Document Type



General Surgery (East Africa)


Background: Failure of fusion to any of the acromion physes at maturity may lead to an os acromiale. A radiological review into the prevalence of os acromiale in an indigenous East African population was performed using computer tomography (CT) imaging. The study aimed to demonstrate a lower prevalence of os acromiale in an urban population compared with cadaveric studies.

Methods: This was a cross-sectional study with consecutive sampling. CT scans of both shoulders obtained for non-shoulder pathology were used for the analysis. CT scanning was performed at a tertiary referral hospital from January 2019 to July 2020.

Results: Nine hundred eighty-two CT studies were eligible for the review. There were 148 os acromiale identified that were either pre-acromiale or mesoacromiale. The study found a 15% prevalence of os acromiale among an ethnic East African population, of which almost 40% were meso-acromiale and 60% were pre-acromiale, with no meta-acromiale.

Conclusion: The prevalence of os acromiale found in this study is similar to that observed in earlier cadaveric studies.

Publication (Name of Journal)

The Annals of African Surgery

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.