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BioMed Research International
Volume 2014, Article ID 613601, 7 pages
http://dx.doi.org/10.1155/2014/613601
Research Article

Morphological and Radiological Study of Ossified Superior Transverse Scapular Ligament as Potential Risk Factor of Suprascapular Nerve Entrapment

1Department of Angiology, Medical University of Łódź, Ulica Narutowicza 60, 90-136 Łódź, Poland
2Clinic of Orthopaedics and Paediatric Orthopaedic, Medical University of Łódź, Ulica Drewnowska 75, 91-002 Łódź, Poland
3Clinic of Arthroscopy, Minimally Invasive Surgery and Sports Traumatology, Medical University of Łódź, Ulica Żeromskiego 113, 90-549 Łódź, Poland
4Department of Radiological and Isotopic Diagnosis and Therapy, Medical University of Łódź, Ulica Żeromskiego 113, 90-549 Łódź, Poland
5Department of Normal and Clinical Anatomy, Medical University of Łódź, Ulica Narutowicza 60, 90-136 Łódź, Poland

Received 30 January 2014; Revised 13 March 2014; Accepted 17 March 2014; Published 3 April 2014

Academic Editor: Clement M. L. Werner

Copyright © 2014 Michał Polguj et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The suprascapular notch is covered superiorly by the superior transverse scapular ligament. This region is the most common place of suprascapular nerve entrapment formation. The study was performed on 812 specimens: 86 dry scapulae, 104 formalin-fixed cadaveric shoulders, and 622 computer topography scans of scapulae. In the cases with completely ossified superior transverse scapular ligament, the following measurements were performed: proximal and distal width of the bony bridge, middle transverse and vertical diameter of the suprascapular foramen, and area of the suprascapular foramen. An ossified superior transverse scapular ligament was observed more often in men and in the right scapula. The mean age of the subjects with a completely ossified superior transverse scapular ligament was found to be similar than in those without ossification. The ossified band-shaped type of superior transverse scapular ligament was more common than the fan-shaped type and reduced the space below the ligament to a significantly greater degree. The ossified band-shaped type should be taken into consideration as a potential risk factor in the formation of suprascapular nerve entrapment. It could explain the comparable frequency of neuropathy in various populations throughout the world despite the significant differences between them in occurrence of ossified superior transverse scapular ligament.