What does canulated mean?
Canulated describes something that has been formed with, or fitted with, a hollow tube or channel running through its length. In practice, the word belongs almost entirely to medicine — especially orthopaedic surgery — where canulated screws, nails, drills, and needles are designed with a central bore so they can be threaded over a guide wire or guide pin, allowing precise placement before the wire is withdrawn. A canulated instrument is therefore the opposite of a solid one: its open core is a deliberate engineering feature rather than a defect. The term derives from 'cannula', the Latin-derived name for the small tube used to access veins, cavities, or wounds, and ultimately traces back to the Latin 'canna', meaning a reed or tube. Writers and practitioners should note that the double-n spelling 'cannulated' predominates in contemporary medical literature, though 'canulated' remains an accepted variant. For general readers, encountering the word signals technical surgical language rather than everyday English.
Having a hollow bore or channel running through it; fitted for use with a cannula or guide wire.
"The canulated screw was advanced over the guide pin until it reached the subchondral bone."
Primarily orthopaedic and surgical terminology; the double-n variant 'cannulated' is now more common.
Past participle of the verb 'to canulate': to insert a cannula into a vessel or cavity.
"The vein had been successfully canulated on the first attempt."
This verbal sense is rare compared with the adjectival use.
In modern orthopedic surgery, the hollow core of a canulated screw lets surgeons slide it over a guide wire — a tiny tube that keeps implants perfectly on target.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of canulated
Canulated derives from the noun 'cannula', a small tube used in surgery, which comes from Latin 'canna' meaning 'reed' or 'tube'. The verb 'to canulate/cannulate' arose in nineteenth-century medical usage, and its past participle came to describe instruments and implants bored with a central channel. Cognates include 'canal' and 'channel', which share the same ultimate root. In current usage the variant spelling with a double n ('cannulated') is more frequent than the single-n form.
Related word forms
How canulated is actually used
Almost exclusively used in medical, surgical, and veterinary contexts, particularly orthopaedics. The spelling with two n's ('cannulated') is considerably more common in current medical literature; 'canulated' is an accepted variant. The word functions chiefly as a participial adjective derived from the verb 'canulate'.
Easily confused with canulated
Cannulated (with two n's) is the more common spelling of the same word; 'canulated' with one n is a variant spelling, not a different word.