A Trial Comparing Glenohumeral Joint Steroid Injection Versus Suprascapular Nerve Block in Patients With Frozen Shoulder

The aim of this study is to determine if there is any difference in terms of pain relief in patients with frozen shoulder, when given a steroid injection as a suprascapular nerve block compared to a glenohumeral joint intra-articular injection. The investigators hypothesis is that there is a significant difference in terms of pain relief at 3 months, 6 months and 1 year between a steroid injection as a suprascapular nerve block compared to a glenohumeral joint intra-articular injection. Participants who attend the orthopaedic clinic and are diagnosed with unilateral frozen shoulder and who are suitable to be treated with a steroid injection will be identified. If the participant consents to having a steroid injection, he/she will then be invited to participate in the trial where they will have an injection either into the glenohumeral joint (ball and socket joint of the shoulder) or as a suprascapular nerve block (injection adjacent to a nerve over the shoulder blade) under ultrasound guidance. Participants will then be followed up at 3, 6 and 12 months after their injection and asked to complete a set of questionnaires assessing pain, function and movement. The results of the groups will then be compared to see if one treatment is superior to the other.