What does carpus mean?
Carpus refers to the anatomical region commonly known as the wrist: the joint connecting the forearm to the hand, formed from eight small bones known as the carpals. These bones are arranged in two rows of four, allowing the flexibility and range of motion that make the human hand so dexterous. While most people would simply say 'wrist', the term carpus belongs to the precise vocabulary of anatomy, medicine, veterinary science, and zoology. It also extends to other animals: in horses, for example, what is popularly called the 'knee' on the foreleg is anatomically the carpus, while in birds it forms part of the wing joint. The adjective derived from it is 'carpal', as in 'carpal tunnel syndrome', a well-known condition involving compression of a nerve at the wrist. Because of its clinical resonance, carpus carries a technical, authoritative connotation rather than an everyday one.
nounThe carpus is the group of eight small bones that make up the wrist in humans and the corresponding joint region in the forelimb of other vertebrates.
- In anatomy: the joint between the forearm and the hand (or forefoot), consisting of eight small carpal bones arranged in two rows; anatomically, the wrist.
- In zoology and comparative anatomy: the corresponding region of joints in the forelimb of other animals, such as the knee of a horse's foreleg or the wrist-like joint in birds' wings.
"The surgeon examined the fractured carpus before recommending a course of physiotherapy."
"An X-ray revealed a hairline fracture in one of the small bones of her carpus."
"In the horse's forelimb, the carpus corresponds to what is colloquially called the knee."
The Latinate plural 'carpi' is preferred in medical and scientific writing; 'carpuses' is rare and generally avoided in formal contexts.
"Both carpi showed signs of degenerative change on the follow-up scans."
Your 'wrist' has a fancy Latin name — carpus — and it's built from eight tiny bones, the same number as the bones in your ankle.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of carpus
The word carpus comes from the ancient Greek 'karpos' (καρπός), meaning 'wrist', and entered English via New Latin during the development of modern anatomical terminology, becoming established in English scientific usage by the seventeenth century. The same Greek root underlies several related anatomical terms, including 'carpal' (relating to the wrist), 'metacarpus' (the bones of the palm), and 'carpometacarpal' (describing the joint where these structures meet). The parallel term for the ankle, tarsus, derives from a different Greek root but was adopted through the same anatomical tradition.
Related word forms
How carpus is actually used
Carpus is a technical term used primarily in anatomy, medicine, veterinary science, and zoology. In everyday speech, English speakers simply say 'wrist'. It is a formal register word and appears mostly in clinical, academic, or specialist writing. The plural form 'carpi' is standard in medical literature, though 'carpuses' occasionally occurs in informal contexts.
Easily confused with carpus
The tarsus is the comparable group of bones forming the ankle, whereas the carpus is the equivalent structure in the wrist.
The metacarpus consists of the five bones of the palm beyond the wrist, while the carpus is the cluster of eight wrist bones themselves.