Frozen shoulder is a frequently occurring condition which causes significant morbidity. Despite over a hundred years of treating this condition the definition, diagnosis, pathology and most efficacious treatments are still largely unclear. This systematic review of contemporary treatments for frozen shoulder reviews the evidence base behind physiotherapy, both oral and intra articular steroid, hydrodilatation, manipulation under anaesthesia and arthroscopic capsular release. Fundamental areas in which future research could be directed are identified, in particular in regards to the growing role of arthroscopic capsular release as a treatment.