This is a narrative review defining a four-stage clinical, arthroscopic, and histologic framework for idiopathic adhesive capsulitis. It asks how to match treatment to disease stage, from corticosteroid injection through supervised therapy to arthroscopic capsular release. The authors also outline the inflammatory-to-fibrotic pathophysiology underlying the syndrome.
When a patient presents with a painful stiff shoulder, your first job is to stage the disease, because the stage dictates the treatment. Inject the glenohumeral joint with local anesthetic: if motion normalizes, you have Stage 1 with painful synovitis and injection is both diagnostic and therapeutic. If pain resolves but motion stays limited, you are in Stage 2 with early capsular fibrosis.
The practical mental model is inflammation early, fibrosis late. This is why corticosteroid works in Stages 1 and 2 but has no role in Stages 3 and 4 once the inflammatory phase has burned out. The timing data is the pearl to carry: earlier treatment means dramatically faster recovery, so do not simply reassure and wait.
For refractory late Stage 2 and Stage 3 disease, arthroscopic capsular release before manipulation reduces the force needed and lets you address concomitant pathology, while avoiding the inferior recess to protect the axillary nerve.
This is a narrative review defining a four-stage clinical, arthroscopic, and histologic framework for idiopathic adhesive capsulitis. It asks how to match treatment to disease stage, from corticosteroid injection through supervised therapy to arthroscopic capsular release. The authors also outline the inflammatory-to-fibrotic pathophysiology underlying the syndrome.
When a patient presents with a painful stiff shoulder, your first job is to stage the disease, because the stage dictates the treatment. Inject the glenohumeral joint with local anesthetic: if motion normalizes, you have Stage 1 with painful synovitis and injection is both diagnostic and therapeutic. If pain resolves but motion stays limited, you are in Stage 2 with early capsular fibrosis.
The practical mental model is inflammation early, fibrosis late. This is why corticosteroid works in Stages 1 and 2 but has no role in Stages 3 and 4 once the inflammatory phase has burned out. The timing data is the pearl to carry: earlier treatment means dramatically faster recovery, so do not simply reassure and wait.
For refractory late Stage 2 and Stage 3 disease, arthroscopic capsular release before manipulation reduces the force needed and lets you address concomitant pathology, while avoiding the inferior recess to protect the axillary nerve.