Frozen shoulder after trauma can be difficult to treat. Aggressive rehab is the first thing to do. If it shows improvement (even if not complete), then that is continued until no improvement is seen for 1 full month. Surgery is the next step and manipulation is the standard. However, it does not always address other associated problems such as rotator cuff tears (partial or full), cartilage injury etc. Therefore, Arthroscopic surgery is now the recommended treatment so that all problems can be addressed. This includes a “selective capsular release” which is basically a surgically controlled manipulation instead of “tearing” the capsule. The recurrence rate is much less. Patients with diabetes and hypothyroidism universally have a higher recurrence and may also get this on the other side.