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Atlas · Upper Arm

Biceps Brachii

Biceps brachii bends the elbow and turns the palm upward. Anterior shoulder pain may arise from its long-head tendon, while upper-arm soreness and acute elbow pain need different examinations. Compare the tendon, muscle belly and distal attachment before choosing local treatment.

Biceps Brachii
Body region
Upper Arm
Trigger points
3
documented in this muscle
Common symptoms
3
patterns cataloged
Contributors
3
Factors to assess

Muscle overview

Symptoms and first steps

Practical first steps

  • Temporarily reduce heavy palm-up carrying and curls that reproduce pain.
  • Keep the elbow close to the body and split heavy loads between hands.
  • Maintain comfortable elbow and shoulder motion while rebuilding load tolerance.

When to seek assessment

  • A pop with bruising, a new bulge or a gap near the elbow needs prompt assessment.
  • Marked weakness turning the palm upward, progressive numbness or traumatic loss of shoulder movement warrants examination.

The long-head tendon travels in the bicipital groove; the short head starts at the coracoid. A procedure for the groove or tendon sheath is different from treating a tender point in the muscle belly.

Examination, palpation and treatment evidence

Illustrated overview

Biceps Brachii

Blue highlights the muscle. Crosses mark representative trigger-point sites; shaded areas show possible referred pain. These examples do not correspond one-to-one with the numbered points below. Patterns vary and cannot diagnose the cause of pain.

Illustrated overview

Biceps Brachii · Anatomy and referred pain 1

Representative source regions. The illustrated markers and pain pattern are not individual assignments to the numbered trigger points.

Open full-size image

Trigger points

1. TrP1

Location. Front of upper arm

Trigger point map
Biceps Brachii — Trigger point mapOpen full-size image

Shared muscle diagram; it may show several trigger points.

Referred pain map
Biceps Brachii — Referred pain mapOpen full-size image

Shared muscle diagram; it may show several trigger points.

Pain referral. Front of shoulder, elbow

Pain Pattern

  • Anterior upper arm
  • Anterior shoulder
  • Front of elbow; assess the distal tendon separately

What This Pain Feels Like

Lifting, carrying or turning the palm upward can provoke anterior upper-arm or shoulder pain. Compare muscle-belly tenderness with pain over the long-head tendon and front of the elbow. Persistent thumb or hand symptoms need their own examination.

What Patients Report

  • Pain when lifting objects
  • Pain at front of shoulder
  • Elbow pain when flexing
  • Weakness when carrying

What Makes It Worse

  • Elbow flexion
  • Supination
  • Lifting heavy items
  • Throwing
  • Pull-ups
  • Carrying groceries
Browse related exercises (11)

Symptoms patients report

Anterior shoulder pain with lifting Record whether pain centers on the bicipital groove or the upper-arm belly.

Pain during palm-up turning Compare effort-related pain with loss of supination strength.

Upper-arm ache after increased training Review curls, pulling, swimming and carrying volume alongside recovery between sessions.

Contributors to assess

Increased pulling or curl load A rapid change in weight, repetitions or frequency can exceed current tolerance.

Repeated overhead use Anterior shoulder symptoms may coexist with cuff or labral pathology.

Unexpected eccentric load A heavy object forcing the elbow straight can injure the distal tendon.

For clinicians and supervised training

Clinical reference

Pain during a curl or palm-up lift is not specific to one biceps lesion. A sudden pop, bruising, altered muscle contour or marked supination weakness changes the assessment.

Anatomy and palpation

Anatomical relationships

Both heads arise from the scapula: the long head near the superior glenoid and the short head at the coracoid. They converge into the anterior arm and attach distally to the radial tuberosity, with an aponeurotic expansion into forearm fascia.[1][2][3]

  • Bicipital groove at the anterior proximal humerus marks the long-head tendon region.
  • Central anterior arm contains the accessible muscle belly.
  • The distal tendon crosses the front of the elbow toward the radius.

Nearby structures. Brachialis lies deep to biceps. The brachial artery and median nerve lie medially in the arm and elbow region; the musculocutaneous nerve supplies biceps. Avoid probing the medial arm or elbow crease.

Palpation

Patient position. Seated or supine with the upper arm supported, elbow slightly bent and palm facing upward.

Find the landmarks

  • Find the front of the proximal humerus and orient to the groove with gentle shoulder rotation.
  • Locate the central muscle belly during a light elbow-flexion effort, then relax.
  • Identify the distal tendon region without digging into the elbow crease.

Examination sequence

  1. Inspect for bruising or a changed contour before applying pressure.
  2. Compare gentle contact at the groove, central belly and distal tendon as separate sites.
  3. Record familiar local pain and repeat a light palm-up lift; hand tingling ends the pressure examination.

Document the findings

  • Groove tenderness with anterior shoulder loading differs from diffuse post-exercise belly soreness.
  • A contour change and strength loss after trauma suggest tendon injury.

Limits and precautions

  • Avoid deep medial-arm or antecubital pressure. Do not repeatedly load a suspected acute rupture.
[1][2][3]

Examination and tests

2

Graded resisted supination[1][3]

Measure palm-up turning tolerance and identify disproportionate weakness.

Position
Elbow supported at about 90 degrees, forearm neutral and wrist relaxed.
Technique
Resist a slow palm-up turn at the distal forearm. Compare force and pain location with the other side, using light resistance initially.
Positive finding
Familiar anterior shoulder, upper-arm or elbow pain, or clear force loss.
Interpretation
The pain location guides tendon versus muscle assessment; marked weakness after a sudden load raises concern for distal rupture.
Limitations
Supinator also contributes. This test does not isolate a trigger point or independently diagnose long-head tendinopathy.

Elbow flexion and controlled lowering[1][2]

Compare biceps-region load tolerance with supination findings.

Position
Upper arm beside the trunk, elbow bent, palm upward and shoulder relaxed.
Technique
Apply gentle downward resistance while the patient holds the elbow bent, then compare a slow unloaded bend and lower. Record the site and behavior of pain.
Positive finding
Familiar pain or inability to hold a low load with comparable effort.
Interpretation
Supports a functional loading baseline; shoulder-localized pain prompts examination of the groove, cuff and joint.
Limitations
Brachialis and brachioradialis assist elbow flexion; pain inhibition can reduce force without rupture.

Distinguishing other causes

Long-head biceps tendinopathy[2]

Findings that matter. Anterior groove tenderness and pain with shoulder use, often with other shoulder findings.

Next step. Assess cuff, joint and tendon; consider ultrasound when the diagnosis or a proposed procedure requires clarification.

Distal biceps tendon rupture[3]

Findings that matter. Sudden eccentric load, elbow bruising or contour change and substantial palm-up turning weakness.

Next step. Prompt orthopaedic assessment; distinguish a distal rupture from a proximal long-head tear.

Rotator cuff-related shoulder pain[4][2]

Findings that matter. Painful elevation, cuff-loading pain or weakness, with symptoms not confined to the bicipital groove.

Next step. Use a regional shoulder examination and rehabilitation pathway.

Glenohumeral or labral disorder[2]

Findings that matter. Mechanical catching, instability history or substantial passive-motion restriction.

Next step. Examine the joint before attributing anterior pain to muscle tenderness.

Treatment selection and progression

Self-care and activity

Adjust curls and carrying[2]

Consider when. Load-related arm or anterior shoulder pain without signs of acute rupture.

Reduce the heaviest palm-up lifts, keep carried objects close and split loads. Preserve comfortable daily use.

Dose and review
Trial the changes over several ordinary work or training sessions.
Progression
Restore task duration, then weight, while tracking later-day and next-morning symptoms.
Stop or reassess
A pop, bruising or new marked weakness needs assessment.
Evidence and limits
Activity modification is supported by orthopaedic guidance; the best adjustment depends on the provoking task.

Exercise and rehabilitation

Graded elbow-flexion and supination loading[2][1]

Consider when. Assessed biceps-region loading pain with stable strength and no acute tear.

Support the upper arm, start with light elbow bending and controlled lowering, and add gentle palm-up resistance separately.

Dose and review
A starting example is one comfortable set of 6–8 slow repetitions on alternate days; select the load from examination.
Progression
Increase repetitions before weight, then restore the shoulder positions required for work or sport.
Stop or reassess
Reduce load for a sustained flare; investigate increasing weakness.
Evidence and limits
Strengthening and mobility are part of nonsurgical care. This starting dose is a clinical adaptation, not a validated biceps trigger-point protocol.

Clinician-delivered care

Muscle dry needling for selected long-head biceps tendinopathy[5]

Consider when. Assessed long-head tendinopathy with a familiar symptomatic muscle-belly site and persistent functional limitation.

A trained clinician may needle the examined long-head muscle site while accounting for nearby neurovascular structures. The trial targeted muscle, not a tendon-sheath injection.

Dose and review
The small trial delivered three treatments on days 1, 2 and 4, with assessment through day 15.
Progression
Recheck a palm-up lifting task and shoulder pain/disability before considering further treatment.
Stop or reassess
Stop for electrical pain or new sensory symptoms; review infection and bleeding risk before needling.
Evidence and limits
Thirty participants were compared with TENS. Selected pain/disability scores favored needling, but follow-up was short, there was no sham and muscle hardness did not improve.

Clinician-delivered care

Shockwave for long-head biceps tendinopathy[6]

Consider when. Clinically assessed long-head tendon pain with continuing shoulder activity limitation.

A clinician directs ESWT to the assessed long-head tendon region while maintaining stretching, strengthening and rehabilitation.

Dose and review
The 2026 trial used four weekly treatments: 2,000 pulses, 8 Hz and 0.12–0.25 mJ/mm². These are study parameters for clinician selection.
Progression
Compare activity pain and a consistent shoulder-function measure after the course and at week 6.
Stop or reassess
Reassess a suspected tear, intolerable treatment pain or persistent worsening before further exposure.
Evidence and limits
A 144-person factorial sham trial favored ESWT for function and pain through week 6. All groups received rehabilitation; longer-term benefit and tendon healing were not established.

Clinician-delivered care

Selected ultrasound-guided biceps tendon-sheath injection[7][2][8]

Consider when. Selected long-head tendon pain that remains functionally limiting after assessment and initial nonsurgical care.

A qualified clinician may discuss a corticosteroid injection around the long-head tendon within its sheath at the groove, avoiding injection into tendon substance.

Dose and review
One injection was studied; outcomes were reviewed at four weeks and six months. Drug choice and dose require the procedural assessment.
Progression
Use improved comfort to resume the agreed loading plan and reassess meaningful activity before any repeat injection.
Stop or reassess
Discuss tendon-rupture risk and review infection, diabetes and tendon integrity beforehand; new redness, fever or sudden strength loss afterward needs assessment.
Evidence and limits
In 44 patients, ultrasound guidance improved accuracy and outcomes versus palpation guidance. The study did not compare corticosteroid with placebo or rehabilitation alone.

Reassessment and follow-up

  • Repeat the same palm-up lift with its weight and shoulder position recorded.
  • Compare resisted supination and elbow-flexion force, separating pain from weakness.
  • Track comfortable overhead use and later-day response as carrying or training volume increases.

Evidence and sources

  1. University of Washington Muscle Atlas: Biceps Brachii

    2026 · University anatomical reference

    Accessed September 2026; access year. Supports attachments, actions and innervation. Examination contacts and starting exercises below are clinical adaptations, not validated trigger-point tests.

  2. AAOS OrthoInfo: Biceps Tendinitis

    2026 · Orthopaedic society patient guidance

    Accessed September 2026; access year. Describes anterior shoulder examination, associated cuff/labral problems, activity modification, rehabilitation and selected image-guided injection.

  3. AAOS OrthoInfo: Biceps Tendon Tear at the Elbow

    2026 · Orthopaedic society patient guidance

    Accessed September 2026; access year. Acute injury, contour change and supination weakness warrant assessment for distal tendon rupture.

  4. Rotator Cuff Tendinopathy Diagnosis, Nonsurgical Medical Care, and Rehabilitation: A Clinical Practice Guideline

    2025 · Clinical practice guideline

    Assessment, education and active rehabilitation for rotator cuff tendinopathy. Recommendation 26 permits regional manual therapy for short-term pain relief; no isolated deltoid or latissimus effect or universal manual dose is established.

  5. Pain, function and peritendinous effusion improvement after dry needling in patients with long head of biceps brachii tendinopathy: a single-blind randomized clinical trial

    2024 · Randomized active-comparator trial

    Thirty participants; long-head muscle trigger-point needling versus TENS on days 1, 2 and 4. Selected shoulder pain/disability outcomes favored needling through day 15; no sham, longer follow-up or tissue-hardness improvement.

  6. Effect of Extracorporeal Shock Wave Therapy Combined With Kinesio Taping on Shoulder Function in Patients With Long-Head Biceps Tendinopathy: A Randomized Controlled Trial

    2026 · Factorial randomized sham-controlled trial

    144 adults; ESWT and taping tested against their respective shams alongside four weeks of rehabilitation. ESWT improved shoulder function and pain through week 6; taping had no significant main effect on Constant-Murley function. Thirteen lost to follow-up; intention-to-treat analysis.

  7. Ultrasound-guided versus palpation-guided corticosteroid injections for tendinosis of the long head of the biceps: A randomized comparative study

    2020 · Randomized guidance-technique comparison

    44 patients, one bicipital-groove corticosteroid injection. Ultrasound guidance improved accuracy and clinical outcomes at four weeks and six months versus palpation guidance; no placebo or rehabilitation-only arm.

  8. Use and safety of corticosteroid injections in joints and musculoskeletal soft tissue: multisociety guidelines

    2026 · Multisociety procedural guideline

    Published online in 2025, print 2026. Addresses injection safety and reported tendon rupture, including biceps; recommends caution with repeated tendon-sheath injections.

Associated Trigger Points