Arm Pain After Breast Cancer Surgery: Causes And Best Exercises

Arm pain after breast cancer surgery can be worrying, especially when you are already recovering from surgery and other cancer treatments.

You may notice aching in the upper arm, discomfort around the armpit, pulling when you move your shoulder, or pain that makes everyday activities more difficult.

Arm pain does not have one single cause.

It can be related to postoperative healing, reduced shoulder movement, muscle weakness, nerve irritation, scar tissue, axillary web syndrome (cording), or lymphatic changes after lymph-node treatment.

The good news is that many movement-related problems can be assessed and managed through appropriate rehabilitation.

Physiotherapy can help identify what may be contributing to your symptoms and gradually restore movement, strength and confidence while respecting your stage of recovery.

Why Does Arm Pain Happen After Breast Cancer Surgery?

Breast cancer surgery can affect more than the breast itself.

Procedures involving the armpit and lymph nodes may influence the tissues, nerves and muscles that contribute to comfortable arm movement.

The type and intensity of symptoms can therefore vary considerably between individuals.

Postoperative Pain and Healing

Some discomfort is expected during the healing period.

Your body has undergone surgery, and the surrounding tissues need time to recover.

Pain can also change how you move.

You may instinctively keep your arm close to your body or avoid reaching overhead because certain movements feel uncomfortable.

When this protective pattern continues, reduced movement can contribute to stiffness and weakness, potentially making normal arm use more difficult.

Shoulder and Chest-Wall Stiffness

Pain may sometimes be felt in the arm even when the underlying restriction is closer to the shoulder or chest.

For example, tightness around the chest wall can alter shoulder movement.

If the shoulder cannot move comfortably through its normal range, muscles around the shoulder and upper arm may have to work differently.

This is why a physiotherapy assessment should consider the shoulder, chest wall, upper back and arm together rather than treating the painful area in isolation.

Nerve-Related Symptoms

Some people experience altered sensation after breast or lymph-node surgery.

Nerve-related symptoms may include:

• Tingling
• Numbness
• Burning
• Pins and needles
• Shooting or electric-like pain
• Increased sensitivity to touch

These symptoms can occur because nerves may be affected by surgery or surrounding tissue changes.

Persistent, severe or worsening neurological symptoms should be discussed with your medical team rather than assumed to be ordinary postoperative soreness.

Can Lymph-Node Surgery Cause Arm Pain?

Yes, lymph-node procedures can be associated with upper-limb symptoms.

One possible cause is axillary web syndrome (AWS), commonly called cording.

It can occur after axillary lymph-node surgery and may produce a tight, pulling sensation extending from the armpit toward the arm.

A systematic review identified axillary web syndrome as an important postoperative complication associated with pain and reduced upper-limb function (Di Filippo et al., 2022).

Cording can make raising the arm uncomfortable and may create the sensation that something is “pulling” underneath the skin.

A physiotherapist can assess whether this is contributing to your symptoms and determine an appropriate rehabilitation strategy.

What Does Arm Pain After Surgery Feel Like?

Arm pain can present in different ways depending on the underlying cause.

You may experience:

• A dull ache in the upper arm
• Tightness around the armpit
• Pulling during shoulder movement
• Pain when reaching overhead
• Discomfort when reaching behind your back
• Burning or tingling sensations
• Tenderness around the surgical area
• Arm heaviness
• Pain associated with weakness or fatigue

The location and behaviour of your symptoms provide useful information during a physiotherapy assessment.

For example, pain that appears primarily during a particular shoulder movement may have a different contributing factor from persistent burning or altered sensation.

How Does Physiotherapy Assess Arm Pain?

A physiotherapist will first consider your medical and surgical history.

Your assessment may include questions about:

• The type of breast surgery
• Lymph-node procedures
• Reconstruction
• Radiotherapy
• Current medications and treatments
• When the pain began
• What movements aggravate it
• Changes in sensation
• Swelling or heaviness
• Activities you are struggling with

The physiotherapist may then assess shoulder range of motion, strength and functional movement.

They may also look at the shoulder blade, chest wall, scar area and tissues around the armpit.

Why Is This Assessment Important?

Arm pain is a symptom, not a diagnosis.

Two people can report “arm pain” after breast cancer surgery while having completely different contributing factors.

One may have stiffness and weakness, another may have cording, while another may have symptoms requiring medical assessment.

Identifying the likely contributors helps ensure that treatment is appropriately targeted.

Can Physiotherapy Help Reduce Arm Pain?

Physiotherapy can be an important part of rehabilitation for movement-related pain following breast cancer treatment.

Treatment may include:

• Gentle range-of-motion exercises
• Progressive strengthening
• Shoulder-blade exercises
• Postural and movement education
• Functional activity training
• Scar-management techniques when appropriate
• Cording-related rehabilitation
• Guidance on gradually returning to physical activity

Exercise-based rehabilitation has been shown to improve upper-limb function and shoulder mobility following breast cancer treatment (McNeely et al., 2010).

The purpose is not simply to make the arm stronger. It is to help you use the arm comfortably and confidently again.

What Exercises Might a Physiotherapist Recommend?

The exercises selected depend on your surgery, symptoms and stage of healing.

Gentle Shoulder Movement

Controlled shoulder flexion, abduction and rotation may be introduced to gradually restore range of motion.

These movements should be performed within the limits recommended by your healthcare team.

Shoulder-Blade Exercises

Exercises involving the shoulder blade can help restore coordinated upper-body movement.

Examples may include gentle scapular retraction and controlled shoulder movements.

Progressive Strengthening

Once healing allows, strengthening exercises can gradually be introduced.

Resistance bands, light weights or body-weight exercises may eventually become part of rehabilitation.

Research supports exercise as an important component of rehabilitation after breast cancer treatment, with benefits for physical function and quality of life (Campbell et al., 2019).

The progression should be individualised rather than based on a fixed timeline.

Should You Avoid Using the Painful Arm?

Not necessarily.

During the initial healing period, certain movements may need to be restricted according to your surgeon’s instructions.

However, once movement has been medically cleared, prolonged unnecessary avoidance can contribute to stiffness, weakness and reduced confidence.

The aim is not to ignore pain, but to understand it and gradually restore appropriate movement.

If an exercise consistently causes significant or worsening symptoms, the program may need to be modified.

When Is Arm Pain a Reason to Seek Medical Advice?

Not every symptom following breast cancer surgery should automatically be attributed to normal recovery.

Contact your healthcare team if you develop:

• New or rapidly increasing arm swelling
• Significant redness or warmth
• Sudden severe pain
• Fever or signs of infection
• New or worsening numbness or weakness
• Wound changes
• Persistent symptoms that are getting worse rather than better

New arm swelling can sometimes be associated with lymphoedema, infection or other complications and should be appropriately assessed.

How Is Arm Pain After Breast Cancer Surgery Treated With Physiotherapy?

Physiotherapy treatment for arm pain depends on why the pain is occurring.

A program for postoperative stiffness will look different from one for cording, nerve-related symptoms or lymphoedema.

The overall aim is to restore comfortable movement and function gradually while respecting healing and ongoing cancer treatment.

Gentle Mobility Exercises

If your healthcare team has cleared movement, gentle shoulder exercises may help restore range of motion.

A physiotherapist may introduce movements such as:

• Shoulder flexion
• Shoulder abduction
• Gentle shoulder rotation
• Assisted arm elevation
• Shoulder-blade movements

The movements should be controlled rather than forced.

Gradually increasing range can help reduce the effects of prolonged protective movement.

Exercise-based rehabilitation has been shown to improve shoulder range of motion and upper-limb function following breast cancer treatment (McNeely et al., 2010)

Can Strengthening Exercises Help Arm Pain?

Once healing has progressed sufficiently, strengthening becomes an important part of rehabilitation.

After surgery, reduced activity can lead to weakness in the shoulder and arm.

Weakness may then make everyday activities more demanding, which can encourage further avoidance.

A progressive strengthening program can gradually rebuild capacity.

Exercises may include:

• Resistance-band rows
• Shoulder external rotation
• Light biceps and triceps exercises
• Wall push-ups
• Controlled shoulder raises
• Functional lifting exercises

Strengthening should be introduced according to your recovery rather than according to a fixed number of days after surgery.

Evidence supports progressive resistance exercise for breast cancer survivors, including individuals at risk of breast-cancer-related lymphoedema (Schmitz et al., 2009).

What If Arm Pain Is Caused by Cording?

When axillary web syndrome is contributing to pain or restricted movement, treatment may focus on restoring mobility around the shoulder and arm.

Depending on the individual assessment, physiotherapy may include:

• Gentle stretching
• Active shoulder movement
• Progressive exercises
• Soft-tissue or manual techniques when appropriate
• Functional movement training

Research suggests that physiotherapy interventions can improve symptoms and upper-limb function in people with axillary web syndrome, although treatment approaches vary between studies (Lippi et al., 2022).

The important point is that cording should not simply be forced or aggressively stretched.

Treatment should be guided by an appropriate assessment.

Can Scar Management Help?

If the surgical wound has completely healed, scar mobility may be assessed as part of rehabilitation.

A scar that feels tight may contribute to restricted movement around the chest or armpit.

When appropriate, a physiotherapist may use scar-mobility techniques alongside exercises.

Scar treatment should never be performed over an open, infected or incompletely healed wound.

What If There Is Arm Swelling?

Arm swelling, heaviness or a feeling of tightness may require assessment for lymphoedema.

Lymphoedema can develop after lymph-node surgery or radiation treatment and may affect the arm, hand, breast or chest.

Physiotherapy for lymphoedema may involve education, exercise and other appropriate management strategies depending on the individual’s presentation.

Importantly, new or increasing swelling should not simply be treated as ordinary postoperative soreness.

It is worth discussing with your healthcare team so the cause can be identified.

How Should Exercise Progress?

Rehabilitation generally moves from easier activities toward more demanding ones.

A simplified progression may look like:

Gentle mobility → active movement → strengthening → functional activity → return to usual exercise

This does not mean everyone follows exactly the same sequence.

Your physiotherapist may combine mobility and strengthening exercises depending on your symptoms and treatment stage.

Pay Attention to Your Response

A little muscular effort during rehabilitation can be expected, but significant or worsening pain should not be ignored.

If symptoms consistently increase after an exercise session, the exercise, intensity or volume may need to be modified.

The aim is progress, not punishment.

Can Physiotherapy Help You Return to Normal Activities?

Yes. One of the most important purposes of rehabilitation is translating improved movement and strength into everyday function.

Your program may eventually incorporate activities such as:

• Reaching overhead
• Carrying shopping
• Dressing
• Household activities
• Returning to work
• Driving, when medically appropriate
• Exercise and recreational activities

A 2025 systematic review and meta-analysis found that exercise-based postoperative rehabilitation can improve muscle strength, shoulder range of motion and upper-limb function in people following breast cancer surgery (Liu et al., 2025).

The goal is therefore not simply to achieve a particular measurement on a shoulder test. It is to help you use your arm confidently in real life.

What Should You Remember About Arm Pain After Surgery?

Arm pain can be part of recovery, but persistent symptoms deserve attention.

Pain may come from stiffness, weakness, cording, scar-related restriction, nerve-related changes or lymphatic problems.

Because these causes require different approaches, a physiotherapy assessment can be valuable when symptoms are persistent or interfering with daily life.

Most importantly, rehabilitation should be individualised, progressive and coordinated with your cancer-care team.

How Long Does Arm Pain Last After Breast Cancer Surgery?

There is no single recovery timeline for arm pain after breast cancer surgery.

Some people experience improvement within weeks, while others may have symptoms for several months, particularly after lymph-node surgery, radiotherapy or more extensive procedures.

Recovery can also change over time.

You may feel better as the surgical area heals but later notice stiffness, weakness or tightness when you begin using the arm more.

What matters is the overall trend.

Gradual improvement in movement, strength and daily function is generally more reassuring than persistent or worsening symptoms.

Can Arm Pain Be Prevented?

Not every cause of arm pain can be prevented, but rehabilitation can help reduce the impact of reduced movement and weakness.

Once your surgical team has cleared movement, regularly performing your prescribed exercises can help maintain shoulder mobility and gradually rebuild strength.

It is also useful to avoid keeping the affected arm completely inactive for longer than necessary.

At the same time, recovery should not be rushed by forcing painful movements or lifting more than recommended.

What Are the Lesser-Known Causes of Arm Pain?

Pain Can Come From Somewhere Other Than the Arm

Although you may feel pain in the upper arm, the contributing restriction may be around the shoulder, chest wall, armpit or upper back.

This is why physiotherapists assess movement throughout the upper body rather than concentrating only on the painful area.

Cording Can Feel Like a Tight String

Axillary web syndrome can create a pulling or tight sensation that travels from the armpit down the arm. It may become particularly noticeable when you raise your arm.

Recognising this pattern can help distinguish cording from ordinary postoperative stiffness.

Weakness Can Maintain Discomfort

When an arm is used less because of pain, muscles can become weaker.

Reduced strength can then make ordinary activities more demanding.

Progressive strengthening, when appropriate, can help break this cycle.

Swelling Should Not Be Ignored

New swelling, heaviness or tightness in the arm or hand may require assessment for lymphoedema or another postoperative issue.

Early assessment can help determine the appropriate management rather than assuming the symptom is simply part of recovery.

When Should You Contact Your Healthcare Team?

Seek medical advice if you develop new, severe or worsening symptoms, particularly:

• Sudden or significant arm swelling
• Increasing redness or warmth
• Fever or signs of infection
• Severe or unexplained pain
• New weakness
• Increasing numbness or altered sensation
• Changes around the surgical wound
• Symptoms that are progressively worsening

These symptoms do not necessarily indicate a serious complication, but they should be assessed appropriately.

Final Thoughts

Arm pain after breast cancer surgery can have several causes, from normal postoperative healing and reduced movement to cording, scar restrictions, weakness or lymphatic changes.

Physiotherapy can help identify these contributing factors and create a rehabilitation programme that progresses from comfortable movement toward strength and everyday function.

You do not need to rush recovery, but you also do not have to accept persistent limitations without assessment.

The right rehabilitation approach can help you gradually regain movement, strength and confidence in your arm.

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Medical Disclaimer!

This article has been reviewed and written under the guidance of our Head Physiotherapist, Dr. Kruti Raj (PT, MUHS,CPT,CMPT). The information shared is intended for educational purposes only and should not be considered a substitute for personalized medical advice, diagnosis, or treatment.

Please consult us or any other qualified healthcare professional before beginning any exercise program, especially if you are experiencing pain, recovering from injury, or managing a medical condition.