The international health journals are known for publishing articles that have been peer-reviewed. (Oxford journals, 2015d). This tells quietly clearly that the article was peer-reviewed. If it had not been peer-reviewed, it may not have been published.
Also, information on the article given shows that it was first received on 20th March 2014, revised on 4th July 2014, accepted on 11th July 2014 and published on 24th September 2014. This whole process tells that the article has undergone was peer-review.
Again, the authors acknowledged one Prof. Dr. Khaled Emara, Orthopaedic surgeon at Ain Shams University, who happens to be an expert in the field of medicine for his input and recommendations as the paper was being edited.