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Phantom limb and amputation pain

Most people who lose a limb feel sensations in the missing part, and many experience genuine pain there — phantom limb pain. It is distinct from pain in the residual limb and from neuroma pain, and separating the three changes what will help.

Feeling a limb that is no longer there is not imagination — it is the normal consequence of how the brain maps the body. The map outlives the limb. For most amputees these phantom sensations are strange but painless; for a substantial proportion they hurt, sometimes severely: cramping, burning, electric jolts, or the vivid sense of the missing hand clenched into a fist that cannot be opened.

Three problems, commonly confused. Pain after amputation is usually treated as one complaint when it is typically several. Phantom limb pain is felt in the missing part and generated by changes in the spinal cord and brain. Neuroma pain arises where the cut nerve has formed a sensitive regrowth in the residual limb — sharp, electric, reproducible by pressing one spot. Residual limb pain comes from the limb's own tissues: bone, scar, soft tissue, or a socket that no longer fits. Each responds to different treatment, and most people referred here have more than one at once. Sorting them out is the assessment's central task.

Why does phantom pain happen? After amputation, the brain regions that represented the limb reorganise, and the nervous system's traffic from the severed nerves changes. The result can be pain signals attributed to the missing part. Pain before the amputation, and pain around the time of surgery, appear to increase the risk — one reason good early pain control matters.

What helps phantom pain? Approaches that retrain the brain's map have the most consistent support: mirror therapy and graded motor imagery, structured desensitisation, and early, consistent prosthetic use. Medications matched to nerve pain mechanisms help some people. Where a neuroma coexists — common — treating it can lower the overall pain enough for the retraining work to succeed.

What helps neuroma and residual limb pain? A symptomatic neuroma can usually be found on ultrasound, confirmed with a small diagnostic injection, and treated with targeted injection or radiofrequency, with surgical referral in selected cases. Residual limb pain is traced to its source — and if the socket is the problem, the answer is prosthetic, not medical: liaison with your prosthetist is part of care here.

The rehabilitation frame. Dr Martin's rehabilitation training included amputee medicine, and pain treatment is planned alongside prosthetic goals, gait and function rather than separately from them. The measure of success is not only a lower pain score but a limb — and a life — that gets used.

Sources: International Association for the Study of Pain; Healthdirect Australia.