份 2011

【 摘 要 】

Background

The impact of infraglenoidal scapular notching in reversed total shoulder arthroplasty (RTSA) is still controversially discussed. Our goal was to evaluate its potential influence on subjective shoulder stability and clinical outcome. We hypothesized that subjective instability and clinical outcome after implantation of RTSA correlates with objective scapular notching.

Methods

Sixty shoulders were assessed preoperatively and at minimum 2-year follow-up for active range of motion and by use of the Oxford instability score, Rowe score for instability, Constant score for pain, Constant shoulder score, DASH score. All shoulders were evaluated on anterior-posterior and axillary lateral radiographic views. These X-ray scans were classified twice by two orthopaedic surgeons with respect to infraglenoidal scapular notching according to the classification of Nerot. Notching was tested for correlation with clinical outcome scores to the evaluated notching.

Results

We found no significant correlation between infraglenoidal scapular notching and clinical outcomes after a mid-term follow-up from 24 to 60 months, but at the final follow-up of 60 months and more, we did see statistically significant, positive correlations between infraglenoidal scapular notching and the Constant pain score as well as active range of motion. At mean follow-up of 42 months (range from 24 to 96 months) we found no significant correlation between subjective instability and infraglenoidal scapular notching.

Conclusions

We conclude that patients' subjective impression on their shoulders' stability is not correlating with radiological signs of infraglenoidal scapular notching. Nevertheless clinical parameters are affected by infraglenoidal scapular notching, at least in the long term

【 授权许可】

   
2011 Sadoghi et al; licensee BioMed Central Ltd.

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