Key Takeaways
- Shoulder impingement most often develops from repetitive overhead motion in sports, work, or daily activities.
- Poor posture and weak or imbalanced shoulder muscles can narrow the space around the rotator cuff and lead to irritation.
- Age-related wear and inflammation can make the tendons and bursa more vulnerable to impingement over time.
- Certain activities, like reaching overhead, sleeping on the affected side, or lifting, tend to make symptoms worse.
- Shoulder pain that lingers for more than a few weeks or limits daily activities should be evaluated by a specialist, and Dr. Brian Kelly offers experienced shoulder care for patients throughout the Pittsburgh area at his Sewickley and Moon Township offices.
Understanding Shoulder Impingement
Shoulder impingement, sometimes called swimmer's shoulder or tennis shoulder, happens when the top of the shoulder blade, known as the acromion, rubs against the rotator cuff tendons and the bursa underneath it. Over time, this rubbing causes inflammation, pain, and reduced range of motion. According to AAOS OrthoInfo, shoulder pain is one of the most common physical complaints, and the rotator cuff is a frequent source of that pain.
Understanding what causes shoulder impingement can help patients recognize the condition early and seek treatment before it progresses.
Common Causes of Shoulder Impingement
Repetitive Overhead Movements and Sports Injuries
The most frequent cause of shoulder impingement is repetitive overhead motion. AAOS OrthoInfo notes that young athletes who use their arms overhead for swimming, baseball, tennis, and volleyball are particularly at risk, along with people who do repetitive lifting or overhead work such as painting or construction.
Common activities linked to shoulder impingement include:
- Swimming and throwing sports.
- Tennis, volleyball, and other overhead racket or net sports.
- Painting, construction, or other jobs that involve reaching above the head.
- Weightlifting with poor overhead form.
Poor Posture and Muscle Imbalance
Rounded shoulders and a forward head posture can shrink the space available for the rotator cuff tendons, making impingement more likely. Weakness in the muscles that stabilize the shoulder blade, compared to the muscles that move the arm, can also throw off the mechanics of the joint. When the shoulder blade does not rotate properly during overhead movement, the rotator cuff has less room to move freely underneath the acromion.
Age-Related Wear and Inflammation
Shoulder impingement is not limited to athletes. It also becomes more common with age as the rotator cuff tendons gradually lose elasticity and the bursa becomes more prone to inflammation. Degenerative changes in the shoulder joint, along with general wear and tear, can narrow the subacromial space over the years, even without a specific injury.
Activities That May Worsen Symptoms
Once impingement develops, certain movements tend to aggravate the pain, including:
- Reaching overhead or behind the back.
- Lying on the affected shoulder at night.
- Lifting objects away from the body.
- Repeating the same overhead motion during work or sport without rest.
Patients often notice a dull ache that becomes sharper with these specific movements, along with weakness or a clicking sensation in the shoulder.
Shoulder Impingement vs. Other Common Shoulder Conditions
| Condition | Typical Cause | Common Symptoms |
|---|---|---|
| Shoulder Impingement | Repetitive overhead motion, posture, age-related wear | Pain reaching overhead, pain at night, weakness |
| Rotator Cuff Tear | Chronic impingement, sudden injury, or degeneration | Similar pain, plus loss of strength and motion |
| Shoulder Instability | Trauma, loose ligaments, weak rotator cuff | Popping, dislocation, feeling of the shoulder slipping |
| Shoulder Arthritis | Age-related cartilage wear | Stiffness, aching pain that worsens with activity |
When Shoulder Pain Should Be Evaluated by a Specialist
Mild shoulder discomfort often improves with rest, but certain signs point to a need for professional evaluation, including:
- Pain that lasts longer than two to three weeks despite rest.
- Night pain that interferes with sleep.
- Noticeable weakness when lifting the arm.
- Pain that limits basic tasks such as dressing or reaching for a seatbelt.
An orthopaedic evaluation can confirm whether the pain stems from impingement, a rotator cuff tear, instability, or another shoulder condition, and help guide the right treatment path.
Shoulder Impingement Treatment Options
Most cases of shoulder impingement respond well to conservative care before surgery is ever considered. Dr. Brian Kelly typically recommends a stepwise approach:
- Rest and activity modification to avoid aggravating overhead motions.
- Anti-inflammatory medication to reduce pain and swelling.
- Physical therapy to restore motion, then build strength in the rotator cuff and shoulder blade muscles.
- A steroid injection if pain persists despite therapy.
When conservative treatment does not relieve symptoms, arthroscopic surgery may be recommended to create more space for the rotator cuff. Dr. Kelly performs these procedures using minimally invasive techniques designed to reduce recovery time.
Find Relief From Shoulder Pain With Dr. Brian Kelly
Shoulder impingement can make everyday movement uncomfortable, but understanding the underlying cause is the first step toward lasting relief. Dr. Brian Kelly provides thorough evaluation and personalized treatment plans for patients throughout the Pittsburgh region dealing with shoulder impingement, rotator cuff irritation, and related conditions.
If shoulder pain is limiting daily activities, schedule an appointment with Dr. Brian Kelly to get an accurate diagnosis and a treatment plan for shoulder impingement built around your needs.
Frequently Asked Questions
What causes shoulder impingement?
Shoulder impingement is most often caused by repetitive overhead motion from sports or work, poor posture, muscle imbalance around the shoulder blade, or age-related wear on the rotator cuff tendons and bursa.
Why does my shoulder hurt when I raise my arm?
Pain when raising the arm typically happens because the space between the acromion and the rotator cuff narrows during overhead motion, causing the tendons and bursa to rub and become inflamed.
How is shoulder impingement treated without surgery?
Nonsurgical treatment usually includes rest, anti-inflammatory medication, physical therapy to strengthen the rotator cuff and shoulder blade muscles, and occasionally a steroid injection if pain does not improve.
How do I find a shoulder specialist near me in Pittsburgh?
Patients searching for a shoulder specialist near them can schedule a consultation with Dr. Brian Kelly at either the Sewickley or Moon Township office to have their shoulder pain evaluated and treated.
