| Inclusion criteria | Exclusion criteria |
|---|---|
| 1 Age >16 years | 1 Acromioclavicular joint tenderness |
| 2 Post-traumatic pain | 2 Chronic shoulder disease |
| 3 Greater tuberosity tenderness | 3 Glenohumeral crepitus |
| 4 Painful arc | 4 Asymetrical external rotation |
| 5 Pain on resisted abduction | 5 Complete rotator cuff tear |
| 6 Normal radiographs | 6 Diabetes |
| 7 MRC power 5 of abduction | 7 Anticoagulated |
| 8 Complete resolution of symptoms post-bupivicaine block | 8 Failure to consent |