%0 Journal Article %T Spontaneous Recurrent Hemarthrosis of the Knee: A Report of Two Cases with a Source of Bleeding Detected during Arthroscopic Surgery of the Knee Joint %A Eisuke Nomura %A Hiroya Sakai %A Hisatada Hiraoka %J Archive of "Case Reports in Orthopedics". %D 2016 %R 10.1155/2016/1026861 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5039273/