Impingement Syndrome of the Shoulder | Florida Orthopaedic Institute
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Impingement Syndrome of the Shoulder

OVERVIEW

Shoulder injuries are often debilitating and potentially life-inhibiting. One specific problem is called swimmer’s shoulder, or thrower’s shoulder, which is medically is known as shoulder impingement syndrome.

ANATOMY

Your shoulders are complex structures made up of several key parts. Two such features are the shoulder blade and the rotator cuff. Thrower’s or swimmer’s shoulder occurs when the shoulder blade’s outer region repeatedly makes contact with the rotator cuff. Scientifically, this abnormal occurrence is referred to as impingement, hence the name shoulder impingement syndrome.

DESCRIPTION

As shoulder impingement progresses, the constant pressure causes the rotator cuff to experience increasing levels of irritation and damage, which eventually leads to many unpleasant and possibly debilitating symptoms.

CAUSES

Shoulder impingement often results from several possible causes, including a congenital shoulder blade flaw, bone spurs, bursitis, and soft tissue damage.

The part of the shoulder blade responsible for causing impingement is a bone-like structure called the acromion. Some are people born with this structure unusually shaped instead of flat. The acromion rubs against surrounding bones, muscles, and soft tissues in such cases.

As you age, you are at greater risk for developing a condition known as bone spurs. These growths are sharp edges typically developing where bones and joints meet. Should this occur in your shoulder blade, your risk of shoulder impingement syndrome dramatically increases.

Your shoulder contains many liquid-filled sacs called bursa. They are located between the shoulder blade and surrounding soft tissues like tendons. When they become inflamed or irritated, a condition called bursitis occurs, and impingement can result.

Should nearby soft tissues like tendons become damaged or torn, shoulder impingement syndrome can occur.

RISK FACTORS

Your risk is significantly increased if you take part in sports requiring repeated throwing motions or intense shoulder movement. Specific sports include:

  • Baseball pitching.
  • Swimming.
  • Tennis.
  • Volleyball.
  • Weightlifting.

If your job requires constant shoulder movements like painting, carpentry, and window washing, your chances of developing shoulder impingement syndrome increase.

Natural age-related shoulder structure deterioration can also result in shoulder impingement syndrome.

Moreover, the condition could occur following events capable of causing serious and acute shoulder trauma such as falls and car accidents.

SYMPTOMS

The most clear-cut symptom of shoulder impingement syndrome is pain. This discomfort can:

  • Worsen when you lift your arms or weighty objects.
  • Travel from your shoulder’s frontal region to your arm’s side.
  • Intensify during the night and interfere with your ability to sleep.
  • Is more noticeable when you lie on the affected shoulder.

You might have redness, tenderness, or swelling in the injured shoulder, and increasing stiffness or weakness, making routine activities, or even moving your shoulder difficult.

Usually, symptoms develop over a period ranging anywhere from a couple of weeks to several months.

COMPLICATIONS

If not given proper medical attention, shoulder impingement syndrome will more than likely worsen, resulting in severe pain, mobility problems, and potentially even permanent shoulder damage. Shoulder impingement syndrome could also increase your risk of more serious injuries such as tears to your rotator cuff and biceps muscle tendon.

DIAGNOSIS

Typically, your doctor or orthopedic specialist will begin an evaluation by asking you several important questions such as:

  • If you are physically active.
  • The specific sports or activities you take part in.
  • If your job requires continual shoulder movements.
  • When your shoulder pain started.
  • If any actions or movements worsen your discomfort.

Should your doctor suspect shoulder impingement syndrome, they will likely perform a complete visual examination of the shoulder. During this diagnosis phase, they will pay close attention to any redness or swelling found in your shoulder region.

After visual evaluation, your doctor may test your shoulder’s strength and mobility.

If they cannot reach a firm conclusion or wish to rule out conditions causing similar symptoms, they may order internal imaging tests such as X-rays and MRI scans (Magnetic Resonance Imaging).

TREATMENT OVERVIEW

Treatment often centers on identifying and correcting the impingement’s underlying cause while helping you regain full function of the affected shoulder. In a large percentage of cases, improvement occurs following non-surgical therapy. The most serious cases or those not responding to traditional treatment efforts may need surgery.

NON-SURGICAL TREATMENT OPTIONS:

Mild to relatively moderate incidents often respond to significant periods of rest. This inactivity allows your shoulder to heal. Moreover, the application of ice packs is also often effective in reducing swelling or redness.

If you experience noticeable pain or discomfort interferes with your ability to perform even the most basic activities, over-the-counter pain-relievers and anti-inflammatory medications can prove beneficial.

More moderate or particularly painful cases may need steroid injections. These powerful drugs can quickly reduce inflammation and promote healing.

Regardless of your case’s severity, you will likely need to undergo a course of physical therapy. PT, commonly abbreviated and referred to, is a collection of exercises trained physical therapists design specifically for you with your doctor’s input. PT exercises are geared towards restrengthening your shoulder and recapturing lost motion ranges.

SURGICAL PROCEDURES

The most serious cases or those not responding to the previously mentioned treatments may need surgery.

One such surgery removes a part of the shoulder blade to create more room for the rotator cuff. This operation is called an arthroscopic shoulder decompression. It is performed using a minimally invasive piece of equipment called an arthroscope.

Severe cases of shoulder impingement syndrome or those that led to other shoulder injuries might need open surgery, requiring larger incisions.

PROGNOSIS

Researchers have found that non-surgical treatments typically produce favorable results in as many as 60 percent of those diagnosed with shoulder impingement syndrome. Recovery typically occurs over a period of weeks to months. Surgical procedures are also usually very effective. Recovery times will vary depending on many underlying factors.

NEXT STEPS

If you believe you may have shoulder impingement syndrome, call us today. Talk to your Florida Orthopaedic Institute physician to learn more.

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