What is repetitive strain injury?

Repetitive strain injury (RSI) is an umbrella term for pain and dysfunction in muscles, tendons, and nerves caused by repetitive movements, sustained postures, or forceful exertions. Common presentations include tennis elbow, carpal tunnel syndrome, de Quervain's tenosynovitis, and rotator cuff tendinopathy. It is predominantly an occupational or activity-related condition driven by cumulative load exceeding tissue tolerance.

What complementary approaches help RSI?

Activity modification (reducing provocative loading without total rest) is the most important immediate measure. Massage and soft tissue therapy address the muscular and fascial components. Acupuncture has evidence across multiple RSI presentations. Ergonomic assessment is important for occupationally-driven RSI — without addressing the causative activity, treatment effects are temporary. Progressive loading rehabilitation drives tissue remodelling and long-term recovery.

How important is ergonomics in preventing RSI?

Very important — occupational RSI is largely preventable through appropriate workstation setup, tool design, work-rest rotation, and training in neutral joint positions. Ergonomic assessment by a qualified occupational health practitioner or physiotherapist can identify specific risk factors and drive meaningful intervention. Employers have a legal duty to address ergonomic risk factors.

When does RSI need medical assessment?

Persistent or worsening symptoms despite activity modification and conservative management, neurological symptoms (numbness, tingling, weakness), or loss of function should be assessed. Specific RSI diagnoses including carpal tunnel syndrome, De Quervain's, and complex regional pain syndrome require targeted management beyond general RSI care.

Musculoskeletal Healthlow Risk

Repetitive Strain Injury

Pain and dysfunction in muscles, nerves, and tendons caused by repetitive movement, overuse, or sustained awkward postures — most commonly affecting the upper limbs.

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Reviewed by Dr. Ian Henderson · Microbiobial Health & Medicine26 March 2026Research-supported

Quick answer

Repetitive strain injury (RSI) involves pain, weakness, and reduced function in muscles, tendons, and nerves from repetitive use or sustained postures — commonly affecting the hands, wrists, forearms, and upper back. Physiotherapy, ergonomic adjustment, acupuncture, and workload management are core approaches.

Do any of these feel familiar?

Repetitive strain injury most commonly presents as an aching, burning, or throbbing pain in the affected area — typically the wrists, forearms, elbows, or shoulders — that worsens with continued use and eases with rest
Stiffness and weakness in the hands or arms are common, as is a tingling or numbness that can spread along the limb
Many people notice the pain creeping in gradually, initially only after extended periods of activity, then progressively earlier in the working day
Tasks that were once automatic — typing, writing, using a mouse — can become painful and limited
The impact on work and daily life is often underestimated by others

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