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Chronic Shoulder Pain: (medical article)

Chronic Shoulder Pain: Part I. Evaluation and Diagnosis


Am Fam Physician. 2008 Feb 15;77(4):453-460.

  This is part I of a two-part article on chronic shoulder pain. Part II, “Treatment,” appears in this issue of AFP on page 493.

Shoulder pain is defined as chronic when it has been present for longer than six months. Common conditions that can result in chronic shoulder pain include rotator cuff disorders, adhesive capsulitis, shoulder instability, and shoulder arthritis. Rotator cuff disorders include tendinopathy, partial tears, and complete tears. A clinical decision rule that is helpful in the diagnosis of rotator cuff tears includes pain with overhead activity, weakness on empty can and external rotation tests, and a positive impingement sign. Adhesive capsulitis can be associated with diabetes and thyroid disorders. Clinical presentation includes diffuse shoulder pain with restricted passive range of motion on examination. Acromioclavicular osteoarthritis presents with superior shoulder pain, acromioclavicular joint tenderness, and a painful cross-body adduction test. In patients who are older than 50 years, glenohumeral osteoarthritis usually presents as gradual pain and loss of motion. In patients younger than 40 years, glenohumeral instability generally presents with a history of dislocation or subluxation events. Positive apprehension and relocation are consistent with the diagnosis. Imaging studies, indicated when diagnosis remains unclear or management would be altered, include plain radiographs, magnetic resonance imaging, ultrasonography, and computed tomography scans. Plain radiographs may help diagnose massive rotator cuff tears, shoulder instability, and shoulder arthritis. Magnetic resonance imaging and ultrasonography are preferred for rotator cuff disorders. For shoulder instability, magnetic resonance imaging arthrogram is preferred over magnetic resonance imaging.

Shoulder pain is responsible for approximately 16 percent of all musculoskeletal complaints,1 with a yearly incidence of 15 new episodes per 1,000 patients seen in the primary care setting.2 Part I of this two-part article will provide the primary care physician with a simple, effective approach to the diagnosis of chronic shoulder disorders such as rotator cuff pathology, adhesive capsulitis, acromioclavicular osteoarthritis, glenohumeral osteoarthritis, and instability. Part II, which appears in this issue of AFP (p. 493), discusses the treatments of chronic shoulder pain that are consistent with recent evidence-based guidelines.3,4 Shoulder pain is defined as chronic when it has been present for longer than six months, regardless of whether the patient has previously sought treatment. It can be divided into six diagnostic categories: (1) rotator cuff disorders, including tendinosis, full or partial thickness tears, or calcific tendinitis; (2) adhesive capsulitis; (3) glenohumeral osteoarthritis; (4) glenohumeral instability; (5) acromioclavicular joint pathology; and (6) other chronic pain, including less common shoulder problems and non-shoulder problems.

Clinical recommendation Evidence rating References

All patients should receive radiographs as part of the initial work-up for chronic shoulder pain.



Further testing of chronic shoulder pain, using imaging*, should be performed when the diagnosis remains unclear or the outcome would change management.



If acromioclavicular osteoarthritis is suspected, the acromioclavicular joint should be assessed for tenderness, and a cross-body adduction test should be performed to help confirm the diagnosis.



When rotator cuff injury is suspected, assess for night pain and pain with overhead activity.



When the patient has a painful shoulder with severely limited active and passive ranges of motion, a diagnosis of adhesive capsulitis should be considered.



*— Imaging options include magnetic resonance imaging, arthrography, computed tomography scan, and ultrasonography.

A = consistent, good-quality patient-oriented evidence; B = inconsistent or limited-quality patient-oriented evidence; C = consensus, disease-oriented evidence, usual practice, expert opinion, or case series. For information about the SORT evidence rating system, see page 410 or http://www.aafp.org/afpsort.xml.

Clinical Diagnosis


Table 1 511 summarizes the history and potentially associated shoulder conditions for patients with chronic shoulder pain. The age of the patient is an important initial consideration. Patients younger than 40 years are more likely to present with shoulder instability or mild rotator cuff disease (impingement, tendinopathy), whereas patients older than 40 years are at an increased risk for advanced, chronic rotator cuff disease (partial or complete tear), adhesive capsulitis, or glenohumeral osteoarthritis.35,1214

Table 1
History Findings and Associated Shoulder Disorders
History Associated condition


If younger than 40 years: instability, rotator cuff tendinopathy

If older than 40 years: rotator cuff tears, adhesive capsulitis, glenohumeral osteoarthritis

Diabetes or thyroid disorders8,9

Adhesive capsulitis

History of trauma10

If younger than 40 years: shoulder dislocation/subluxation

If older than 40 years: rotator cuff tears

Loss of range of motion

Adhesive capsulitis, glenohumeral osteoarthritis

Night pain10

Rotator cuff disorders, adhesive capsulitis

Numbness, tingling, pain radiating past elbow

Cervical etiology

Pain location

Anterior-superior shoulder pain associated with acromioclavicular joint pathology

Diffuse shoulder pain in deltoid region associated with rotator cuff disorders, adhesive capsulitis, or glenohumeral osteoarthritis

Pain with overhead activity10

Rotator cuff disorders

Sports participation11

Shoulder instability associated with overhead sports (e.g., baseball, softball, tennis), and collision sports (e.g., football, hockey)

Acromioclavicular joint pathology associated with weight lifting


Rotator cuff disorders, glenohumeral osteoarthritis

Information from references 5 through 11.

The occupational and recreational interests of the patient are also important in the evaluation of shoulder pain. A history of collision sports or weight lifting might make instability or acromioclavicular osteoarthritis more likely, whereas overhead sports or work activities might make rotator cuff pathology more likely.

The location of the pain can be helpful for diagnosis. Anterior-superior pain often can be localized to the acromioclavicular joint, whereas lateral deltoid pain is often correlated with rotator cuff pathology. Neck pain and radiating symptoms should be explored because cervical pathology can mimic shoulder pain. Typically, pain that radiates past the elbow to the hand is not related to shoulder pathology. However, it is not uncommon to have pain that radiates into the neck because the trapezius muscle often spasms in patients with underlying chronic shoulder pathology. The presence of both is more likely to be related to cervical pathology. Dull, achy night pain is often associated with rotator cuff tears or severe glenohumeral osteoarthritis.

Previous treatments and factors that aggravate or alleviate the pain can be important clues to the diagnosis. Night pain from sleeping on the affected shoulder, as well as a history of trauma, has been associated with rotator cuff tears.10 A painful arc, noted by pain with overhead activity, is associated with mild rotator cuff disease and tendinopathy as well as rotator cuff tears.10,15 A history of previous shoulder surgery is important because adhesive capsulitis and glenohumeral osteoarthritis can be early or late complications of surgery.

The patient's medical history, including joint problems, can help to narrow the differential diagnosis. Autoimmune diseases and inflammatory arthritis can affect the shoulder, resulting in erosions and wear in the glenohumeral joint, whereas diabetes and thyroid disorders can be associated with adhesive capsulitis.8,9


Table 2 10,1519 summarizes some of the shoulder maneuver tests and the associated conditions. The preferred order of the examination is: inspection, palpation, range of motion and strength tests, and provocative tests.

Table 2
Selected Tests of the Shoulder
Examination maneuver Associated condition Sensitivity (%) Specificity (%) LR+ LR−


Supraspinatus or infraspinatus atrophy10

Chronic rotator cuff tear






Acromioclavicular tenderness16

Acromioclavicular joint OA or chronic sprain





Range of motion

Restrictive active10

Rotator cuff disorder





Provocative tests

Hawkins' impingement15

Impingement/rotator cuff disorder






Large rotator cuff tear





Empty-can supraspinatus15

Rotator cuff disorder involving supraspinatus





Lift-off subscapularis17

Rotator cuff disorder involving subscapularis



> 25


External rotation/infraspinatus strength15

Rotator cuff disorder involving infraspinatus





Cross-body adduction18

Acromioclavicular joint OA or chronic sprain






Glenohumeral instability






Glenohumeral instability





LR+ = positive likelihood ratio; LR- = negative likelihood ratio; OA = osteoarthritis.

note: The recommended progression of shoulder examination maneuvers is inspection, palpation, range of motion and strength tests, and provocative tests.

Information from references 10 and 15 through 19.

Inspection should involve the entire shoulder, with proper exposure of the anterior, lateral, and posterior shoulder. A scar can indicate previous surgery or trauma. The presence of deformity, particularly of the acromioclavicular joint, often indicates an old trauma. Atrophy of the supraspinatus, and less commonly the infraspinatus, may be present with a chronic rotator cuff tear.

Palpation can identify areas of pathology, especially with the acromioclavicular joint. Isolated tenderness that is localized to the acromioclavicular joint is often indicative of acromioclavicular osteoarthritis. Subacromial tenderness may suggest rotator cuff pathology. Multiple trigger points around the shoulder may indicate non-shoulder pathology such as fibromyalgia. It is important to palpate both shoulders because certain structures can be painful (e.g., coracoid process, long head of biceps tendon), even in a healthy shoulder. The presence of a disproportionate amount of discomfort is helpful for diagnosis.

Range of motion should be evaluated in flexion, abduction, internal rotation, and external rotation. If the patient has a full active range of motion, a passive range of motion need not be assessed. Loss of active and passive ranges of motion is the hallmark of adhesive capsulitis, but it also can be found with moderate to severe osteoarthritis of the glenohumeral joint. Loss of an active range of motion, with a relatively preserved passive range of motion, is often present in patients with rotator cuff pathology. Pain with an active range of motion between 60 and 100 degrees of abduction is known as the “painful arc” and is associated with rotator cuff disease.20

There are numerous provocative tests for the shoulder. Although knowledge of all the tests can be helpful to diagnose pathology, the primary care physician should be familiar with a standard set of tests that should be performed on every shoulder. The Hawkins' test is used to determine impingement (Figures 1a and 1b). Tests for rotator cuff pathology are the drop-arm rotator cuff test (Figures 2a and 2b); the empty-can supraspinatus test (Figure 3); the lift-off subscapularis test (Figure 4); and the external rotation test (Figure 5). The cross-body adduction test (Figure 6) is used to determine symptomatic acromioclavicular joint osteoarthritis, and the apprehension and relocation tests (Figure 7) are used to determine shoulder instability.

Figures 1a and 1b.

Hawkins' Impingement Test. Forward flex the arm to 90 degrees with the elbow bent to 90 degrees. The arm is then internally rotated. A positive test, noted by pain on internal rotation, may signify subacromial impingement including rotator cuff tendinopathy or tear.

Figures 2a and 2b.

Drop-Arm Rotator Cuff Test. The arm is passively raised to 160 degrees. The patient is then asked to slowly lower the arm to the side. A positive test, noted by an inability to control the lowering phase and a dropping or giving way of the arm, may indicate a large rotator cuff tear.


Clinical decision rules have been developed to determine if a patient has a rotator cuff tear.21 A prospective analysis of 400 patients found that the triad of weakness found with the empty-can supraspinatus and external rotation tests, along with a positive impingement test (e.g., Hawkins' impingement test), had a 98 percent probability of being a rotator cuff tear (partial or complete).5 Patients older than 60 years who had two out of three findings also had a 98 percent probability of a rotator cuff tear. A retrospective analysis of 191 persons found that the combination of being older than 65 years, having weakness on external rotation testing, and experiencing night pain resulted in a 91 percent probability of having a rotator cuff tear (partial or complete).10 However, 54 percent of asymptomatic persons older than 60 years have been shown to have a partial or full thickness rotator cuff tear by magnetic resonance imaging (MRI).22

Diagnostic Imaging


Radiographs are indicated as part of the initial work-up for all chronic shoulder pain. The standard series includes anteroposterior, scapular Y, and axillary views. Plain radiographs are the tests of choice to assess osteoarthritis of the acromioclavicular and glenohumeral joints. Secondary signs of a large rotator cuff tear may be observed with superior migration of the humeral head. Cystic changes of the humeral head and sclerosis of the inferior acromion can indicate chronic rotator cuff disease. Plain radiographs can also diagnose calcific tendinitis. A large Hill-Sachs lesion (an indentation into the posterior aspect of the humeral head that occurs when the shoulder dislocates anteriorly and the back of the humeral head contacts the anterior edge of the glenoid) or an avulsion fracture off the inferior glenoid may indicate previous instability.

Figure 3.

Empty-Can Supraspinatus Test. The arms are abducted to 90 degrees and forward flexed 30 degrees. With the thumbs turned downward, the patient actively resists a downward force applied by the examiner. A positive test is indicated by weakness compared with the contralateral side and may indicate rotator cuff pathology, including supraspinatus tendinopathy or tear.

Figure 4.

Lift-Off Subscapularis Test. With the arm internally rotated behind the patient's lower back, the patient internally rotates against the examiner's hand. A positive test is indicated by the inability to lift the hand off of the back and may indicate subscapularis tendinopathy or tear.

Figure 5.

External Rotation/Infraspinatus Strength Test. The patient's arms are held at their sides with the elbows flexed to 90 degrees. The patient actively externally rotates against resistance. A positive test is indicated by weakness compared with the contralateral side and may be associated with infraspinatus or teres minor tendinopathy or tear.

Figure 6.

Cross-Body Adduction Test. The arm is passively adducted across the patient's body toward the contralateral shoulder. Pain may indicate acromioclavicular joint pathology, including chronic sprain or osteoarthritis.


Further testing of chronic shoulder pain should be utilized when the diagnosis remains unclear or the outcome would change management. Imaging options include MRI, arthrography, computed tomography (CT), and ultrasonography. The preferred test for diagnosing rotator cuff disorders is MRI, which can assess rotator cuff tendinopathy, partial tears, and complete tears.23 MRI arthrography has become the preferred test for the imaging of suspected labral pathology that may be found in chronic shoulder instability.24

Figure 7.

Apprehension and Relocation Tests. With the patient supine, the patient's arm is abducted to 90 degrees and the elbow is flexed to 90 degrees. Pain and a sense of instability with further external rotation may indicate shoulder instability. Relief of these symptoms with a posteriorly directed force on the proximal humerus is a positive relocation test and further supports diagnosis of shoulder instability.

Ultrasonography is emerging as a cost-effective alternative to MRI, with advantages over MRI23  that include better patient tolerance, dynamic assessment, and improved resolution in the face of previous surgery. Ultrasonography is technician-dependent and, therefore, has not yet gained widespread acceptance. Table 323 summarizes the sensitivity, specificity, and positive and negative likelihood ratios for MRI and ultrasonography in the diagnosis of rotator cuff tears.

Table 3
Imaging Tests for Rotator Cuff Tears
Imaging test Finding Sensitivity (%) Specificity (%) LR+ LR−


Any rotator cuff tear





Partial thickness rotator cuff tear





Full thickness rotator cuff tear






Any rotator cuff tear





Partial thickness rotator cuff tear





Full thickness rotator cuff tear





LR+ = positive likelihood ratio; LR- = negative likelihood ratio; MRI = magnetic resonance imaging.

Information from reference 23.

The CT scan is the preferred imaging study for bony disorders of the shoulder, including arthritis with significant erosion; instability with significant bone loss of the humeral head or the glenoid; tumors; and occult fractures. CT arthrography may play a role for patients with suspected rotator cuff tears who cannot undergo an MRI.

Diagnostic Approach

Applying the findings from the patient's history, physical examination, and radiographs should enable the physician to formulate a diagnosis (Table 4). Potential problem diagnoses include patients with more than one underlying problem (such as a rotator cuff tear and symptomatic acromioclavicular osteoarthritis) or a less common cause of the pain. The typical presentations for the most common causes of chronic shoulder pain are discussed below.

Table 4
Diagnosing Causes of Chronic Shoulder Pain
Diagnosis Findings consistent with diagnosis Findings inconsistent with diagnosis Imaging

Acromioclavicular joint osteoarthritis

Pain at acromioclavicular joint; positive cross-body adduction test; may have history of trauma

No pain with palpation at acromioclavicular joint; negative cross-body adduction

Radiography shows osteoarthritis at acromioclavicular joint, some evidence of acromioclavicular separation

Adhesive capsulitis

Age older than 40 years; decreased active and passive range of motion; history of diabetes or thyroid disease

Full passive range of motion; no pain with movements

Radiography usually normal

Glenohumeral instability

Age usually younger than 40 years; history of subluxation or dislocation, or generalized ligamentous laxity; positive apprehension test

Negative apprehension test

Radiography usually normal

Glenohumeral osteoarthritis

Age older than 50 years; progressive pain; crepitus with range of motion

Age younger than 50 years; normal radiography

Radiography shows narrowing of joint space, spurring, and osteophytes

Rotator cuff pathology

Age usually older than 40 years; pain with overhead activity; night pain; weakness; positive Hawkins' impingement test; and rotator cuff weakness

No pain with overhead activities; no arm pain; no weakness with lift-off, external rotation, or empty-can tests

Radiography may show humeral head sclerosis or cyst, loss of acromial-humeral interval; acromial spur


Acromioclavicular joint pathology is usually well localized. A history of an injury to the joint (shoulder separation), heavy weight lifting, tenderness to palpation at the acromioclavicular joint, pain with cross-body adduction testing, extreme internal rotation, and forward flexion are consistent with the diagnosis.3,4,14 Radiographs may be difficult to interpret because most patients have acromioclavicular osteoarthritis by the age of 40 to 50 years.3,4,14 A distal clavicle lysis or an elevated distal clavicle supports the diagnosis, whereas the absence of tenderness to palpation at the acromioclavicular joint is inconsistent with the diagnosis.3,4,14


Adhesive capsulitis refers to a painful shoulder in which the active and passive ranges of motion are severely limited. Gradual onset of pain and stiffness, loss of motion in all planes with increased pain at the extremes of motion, and a history of diabetes or thyroid disease are consistent with the diagnosis.3,4,14 Radiographs are typically negative, and osteoarthritis on radiography is inconsistent with the diagnosis. A normal range of motion is antithetic to the diagnosis.3,4,14


Glenohumeral instability refers to disorders affecting the capsulolabral complex, including dislocation and subluxation. The patients are usually younger than 40 years and have a history of dislocation or subluxation events, which is often involved with collision or overhead sports.3 A “dead arm,” numbness over the lateral deltoid, and a positive apprehension test are consistent with the diagnosis.20 Examination findings inconsistent with the diagnosis are no history of dislocation or subluxation and a negative apprehension test. Positive radiographs are helpful for diagnosing Hill-Sachs lesion, dislocation, and inferior glenoid avulsion fracture, but are nondiagnostic if negative.


Glenohumeral osteoarthritis usually presents as gradual pain and loss of motion in patients older than 50 years.3,4,14 A history of arthritis, previous shoulder surgery, pain, crepitus, and decreased motion is consistent with the diagnosis.3,4,14 Radiographs are diagnostic. Normal radiographs and a normal range of motion are inconsistent with the diagnosis.


Rotator cuff disorders that affect the function of the rotator cuff include a partial or complete tear, tendinitis or tendinosis, and calcific tendinitis. Initially, it is more important to differentiate this group of disorders from the other groups than it is to identify the specific diagnosis. Typically, the patients are older than 40 years and complain of pain in the lateral aspect of the arm with radiation no farther than the elbow. Weakness, a painful arc of motion, night pain, and a positive impingement sign are components of the history and physical examination that are consistent with this diagnosis.14 Findings that are inconsistent with this diagnosis include being younger than 30 years, having no weakness, and presenting no impingement signs. Positive radiographs can be helpful to diagnose calcific tendinitis, acromial spur, humeral head cysts, or superior migration of the humeral head, but are typically normal.3,4,14


Numerous other problems that can affect the shoulder are somewhat less common, such as biceps and labral pathology (e.g., SLAP tear—superior labrum anterior to posterior tear—an avulsion injury to the root of the long head of the biceps tendon) and multidirectional instability. Other conditions are extremely uncommon, such as a suprascapular nerve injury, Parsonage Turner syndrome (brachial plexus neuritis), and a neuropathic shoulder from syringomyelia. The shoulder can also be the area of perceived pain for many non-shoulder problems, including fibromyalgia, cervical radiculopathy, and thoracic outlet syndrome. Fibromyalgia is notable for classic areas of tender points. Cervical radiculopathy pain is generally posterior, with radiation to the neck and down the arm below the elbow. Thoracic outlet syndrome, like cervical radiculopathy, is notable for symptoms that extend past the elbow and often into the hand. There can be neurologic or vascular symptoms based on the subtype. Positive radiographs are helpful for diagnosing severe cervical osteoarthritis, but are typically negative. Positive provocative shoulder testing (e.g., Hawkins' impingement test, empty-can test, external rotation test) that disappears after a subacromial lidocaine (Xylocaine) injection is inconsistent with the diagnosis of fibromyalgia, cervical radiculopathy, or thoracic outlet syndrome.3,4,14

The Authors

KELTON M. BURBANK, MD, is an orthopedic surgeon in private practice in Leominster, Mass. He completed fellowships in sports medicine at the New England Baptist Hospital, Boston, Mass., and the Lahey Clinic, Burlington, Mass. Dr. Burbank received his medical degree and completed a residency in orthopedics at the University of Massachusetts, Worcester, and a residency in family practice at the University of Vermont in Burlington.

J. HERBERT STEVENSON, MD, serves as director of sports medicine and director of the sports medicine fellowship for the University of Massachusetts Department of Family Medicine in Fitchburg. Dr. Stevenson received his medical degree from the University of Vermont Medical School, Burlington. He completed a fellowship in sports medicine at the University of Connecticut in Hartford, and a residency in family medicine at the University of Massachusetts.

GREGORY R. CZARNECKI, DO, is an assistant professor of internal medicine at the University of Connecticut in Hartford. He serves as assistant director in the Department of Medicine at Hartford (Conn.) Hospital. Dr. Czarnecki received his medical degree from New England College of Osteopathic Medicine, Biddeford, Maine. He completed a residency in internal medicine at the University of Connecticut in Farmington and a fellowship in sports medicine at the University of Massachusetts Department of Family Medicine in Fitchburg.

JUSTIN DORFMAN, DO, is a sports medicine physician in private practice in Southboro, Mass. Dr. Dorfman received his medical degree from Lake Erie College of Osteopathic Medicine, Erie, Pa. He completed a residency in family medicine at Christiana Care Hospital in Newark, Del., and a fellowship in sports medicine in the Department of Family Medicine at the University of Massachusetts in Fitchburg.

Address correspondence to Kelton M. Burbank, MD, Longview Orthopaedic Center, HealthAlliance Hospital – Leominster Campus, Professional Office Building, 100 Hospital Rd., Suite 3C, Leominster, MA 01453 (e-mail: kmbortho1@aol.com).

Author disclosure: Nothing to disclose.


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