What does denervation mean?
Denervation is the loss or removal of nerve supply to a muscle, organ, or other tissue. It occurs naturally as a consequence of injury, disease, or prolonged pressure on nerves — for example, when a herniated disc compresses a nerve root and the muscles it serves weaken or waste away. The term also has a deliberate, therapeutic sense: surgeons perform procedures such as radiofrequency denervation to sever specific nerves, interrupting pain signals or calming overactive structures like arthritic joints. Denervation carries a clinical, technical register rather than an emotional one, appearing chiefly in medical literature, hospital reports, and specialist discussion. Its opposite, reinnervation, describes nerves growing back into a previously denervated area, a process central to research into nerve repair and regeneration. Because muscles depend on their nerve connections for tone and survival, denervation leads predictably to weakness and atrophy, making the word essential in neurology and orthopaedic medicine.
The loss or removal of nerve supply to a body part, tissue, or organ.
"Prolonged denervation caused irreversible wasting of the patient's hand muscles."
Usually uncountable when describing the general process; countable when referring to individual instances or procedures.
A surgical procedure that intentionally cuts or destroys nerves to relieve pain or spasm.
"The surgeon recommended facet joint denervation for the chronic lower back pain."
Often preceded by the technique used, e.g. radiofrequency or chemical denervation.
The plural is uncommon and appears mainly in medical writing referring to multiple separate instances or procedures.
"Multiple denervations were performed along the lumbar spine to control the patient's pain."
Surgeons can deliberately cut the nerve to an organ — a procedure called denervation — to switch off chronic pain without removing anything at all.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of denervation
Denervation derives from Latin nervus, meaning sinew or nerve, combined with the negative prefix de- (indicating removal) and the suffix -ation (indicating a process). It entered English through medical Latin alongside its counterpart innervation during the nineteenth-century growth of modern neuroscience. Related words sharing the nervus root include nervous, enervate, and innervate.
Related word forms
How denervation is actually used
Denervation is a technical term used almost exclusively in medical and scientific contexts; it is rare in everyday conversation. It is typically uncountable when referring to the general process but may be pluralized (denervations) when referring to multiple distinct instances or procedures.
Easily confused with denervation
Deprivation means being denied something generally (food, sleep), while denervation specifically refers to the loss of nerve supply.
Innervation is the presence or supply of nerves to a part of the body, whereas denervation is the loss or removal of that nerve supply.