Summary
Background
Pain in the shoulder is a common problem in overhead sports and at times goes along with atrophy of the supra- and infraspinatus muscles. A neuropathy of the suprascapular nerve is one possible reason. The aim of the study was to examine the suprascapular nerve in Austrian high-performance beach volleyball players.
Methods
In this cross-sectional study, 18 high-performance beach volleyball players were included. An electrophysiological examination was performed consecutively. Nerve conduction studies of the suprascapular nerve were performed bilaterally. Needle electromyography was done for the infraspinatus muscle of the dominant arm. Additionally, pain and muscle atrophy were evaluated.
Results
No acute or chronic neurogenic changes in the infraspinatus muscle were seen in any player, although atrophy of the suprascapularis innervated muscles was present in five players.
Conclusions
A lesion of the suprascapular nerve could not be shown in any of the players. Therefore, a biomechanical cause has to be considered for the clinical symptoms in the present study population.
Zusammenfassung
Grundlagen
Schulterbeschwerden treten häufig bei Überkopfsportlern auf und gehen oftmals mit einer Atrophie des M. supra- und infraspinatus einher. Eine mögliche Ursache für diese Beschwerden stellt eine Neuropathie des N. suprascapularis dar. Ziel dieser Studie war die Untersuchung des N. suprascapularis bei Österreichischen Elite-Beach-Volleyballspielern.
Methodik
In diese Beobachtungsstudie wurden 18 Elite-Beach-Volleyballspieler eingeschlossen. Eine elektrophysiologische Untersuchung erfolgte konsekutiv. Eine Nervenleitgeschwindigkeitsmessung vom N. suprascapularis wurde beidseits mittels Oberflächenelektroden durchgeführt. Weiters erfolgte eine Untersuchung des M. infraspinatus vom dominanten Arm mittels Nadelelektromyographie. Zusätzlich wurde Schmerz und Muskelatrophie erhoben.
Ergebnisse
Es konnten keine akuten oder chronischen Veränderungen im M. infraspinatus gefunden werden, obwohl sich bei 5 Spielern eine Atrophie der vom N. suprascapularis innervierten Muskulatur zeigte.
Schlussfolgerungen
Es konnte keine Läsion des N. suprascapularis gefunden werden. Die Beschwerden in unserer Studienpopulation könnten durch biomechanische Gründe ausgelöst worden sein.
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Compliance with ethical guidelines
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.
Informed consent was obtained from all patients for being included in the study.
Conflict of interest
The authors declare that they have no conflict of interest.
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Pieber, K., Herceg, M., Fialka, C. et al. Is suprascapular neuropathy common in high-performance beach volleyball players? A retrospective analysis. Wien Klin Wochenschr 126, 655–658 (2014). https://doi.org/10.1007/s00508-014-0595-4
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DOI: https://doi.org/10.1007/s00508-014-0595-4