Adhesive capsulitis, sometimes referred to as frozen shoulder, is a condition in which the shoulder joint becomes stiff and painful. The condition is usually divided into four stages:
1. The Freezing Stage: This is the first and most painful stage, which typically lasts around 6-9 months. Symptoms include increasing shoulder pain and stiffness, reduced range of motion, and a decrease in the ability to move the shoulder normally.
2. The Frozen Stage: During this stage, pain may decrease, but the shoulder joint is still stiff and movement is difficult. This stage may last up to 4-6 months.
3. The Thawing Stage: During this stage, the shoulder begins to loosen, and the range of motion gradually increases. This stage may last around 6-9 months.
4. The Resolution Stage: During this stage, the shoulder is nearly back to normal. Range of motion is usually close to pre-injury levels, and pain is minimal.