Yergason’s test is a hands-on clinical maneuver used by physicians, physical therapists, and athletic trainers to check for problems with the long head of the biceps tendon in your shoulder. The test is quick and painless to perform when the tendon is healthy, but it produces pain in the front of the shoulder when something is wrong. Its real diagnostic value, though, is more nuanced than textbooks often suggest: the test is fairly good at confirming that a problem exists when it triggers pain, but it misses a substantial number of people who actually have biceps or labral pathology. Understanding what Yergason’s test can and cannot tell you matters if you are the person sitting on the exam table.
How the Test Is Performed
You stand or sit with your elbow bent to about 90 degrees and your forearm rotated so that your palm faces downward. The examiner holds your wrist or hand and asks you to twist your forearm outward (supinate it) against their resistance, as if you were trying to turn your palm face-up while they prevent you from doing so. The examiner may also apply a slight downward pull on the elbow to add traction through the biceps tendon. A positive result is pain felt specifically in the bicipital groove, the bony channel at the front of the shoulder where the long head of the biceps tendon runs.1Journal of the Pediatric Orthopaedic Society of North America. Current Concept Review Physical Exam for Athletic Shoulder Injuries in Adolescent Patients
The logic behind the maneuver is straightforward. Resisted supination loads the biceps muscle, and the force transmits up through the long head tendon where it attaches inside the shoulder joint. If the tendon is inflamed, partially torn, or slipping out of its groove, that mechanical load provokes pain right at the site of trouble. The test essentially asks the biceps tendon to work under stress and sees whether it complains.
What Problems It Is Meant to Detect
Yergason’s test was originally developed to identify issues with the long head of the biceps tendon, and it remains most commonly associated with two conditions. The first is biceps tendinitis or tendinosis, where the tendon running through the bicipital groove becomes irritated, thickened, or degenerative. The second is subluxation of the tendon, where the long head slips in and out of its groove due to damage to the structures that normally hold it in place.
Over the decades, clinicians also began using the test as one piece of a larger puzzle when evaluating superior labral tears, commonly known as SLAP lesions. These are injuries to the ring of cartilage at the top of the shoulder socket where the biceps tendon anchors. Because the biceps tendon connects directly to this labral tissue, loading the tendon can sometimes reproduce pain caused by a labral tear. However, as the research shows, Yergason’s test is considerably better at identifying biceps tendon problems than it is at diagnosing labral injuries on its own.
Accuracy for Biceps Tendon Problems
The numbers clinicians care most about for any diagnostic test are sensitivity (how often it catches a real problem) and specificity (how often a negative result correctly rules one out). For Yergason’s test, those numbers have been studied against both surgical findings and ultrasound imaging, and the pattern is consistent: specificity is the test’s strength, while sensitivity is its weakness.
In one study comparing clinical test results to what surgeons actually found during arthroscopy, Yergason’s test had a sensitivity of about 43% and a specificity of roughly 79% for biceps pathology.2PubMed. Accuracy of the Speed’s and Yergason’s tests in detecting biceps pathology and SLAP lesions: comparison with arthroscopic findings In plain terms, the test caught the problem less than half the time, but when it was negative, there was a decent chance the tendon was actually fine. A study using musculoskeletal ultrasound as the reference standard found even lower sensitivity at 32%, with similar specificity around 78%.3PubMed. A comparison of physical examinations with musculoskeletal ultrasound in the diagnosis of biceps long head tendinitis
Another investigation that looked specifically at partial biceps tendon tears found sensitivity at 50% with specificity climbing to about 90%. For biceps tendinosis rather than a frank tear, sensitivity was poor again, but specificity stayed above 90%.4Medical Journal of Dr. D.Y. Patil Vidyapeeth. A Study to Find the Correlation Between Clinical and Ultrasonographic Findings in Patients Presented with Painful Shoulder Conditions A surgical population study found that across a battery of biceps-directed tests, Yergason’s was the most specific of the group and carried the highest positive likelihood ratio, meaning a positive Yergason’s result shifts the probability of a real problem more than the other tests do.5Journal of Shoulder and Elbow Surgery. Diagnostic accuracy of clinical tests directed to the long head of biceps tendon in a surgical population
The takeaway across these studies is remarkably consistent. A positive Yergason’s test is a meaningful signal that something is likely wrong with the biceps tendon. A negative result, however, does not let you off the hook. The test misses too many genuine problems to be used as a standalone screen.
How It Compares to Speed’s Test
Speed’s test is the other clinical exam most frequently mentioned alongside Yergason’s test for biceps pathology. In Speed’s test, you hold your arm out in front of you with the elbow straight and palm up, and the examiner pushes your arm downward while you resist. Pain in the front of the shoulder is considered positive.
The two tests load the biceps tendon in different ways, but their diagnostic profiles turn out to be complementary rather than duplicative. In the arthroscopy-verified study mentioned above, Speed’s test had lower sensitivity (about 32%) and slightly lower specificity (75%) compared to Yergason’s 43% and 79%.6PubMed. Accuracy of the Speed’s and Yergason’s tests in detecting biceps pathology and SLAP lesions: comparison with arthroscopic findings The likelihood ratios tell the same story: Yergason’s produced a positive likelihood ratio of about 2.05, meaning a positive result roughly doubles the odds that biceps pathology is present, while Speed’s positive likelihood ratio was only 1.28, barely shifting the probability at all.
Neither test is powerful enough to diagnose a biceps tendon problem on its own. But because Yergason’s is somewhat better at ruling in a problem (higher specificity and positive likelihood ratio) while other tests may catch a broader net of patients, most clinicians perform both as part of a shoulder exam rather than choosing one or the other.
Accuracy for SLAP Lesions
When the question shifts from biceps tendinitis to a labral tear at the top of the shoulder socket, Yergason’s test plays a different role. It is not one of the more sensitive tests for SLAP lesions, meaning it will not catch most of them. But it is one of the more specific ones, meaning a positive result is less likely to be a false alarm.
A study evaluating a wide range of clinical exams against confirmed type II SLAP lesions found that the most sensitive tests for these injuries were the active compression test (O’Brien’s), the Hawkins test, and the Neer test, among others. Yergason’s was not among the sensitive group. However, its specificity was relatively high, putting it alongside the biceps load II test as a useful confirmatory tool.7PubMed. An evaluation of the provocative tests for superior labral anterior posterior lesions
This distinction matters in practice. A separate study found that when two of the more sensitive tests were combined with one of the more specific tests like Yergason’s, the combined sensitivity and specificity reached roughly 70% and 95%, respectively.8PubMed. The evaluation of various physical examinations for the diagnosis of type II superior labrum anterior and posterior lesion That is a substantially better diagnostic picture than any single test achieves alone. The clinical strategy, then, is to cast a wide net with sensitive tests first and then use a specific test like Yergason’s to increase confidence in the diagnosis before ordering imaging or recommending surgery.
Why Clinicians Combine Multiple Tests
The shoulder is one of the most complex joints in the body, and multiple structures sit in close proximity. The rotator cuff tendons, the biceps tendon, the labrum, the bursa, and the joint capsule can all produce pain in overlapping areas. No single physical exam test reliably isolates one structure from the rest. This is not a failure of any individual test so much as a reality of shoulder anatomy: tugging on the biceps tendon also stresses the labrum where the tendon attaches, and compressing the shoulder also loads the rotator cuff. Pain generated by one maneuver could be coming from more than one injured structure.
The research consistently bears this out. In the arthroscopy comparison study, the authors noted that although Speed’s and Yergason’s tests are moderately specific, they do not produce a large enough shift in post-test probability to change the working diagnosis on their own.9PubMed. Accuracy of the Speed’s and Yergason’s tests in detecting biceps pathology and SLAP lesions: comparison with arthroscopic findings In other words, if your clinician already suspects a biceps problem based on your history and symptoms, a positive Yergason’s test increases that suspicion a bit, but not enough to skip imaging. If they did not suspect it, a single positive test probably will not launch a whole new diagnostic path either.
This is why a thorough shoulder exam typically involves a battery of five to ten provocative tests rather than relying on any one. Each test contributes a piece of the puzzle, and the pattern of which tests are positive and which are negative helps the clinician triangulate which structure is most likely the source of trouble.
The Description Problem
One issue that does not get enough attention is that Yergason’s test is not described the same way in every textbook, training manual, or clinical guide. Researchers who reviewed the published descriptions of the test found meaningful inconsistencies in the instructions for hand placement, the specific joint movements supposed to provoke symptoms, and what constitutes a positive result.10Semantic Scholar. Yergason’s Test: Discrepancies in Description and Implications for Diagnosing Biceps Subluxation Some sources describe the examiner stabilizing the elbow, while others show the examiner applying downward traction. Some describe asking the patient to supinate against resistance while also externally rotating the shoulder; others describe supination alone.
These are not trivial differences. If the test is performed slightly differently depending on which training program a clinician attended, the results are not truly comparable across examiners. The study authors went as far as recommending that, until consensus is reached on the correct technique, the test should be reconsidered in certification exams for athletic trainers. That recommendation has not been universally adopted, but it highlights a real issue with standardization that patients are unlikely to be aware of.
For you as a patient, the practical implication is simple: the value of any clinical shoulder test depends heavily on the skill and experience of the person performing it. The same test done by a fellowship-trained sports medicine physician and a newly certified clinician can produce different results, not because the test is inherently unreliable, but because the execution is not standardized to the degree you might expect.
Efforts to Improve Reproducibility
Researchers have tried to take the human variability out of shoulder provocative tests by using instrumented methods. One group used a dynamometer (a device that measures force precisely) during shoulder provocation tests while simultaneously recording the electrical activity of the muscles involved using surface electrodes. The idea was to standardize the amount of resistance applied and objectively measure which muscles fired during each test, removing the subjectivity of how hard the examiner pushes and what the patient reports feeling.11PubMed Central. Glenohumeral muscle activation during provocative tests designed to diagnose superior labrum anterior-posterior lesions The modifications improved test reproducibility.12ScholarWorks. Biomechanical Evaluation of Glenohumeral Joint Stabilizing Muscles During Provocative Tests Designed to Diagnose Superior Labrum Anterior-Posterior Lesions
This kind of instrumented testing is valuable for research and for understanding what the tests actually do to the shoulder biomechanically. But it is not practical in a typical clinical setting. You are not going to be hooked up to surface electrodes and a dynamometer during a routine office visit. The research does, however, support the idea that standardized force and positioning would improve the diagnostic value of tests like Yergason’s if protocols could be simplified enough for everyday use.
What a Positive Result Means for You
If your clinician performs Yergason’s test and it is positive, that result is one data point in a larger picture. It increases the likelihood that you have some form of biceps tendon pathology, whether that is tendinitis, a partial tear, or instability of the tendon in its groove. But given the test’s modest sensitivity, a single positive result is rarely sufficient to make a diagnosis or determine a treatment plan on its own.
In most cases, a positive Yergason’s test combined with a consistent history (for example, pain in the front of the shoulder that worsens with overhead activity or lifting) will lead to imaging. Ultrasound is increasingly common as a first-line imaging tool for biceps tendon problems because it is inexpensive, quick, and can visualize the tendon in motion. MRI remains the standard when labral tears or other intra-articular pathology needs to be evaluated. The clinical test, however, helps guide which imaging to order and where to focus the radiologist’s attention.
Conversely, a negative Yergason’s test does not rule out biceps or labral problems. If your symptoms and history are suggestive, your clinician should not dismiss the possibility based on a negative exam finding alone. The research on this is clear: the test’s sensitivity is simply not high enough to serve as a reliable screen.
Yergason’s Test in Younger Athletes
Shoulder exams in adolescents and young athletes present unique challenges. Growth plates are still open, the labrum is still maturing, and the differential diagnosis for shoulder pain includes conditions that do not appear in adults, such as proximal humeral epiphyseal injuries. Yergason’s test is still performed in this age group, and the technique is the same: elbow at 90 degrees, forearm pronated, resisted supination looking for pain in the bicipital groove.13Journal of the Pediatric Orthopaedic Society of North America. Current Concept Review Physical Exam for Athletic Shoulder Injuries in Adolescent Patients
The evidence base for clinical shoulder tests in pediatric populations is thinner than it is for adults, partly because surgical confirmation studies are less common in younger patients. Most of the sensitivity and specificity numbers cited in clinical practice come from adult surgical populations, and it is not clear how well those numbers translate to a 15-year-old throwing athlete. Clinicians working with young athletes tend to rely on clinical tests as part of a broad screening approach while maintaining a lower threshold for imaging, given the stakes of missing a growth plate or labral injury in a developing shoulder.
When the Tendon Has Already Ruptured
A question that sometimes comes up is what happens when you perform Yergason’s test on someone whose long head of biceps tendon has already ruptured completely. In that scenario, the test loses its diagnostic rationale. The tendon is no longer connected, so resisted supination does not transmit force through the bicipital groove. You might still be able to supinate the forearm because the short head of the biceps and other forearm muscles contribute to that movement, but the characteristic pain in the groove will be absent. A “Popeye deformity,” the visible bulge in the upper arm caused by the retracted biceps muscle belly, is typically a much more obvious sign of a complete rupture than anything a provocative test reveals.
Partial tears sit in a more ambiguous zone. The tendon is still intact enough to transmit some force, so Yergason’s test might or might not provoke pain depending on the extent and location of the tear. This is one reason the test’s sensitivity is as low as it is: partial tears represent a gray area where clinical tests are inherently less reliable, and imaging becomes particularly important for clarifying the diagnosis.
The Role of Palpation
Clinicians often combine Yergason’s test with direct palpation of the bicipital groove, pressing along the front of the shoulder to check for point tenderness over the tendon itself. Some studies have found that simple tenderness to palpation over the groove has comparable or even better sensitivity than the provocative tests, though its specificity tends to be lower because pressing on the front of a sore shoulder can hurt for many reasons unrelated to the biceps tendon.
The combination of a provocative test like Yergason’s (which loads the tendon mechanically) and direct palpation (which identifies the location of tenderness) gives the examiner two independent streams of information. When both are positive and localized to the same spot, the clinical picture becomes more convincing. When they disagree, it signals that more investigation is needed. Experienced clinicians blend these findings seamlessly during a shoulder exam, and patients may not even realize that separate tests are being performed.