Cancer treatment saves lives, and it also takes a toll on the body that often lasts long after the treatment ends. Surgery, chemotherapy, radiotherapy and long periods of reduced activity all affect strength, stamina, joint movement and balance. Rehabilitation is the part of cancer care that addresses what treatment leaves behind.
Medically reviewed by Dr Harshita Sharma, MPT
Last reviewed: 2 August 2026 · Our clinical team
What cancer rehabilitation is for
The World Health Organization describes rehabilitation as care that helps people be as independent as possible in everyday activities — not a service reserved for the end of treatment. In cancer care it is used at three points: before treatment to build reserve, during treatment to limit decline, and afterwards to recover function.
The problems physiotherapy most often addresses are:
- Cancer-related fatigue — an exhaustion that is not relieved by rest and is different from ordinary tiredness
- Deconditioning — loss of muscle strength and exercise tolerance after weeks of reduced activity
- Shoulder and arm stiffness after breast or chest wall surgery, or after radiotherapy to that area
- Swelling (lymphoedema) in an arm or leg after lymph nodes have been removed or irradiated
- Balance problems and numbness from chemotherapy-related peripheral neuropathy
- Breathlessness and reduced chest movement after thoracic surgery
Fatigue: the counter-intuitive part
The instinctive response to cancer-related fatigue is to rest more. Prolonged rest generally makes it worse, because muscle strength and cardiovascular fitness fall quickly during inactivity, so the same daily task takes a larger share of what the body can do.
Graded activity — starting well below what feels like a limit and increasing slowly — is the usual approach. The starting point is deliberately modest, and progression is guided by how someone recovers over the following day rather than by how they feel during the session.
Shoulder movement after breast cancer surgery
Surgery to the breast, chest wall or armpit, and radiotherapy to the same region, commonly reduce shoulder movement. Early gentle movement within the limits set by the surgical team usually prevents this becoming a long-term restriction. The timing matters and is not the same for everyone — it depends on wound healing, drains, and the type of reconstruction, so it should be agreed with the surgical team rather than assumed.
Lymphoedema
Lymphoedema is swelling caused by lymph fluid that cannot drain normally, most often after lymph nodes have been removed or treated with radiotherapy. The NHS describes it as a long-term condition that can usually be controlled, though not always cured.
Physiotherapy management typically combines skin care, movement and exercise, compression, and specific manual techniques. Importantly, exercise does not cause lymphoedema, and people who have had lymph nodes removed are generally encouraged to stay active rather than protect the limb by avoiding use.
When swelling needs a doctor, not a physiotherapist
Seek medical assessment promptly if a swollen limb becomes red, hot or painful, if there is fever, or if swelling appears suddenly. Sudden swelling in one leg with pain or breathlessness needs urgent medical attention.
Chemotherapy-induced peripheral neuropathy
Numbness, tingling or reduced sensation in the hands and feet affects walking and balance, and increases the risk of falls and of unnoticed injuries to the feet. Rehabilitation focuses on balance training, safe footwear, foot checks and home hazards. Any new or worsening numbness should be reported to the oncology team, because it may affect treatment decisions.
What we do not claim
Physiotherapy does not treat cancer and does not alter the course of the disease. It addresses the effects of the disease and of its treatment on movement, strength and daily function. Decisions about oncological treatment always rest with the treating oncology team, and rehabilitation runs alongside that care rather than in place of it.
Starting rehabilitation at APARC
Assessment covers current activity level, treatment stage and side effects, strength and range of movement, balance, and the specific daily activities that have become difficult. Programmes are adjusted around treatment cycles — what is reasonable in the days after chemotherapy is different from a fortnight later.
Related APARC services include post-operative rehabilitation after cancer surgery, geriatric physiotherapy where age and treatment effects combine, home physiotherapy when travelling to a centre is difficult, and cardiopulmonary physiotherapy where breathlessness is the main problem.
Prehabilitation: starting before treatment
Where there is a gap between diagnosis and surgery or chemotherapy, that interval can be used rather than simply waited out. Prehabilitation aims to raise the starting point — exercise capacity, strength and nutrition — so that the decline during treatment starts from higher up. It also gives people something active to do during a period that otherwise feels entirely passive, which matters more than it sounds.
Whether prehabilitation is appropriate, and how vigorous it can be, depends on the cancer, the planned treatment and the individual’s medical condition. It is agreed with the oncology team, not started independently.
Bone metastases change the rules
Where cancer has spread to bone, exercise has to be modified. Loading a bone weakened by metastatic disease carries a fracture risk, and the modifications depend on which bones are affected and how extensively. This is a specific reason why a generic strengthening programme is unsafe in cancer rehabilitation, and why the oncology team’s input on bone involvement is needed before loading begins.
New, unexplained or worsening bone pain — particularly in the spine, hips or thighs — should be reported before continuing exercise. Sudden severe back pain with leg weakness, numbness around the groin, or loss of bladder or bowel control needs emergency assessment.
Pacing: the practical version
Pacing is often explained badly. It does not mean doing less. It means distributing activity so that a good day is not followed by two bad ones.
- Establish what you can do comfortably on an average day — not a good day
- Break larger tasks into segments with rest between, rather than pushing to completion
- Increase gradually and only when the current level is comfortable for several days
- Plan demanding activities for the part of the treatment cycle when energy is typically highest
The measure of whether a session was appropriate is how you feel the next day, not how you felt during it.
Questions worth asking your oncology team
- Are there restrictions on exercise, and do any apply to a specific limb or region?
- Is there any bone involvement that affects loading?
- Are blood counts currently a reason to modify activity?
- Is there a lymph node clearance that affects one arm or leg?
- Which symptoms should prompt me to stop and contact you?
References
- World Health Organization — Rehabilitation fact sheet. www.who.int/news-room/fact-sheets/detail/rehabilitation
- World Health Organization — Cancer fact sheet. www.who.int/news-room/fact-sheets/detail/cancer
- World Health Organization — Breast cancer fact sheet. www.who.int/news-room/fact-sheets/detail/breast-cancer
- NHS — Lymphoedema. www.nhs.uk/conditions/lymphoedema/
Related
Medical disclaimer
This article is for general information and education only. It is not medical advice, diagnosis or treatment, and it is not a substitute for consultation with a qualified healthcare professional. Every person’s condition is different — any rehabilitation programme should be personalised following a proper assessment. Never disregard or delay professional medical advice because of something you have read here.
In an emergency, contact your local emergency services or go to the nearest hospital immediately.
To speak with an APARC physiotherapist, contact us or book an appointment.