Biceps Tendinopathy: Causes, Symptoms, and How We Can Help

All information in this blog is supported by peer-reviewed research. Reference numbers appear throughout, with the full list at the bottom of the page.

What Is Biceps Tendinopathy?

Biceps tendinopathy refers to pain and dysfunction affecting the long head of the biceps tendon, the part of the biceps muscle that runs up through the front of the shoulder and attaches deep inside the joint. It's a common cause of anterior shoulder pain, often felt as a deep ache at the front of the shoulder that can spread down toward the biceps muscle itself.

What makes biceps pain genuinely tricky to diagnose is that it rarely exists in complete isolation. Current clinical practice guidance now classifies long head of biceps tendinopathy as falling under the broader umbrella term rotator cuff-related shoulder pain, alongside subacromial pain syndrome and subacromial impingement syndrome. ¹ It can also coexist with, or be mistaken for, a SLAP lesion or calcific tendinopathy. Understanding the differences between these is genuinely important, because the right treatment approach depends on getting the diagnosis right.

Risk Factors

• Age: tendon degeneration is strongly age-related, with significant changes rarely seen before 60 ¹⁴ ¹⁵

• Repetitive overhead activity: common in sports such as baseball, swimming, volleyball, and gymnastics ¹⁶ ¹⁷

• Manual or physically demanding occupations: repeated shoulder loading increases tendon strain

• Coexisting rotator cuff disease: present in up to 90% of rotator cuff tear cases alongside biceps tendinopathy ¹⁸

• Structural factors: bony spurs in the bicipital groove, SLAP tears, subscapularis tears, or a narrowed coracohumeral space ¹⁹

• Poor shoulder mechanics in overhead athletes: including scapular dyskinesia, reduced internal rotation, and poor trunk control ²⁰

Biceps Tendinopathy vs Calcific Tendinopathy vs SLAP Lesion: Telling Them Apart

Biceps tendinopathy (tendinitis/tendinosis): This is essentially an overuse or degenerative condition of the tendon itself, caused by repetitive loading, age-related wear, or irritation as the tendon glides through the bicipital groove at the front of the shoulder. Pain is typically reproduced with shoulder flexion against resistance while the elbow is kept straight (Speed's test), and with resisted forearm rotation (Yergason's test). ² However, these tests are sensitive but not highly specific to biceps pathology alone, as they can also be positive in other shoulder conditions, including SLAP lesions. ³

Calcific tendinopathy: This occurs when calcium deposits build up within a tendon, most commonly within the rotator cuff but occasionally within the biceps tendon itself. The term is specifically used when a calcific deposit is confirmed on imaging. ¹ Calcific tendinopathy can present very differently depending on its phase, it may cause a chronic, dull ache during the slow formative phase, or sudden, severe, intense pain during the resorptive phase, when the body actively breaks the calcium deposit down. This sudden severe presentation can sometimes be mistaken for a more serious shoulder injury.

SLAP lesion (Superior Labrum Anterior to Posterior tear): A SLAP lesion is a tear of the labrum, the ring of cartilage lining the shoulder socket, specifically at the point where the long head of the biceps tendon attaches. Because the biceps tendon anchors directly into this part of the labrum, biceps pathology and SLAP lesions are anatomically and clinically intertwined. If one of the key clinical tests for biceps and SLAP pathology is positive, sensitivity is around 75%, but if all three are positive together, specificity rises to around 90%, reflecting how much overlap exists between the two conditions on clinical examination. ⁴ Research has also found a direct anatomical relationship between the two, with labral attachment variation correlating with the presence of biceps tendon lesions in patients with rotator cuff tears. ⁵ A SLAP lesion has even been documented in direct association with calcific tendinitis of the biceps tendon at its origin, showing all three conditions can genuinely overlap in the same shoulder. ⁶

A simple way to think about it:

Feature	Biceps Tendinopathy	Calcific Tendinopathy	SLAP Lesion
Underlying problem	Tendon overuse/degeneration	Calcium deposit within tendon	Labral tear at biceps attachment
Typical onset	Gradual	Can be gradual, or sudden and severe in resorptive phase	Often follows a specific injury, overhead or pulling motion
Confirmed by	Clinical tests, ultrasound	Imaging (X-ray or ultrasound showing deposit)	MRI, often confirmed only at arthroscopy
Clinical tests	Speed's, Yergason's	Same tests can be positive if biceps involved	Speed's, Yergason's, biceps load test, but not specific alone

Rotator Cuff-Related Pain Syndrome: Why Biceps Pain Rarely Stands Alone

This is genuinely one of the most important shifts in how shoulder pain is now understood and assessed. A January 2025 clinical practice guideline notes that rotator cuff disorders account for more than half of all shoulder conditions, and the rotator cuff comprises the supraspinatus, infraspinatus, subscapularis, and teres minor. ¹ Crucially, this guideline groups subacromial pain syndrome, subacromial impingement syndrome, and long head of biceps tendinopathy all together under the single diagnostic umbrella of rotator cuff tendinopathy, rather than treating them as entirely separate conditions. ¹

Why does this matter to you? Because in clinical practice, biceps pain is frequently part of a wider pattern of shoulder dysfunction rather than an isolated tendon problem. A patient with rotator cuff tendinopathy will often report referred pain into surrounding areas, and special tests for the rotator cuff and biceps frequently overlap. ⁷ This is why a thorough assessment looking at the whole shoulder, not just the biceps tendon in isolation, gives the most accurate picture and the most effective treatment plan.

Common Signs and Symptoms

• A deep, aching pain at the front of the shoulder, sometimes spreading down the front of the upper arm

• Pain reproduced by lifting the arm forward against resistance, or twisting the forearm

• Tenderness when pressing directly over the bicipital groove at the front of the shoulder

• Pain worse with overhead activity, lifting, or carrying

• A clicking, catching, or popping sensation (more suggestive of a SLAP lesion)

• Sudden, severe pain with significant restriction (more suggestive of an acute calcific episode)

• Pain that may coexist with broader rotator cuff symptoms, such as weakness or pain with overhead reaching

What to Look Out For

• A visible deformity in the upper arm, such as a "Popeye" bulge, which can indicate a biceps tendon rupture

• Sudden, significant weakness or inability to move the shoulder

• Shoulder pain following significant trauma

• Signs of infection, such as fever, redness, or hot swelling

• Pain that is constant, severe, and unrelated to movement

How We Can Help

Current clinical practice guidance places strong emphasis on conservative, active, exercise-based care for rotator cuff-related conditions including biceps tendinopathy, with surgery considered only when conservative treatment has been given a proper chance. ⁸ A diagnosis of tendinopathy should be understood as a load tolerance issue, where the tendon needs progressive, graded loading to rebuild capacity, not simply a structure that needs "fixing" through rest alone. ⁸

Osteopathic manual techniques and manual therapy: Manual therapy may complement exercise for short-term pain relief, though it should not replace active rehabilitation. ⁸ We use hands-on treatment to address restriction in the shoulder, neck, and thoracic spine that frequently contributes to altered shoulder mechanics and ongoing tendon irritation.

Deep tissue and sports massage: Targeted soft tissue work around the biceps, rotator cuff, and surrounding shoulder girdle muscles helps reduce compensatory tension and supports the overall rehabilitation programme.

Medical acupuncture: Research comparing acupuncture with other treatment modalities for rotator cuff conditions found genuine supporting evidence for its use as part of a broader treatment plan. ⁹ We use acupuncture alongside exercise and manual therapy, not as a standalone treatment.

Cupping and gua sha: Effective complementary tools for releasing tension in the surrounding shoulder and upper back muscles that frequently develops as the body compensates for an irritated biceps tendon.

Exercise and Rehabilitation

Exercise is the cornerstone of recovery, and current evidence gives some clear, useful guidance on what works.

• Progressive loading is essential. Research consistently supports exercise therapy as effective for improving pain and function in rotator cuff-related shoulder pain, including biceps tendinopathy. ¹⁰

• Eccentric exercise, where the muscle lengthens under load, such as slowly lowering a weight, has shown meaningful pain reduction in the medium term compared to general exercise programmes, though the advantage over well-structured general exercise is not always significant in the short term. ¹¹

• Motor control and scapular-focused exercise, retraining how the shoulder blade and surrounding muscles work together, has also shown good evidence for reducing pain and disability, particularly over the medium term. ¹¹

• There is no single "best" exercise type. Current research is clear that specific exercise approaches such as eccentric loading do not show a significant overall advantage over well-prescribed general or conventional exercise therapy, what matters most is a structured, progressive, individually tailored programme. ¹⁰

• Working within tolerable pain levels is appropriate. Modern tendinopathy rehabilitation generally allows some discomfort during exercise rather than requiring complete pain avoidance, as gradual loading is what builds the tendon's capacity over time.

Your practitioner will guide you through a progressive programme tailored to whether biceps tendinopathy, calcific involvement, or a labral component appears to be the dominant feature of your presentation.

What to Expect at Your First Appointment

We will take a thorough history and carry out a hands-on shoulder assessment, including specific tests for the biceps tendon and surrounding rotator cuff structures, to build an accurate picture of what's driving your symptoms. Initial diagnosis should be rooted in thorough clinical assessment rather than routine imaging, as most shoulder pain can be accurately identified through structured examination. ⁸ We will explain clearly what we find and build a progressive, evidence-based treatment plan with you.

Frequently Asked Questions

Do I need an MRI scan?Not usually in the first instance. A thorough clinical assessment is generally sufficient, with imaging reserved for cases that aren't responding as expected, or where a SLAP lesion or calcific deposit needs to be confirmed.

Could this actually be a SLAP lesion? It's possible, given how closely the two conditions overlap clinically. A diagnosis should not rely on clinical tests alone, since SLAP lesions can mimic other issues like impingement or rotator cuff problems. ¹² We will assess thoroughly and refer for further imaging if your presentation suggests this is more likely. nih

Will I need surgery? Most people do not. For the vast majority of SLAP injuries, initial management is non-operative, with many smaller tears being commonly asymptomatic and not requiring treatment at all. ¹³ Conservative, exercise-based treatment remains the recommended first-line approach for biceps tendinopathy and most rotator cuff-related shoulder pain. ⁸

How long will recovery take? This varies depending on which structures are involved and how long symptoms have been present, but most tendinopathy-related shoulder pain shows meaningful improvement over a course of progressive exercise lasting several weeks to a few months, with consistency being more important than any single treatment type.

Think this sounds like what's going on with your shoulder? Get in touch using the contact form and we will carry out a thorough assessment to find out exactly what's happening and the right way to treat it.

BOOK YOUR APPOINTMENT HERE

References

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2. Bicipital Tendonitis Clinical Presentation. Medscape. Available at: https://emedicine.medscape.com/article/96521-clinical

3. Holtby R, Razmjou H. Accuracy of the Speed's and Yergason's tests in detecting biceps pathology and SLAP lesions. Referenced in: Bicipital Tendonitis Differential Diagnoses, Medscape. Available at: https://emedicine.medscape.com/article/96521-differential

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5. Lu Y, Li Y, Zhang H, Li X, Li F, Jiang C. The correlation between variation of labral attachment and lesions of the Long head of the biceps tendon in patients with rotator cuff tears. Orthopaedic Surgery. 2023;15(8):1967-74.

6. Kim KC, Rhee KJ, Shin HD, Kim YM. A SLAP lesion associated with calcific tendinitis of the long head of the biceps brachii at its origin. Knee Surgery, Sports Traumatology, Arthroscopy. 2007;15(12):1478-81.

7. A Simplified Approach to Evaluate and Manage Shoulder Pain. Journal of the American Board of Family Medicine. 2025. Available at: https://www.jabfm.org/content/jabfp/37/6/1156.full.pdf

8. Optimize shoulder rotator cuff recovery with these new 2025 clinical guidelines. KRU Physical Therapy and Performance Lab, summarising Desmeules et al. 2025. Available at: https://www.kruperformance.com/blog/rotator-cuff-tendinopathy-what-new-2025-guidelines-mean-for-clinicians-and-patients

9. Efficacy comparison between acupuncture and other modalities in the treatment of rotator cuff diseases: meta-analysis of randomized controlled trials. American Journal of Translational Research. 2024;16(2).

10. Wu D, Wen Z, Ke H, et al. Specific modes of exercise to improve rotator cuff-related shoulder pain: systematic review and meta-analysis. Frontiers in Bioengineering and Biotechnology. 2025;13:1560597. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC12011739/

11. Lafrance S, et al. The Efficacy of Exercise Therapy for Rotator Cuff-Related Shoulder Pain According to the FITT Principle. Journal of Orthopaedic & Sports Physical Therapy. 2024;54(8):499-512. Available at: https://www.jospt.org/doi/10.2519/jospt.2024.12453

12. SLAP and Biceps Pathology, patient education. Available at: https://www.cqupperlimb.com/education/shoulder/slap-biceps-pathology/

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14. Canavan K, Zai Q, Bruni D, Alexander J, Oude Nijhuis KD, Ring D. Long Head of Biceps Tendinopathy Is Associated With Age and Cuff Tendinopathy on MRI Obtained for Evaluation of Shoulder Pain. Clinical Orthopaedics and Related Research. 2025;483(5):869-877. Available at: https://pubmed.ncbi.nlm.nih.gov/39679662/

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19. Association of high sensitivity C-reactive protein with tearing of the long head of the biceps tendon. PMC. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6839062/

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