28/03/2016
"Overall, this review has found a lack of evidence to inform on the use of knee orthoses for treating Patello Femoral Pain Syndrome."
"There is, however, very low quality evidence from clinically heterogeneous trials using different types of knee orthoses (knee brace, sleeve and strap) that using a knee orthosis did not reduce knee pain or improve knee function in the short term (under three months) in adults who were also undergoing an exercise programme for treating PFPS."
http://www.ncbi.nlm.nih.gov/pubmed/26645724
Cochrane Database Syst Rev. 2015 Dec 8;12:CD010513. doi: 10.1002/14651858.CD010513.pub2. Review