Posterior subacromial injections are superior in differentiating a rotator cuff from a biceps pathology: A cadaveric study

Gopinath Duraiswamy, Vishesh Khanna, Prabhudev Prasad, Senthil N. Sambandam, Varatharaj Mounasamy

Research output: Contribution to journalArticlepeer-review

Abstract

Backgroud: the ideal route and accuracy of subacromial injections in shoulder pathologies are often questioned. This study aimed at comparing anterior and posterior injections in terms of subacromial space dye localization and diagnostic accuracy. We hypothesized that posterior injections would prove more accurate. Methods: lidocaine-dye mix was injected posteriorly and anteriorly in five cadaveric shoulders each. Presence of dye was ascertained at dissection. Results: All five posterior injections remained confined to the subacromial space. In all five anteriorly injected shoulders, the dye was seen leaking from the subacromial space into bicipital groove. Conclusions: Varying accuracies of anterior [69–90%] and posterior [56–80%] subacromial injections have been reported. We observed both routes to be equally accurate [100%]. The dye exclusively remained within the subacromial space with posterior injections. This has higher diagnostic value in differentiating subacromial and long head of biceps pathologies. The anterior approach may have a better therapeutic role in combined subacromial and biceps pathologies.

Original languageEnglish (US)
Pages (from-to)89-92
Number of pages4
JournalJournal of Orthopaedics
Volume19
DOIs
StatePublished - May 1 2020
Externally publishedYes

Keywords

  • Anterior route
  • Cadaveric study
  • Long head of biceps
  • Posterior route
  • Rotator cuff with biceps pathology
  • Subacromial injections

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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