Frozen shoulder, or adhesive capsulitis, is a condition where the connective tissue surrounding the shoulder joint thickens and tightens, causing significant pain and a restricted range of motion. According to the American Academy of Orthopaedic Surgeons (AAOS), it primarily affects women between ages 40 and 60, with approximately 5% of the general population experiencing the condition at some point.
How Frozen Shoulder Progresses Through Three Stages
Adhesive capsulitis doesn’t happen overnight. It typically evolves through three distinct phases, according to Nancy R. Kirsch, PT, DPT, PhD, chair of rehabilitation and movement sciences at Rutgers.
- The Freezing Stage: The shoulder gradually stiffens. Inflammation of the synovial membrane—the lining of the shoulder joint—leads to synovitis, which causes pain and a decrease in mobility.
- The Frozen Stage: While pain may begin to subside, stiffness increases. Adhesions form as the shoulder capsule thickens and tightens, further limiting movement.
- The Thawing Stage: The shoulder slowly regains its range of motion. Pain continues to drop, though some stiffness may persist.
Recovery timelines vary. While many people see improvement within 18 to 24 months, Kirsch notes that some individuals experience limited movement and pain for several years.
The Link Between Menopause and Shoulder Stiffness
There is a strong correlation between the onset of frozen shoulder and the menopausal transition. Dhinu Jayaseelan, DPT, an associate professor at George Washington University School of Medicine & Health Sciences, explains that hormonal shifts likely drive this connection. Estrogen helps regulate inflammation and collagen; as estrogen levels drop during menopause, the risk of adhesive capsulitis may increase.
Jayaseelan notes that preliminary evidence suggests hormone replacement therapies (HRT) might decrease the risk of developing the condition, though he emphasizes that more research is required to confirm this link.
Common Causes and Risk Factors
In many cases, there is no clear trigger. Gregory Cvetanovich, MD, an orthopedic surgeon at The Ohio State University Wexner Medical Center, states that the exact cause is often unknown. However, specific risk factors and triggers do exist:
- Injury and Surgery: Dr. Cvetanovich notes that frozen shoulder can develop after a shoulder injury or surgery, particularly if the joint isn’t mobilized shortly after the event.
- Systemic Health Conditions: There is a documented link between adhesive capsulitis and conditions such as type 2 diabetes and hypothyroidism, according to Dr. Cvetanovich.
- Inflammation: Natasha Trentacosta, MD, a sports medicine specialist at Cedars-Sinai Orthopaedics, explains that the shoulder capsule becomes inflamed and scars, which restricts the joint’s normal range of motion.
Treatment Options for Adhesive Capsulitis
While the condition can be slow to resolve, it is treatable. Dr. Trentacosta recommends an evaluation by a sports medicine doctor or orthopedic surgeon to create a tailored plan. Common interventions include:
Physical Therapy and Exercise
Exercise is often the primary tool for recovery. Jayaseelan suggests manual therapy, such as targeted massage, and specific movements to regain mobility, including:
- Sliding the arm across the chest or up a wall.
- Using a bar or the non-impacted arm to stretch the frozen shoulder.
- Gentle pendulum circles (letting the arm hang and moving it in circles).
- Using weighted objects to stretch the top of the shoulder.
However, caution is necessary. Dr. Cvetanovich warns that overly vigorous stretching or strengthening can aggravate inflammation and potentially worsen the condition.
Medical Interventions
Depending on the severity, Dr. Trentacosta notes that treatment may involve oral medications or injections directly into the shoulder joint to manage pain and inflammation. For those with diabetes or hypothyroidism, treating the underlying systemic condition may also help improve outcomes.
Frequently Asked Questions
Can frozen shoulder go away on its own?
Yes, it typically follows a “thawing” process, but it can take up to two years. Early intervention is recommended to shorten the duration of the disease, according to Dr. Trentacosta.
Is it just a “stiff shoulder” or frozen shoulder?
General stiffness from poor posture or a “funny” sleeping position usually resolves quickly. Frozen shoulder is characterized by a progressive loss of motion and significant pain that impacts daily activities.
Who is most at risk?
Women aged 40 to 60, individuals with diabetes, and those recovering from shoulder surgeries are at the highest risk according to AAOS and medical experts.