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(Redirected from Carpal bone)
:''This article is about Carpal bones. In Greek mythology, Carpus (Greek: Karpos, "fruit") was a son of Chloris and Zephyrus.''
In tetrapods, the 'carpus' is the cluster of bones in the hand between the radius and ulna and the metacarpus. The bones of the carpus do not belong to individual fingers, whereas those of the metacarpus do. The joint between the radius and ulna and the carpus is called the wrist. (The corresponding part of the foot is the tarsus.)
While this article focuses primarily on human anatomy, the carpal bones have evolved differently in different animals.
For example in some macropods, the scaphoid and lunar bones are fused into the scapholunar bone.[1]
There exist several Mnemonics to remember these bones:[2]
★ 'S'ome 'L'overs 'T'ry 'P'ositions 'T'hat 'T'hey 'C'an't 'H'andle.
★ 'S'ally 'l'eft 't'he 'p'arty / 't'o 't'ake 'C'athy 'h'ome.
★ 'S'tudents 'L'ike 'T'he 'P'rofessor / 'T'o 'T'each 'C'omplex 'H'ypotheses
★ 'S'top 'L'etting 'T'hose 'P'eople / 'T'ouch 'T'he 'C'adaver's 'H'ands
★ 'S'neh 'L'ata 'T'inde 'P'aka / 'T'ere 'T'inde 'C'atchey 'H'ain (A Hindi version which is quite funny and hence popular among students in India, which can be roughly translated as an exhortation to a woman called Sneh Lata, asking her to properly cook a vegetable.)
★ 'S'low 'L'ane 'T'o 'P'reston / 'T'om 'T'humb 'C'an 'H'um
★ SeLoTaPe/aTTaCH(you remove all the vowels for this one to get the eight (8) consonants)
★ 'S'acred 'L'overs 'T'ry 'P'ositions 'T'hat 'T'hey 'C'annot 'H'andle.
★ 'S'he 'L'ikes 'T'o 'P'lay / 'T'ry 'T'o 'C'atch 'H'er
★ 'S'enior 'L'ecturers 'T'ake 'P'rostitutes 'T'o 'T'he 'C'althorpe 'H'otel
Each bone (excepting the pisiform) presents six (6) surfaces.
Of these the ''palmar'' or ''anterior'' and the ''dorsal'' or ''posterior surfaces'' are rough, for ligamentous attachment; the dorsal surfaces being the broader, except in the lunate.
The ''superior'' or ''proximal,'' and ''inferior'' or ''distal surfaces'' are articular, the superior generally convex, the inferior concave; the ''medial'' and ''lateral surfaces'' are also articular where they are in contact with contiguous bones, otherwise they are rough and tuberculated.
The structure in all is similar: cancellous tissue enclosed in a layer of compact bone.
★ Bone terminology
★ Terms for anatomical location
★ Carpal tunnel
★ Carpal tunnel syndrome
1. http://home.brisnet.org.au/~mccready/Swamp%20Wallaby.htm
2.
★ - "Palm of the Hand: Carpal bones"
★
:''This article is about Carpal bones. In Greek mythology, Carpus (Greek: Karpos, "fruit") was a son of Chloris and Zephyrus.''
In tetrapods, the 'carpus' is the cluster of bones in the hand between the radius and ulna and the metacarpus. The bones of the carpus do not belong to individual fingers, whereas those of the metacarpus do. The joint between the radius and ulna and the carpus is called the wrist. (The corresponding part of the foot is the tarsus.)
| Contents |
| In other animals |
| The carpus |
| Mnemonics |
| Common characteristics of the carpal bones |
| See also |
| Additional images |
| References |
| External links |
In other animals
While this article focuses primarily on human anatomy, the carpal bones have evolved differently in different animals.
For example in some macropods, the scaphoid and lunar bones are fused into the scapholunar bone.[1]
The carpus
| 'Row' | 'Name' | 'Proximal/radial articulations' | 'Distal articulations' | 'Metacarpal articulations' |
| Proximal | Scaphoid | radius, lunate | trapezium, trapezoid, capitate | - |
| Proximal | Lunate | radius, scaphoid, triquetral | capitate, hamate | - |
| Proximal | Triquetral | lunate, pisiform (but NOT ulna) | hamate | - |
| Proximal | Pisiform (sesamoid bone) | triquetral | - | - |
| Distal | Trapezium | scaphoid | trapezoid | #1 and #2 |
| Distal | Trapezoid | scaphoid | trapezium, capitate | #2 |
| Distal | Capitate | scaphoid, lunate | trapezoid, hamate | #2, #3 and #4 |
| Distal | Hamate | triquetral, lunate | capitate | #4 and #5 |
Mnemonics
There exist several Mnemonics to remember these bones:[2]
★ 'S'ome 'L'overs 'T'ry 'P'ositions 'T'hat 'T'hey 'C'an't 'H'andle.
★ 'S'ally 'l'eft 't'he 'p'arty / 't'o 't'ake 'C'athy 'h'ome.
★ 'S'tudents 'L'ike 'T'he 'P'rofessor / 'T'o 'T'each 'C'omplex 'H'ypotheses
★ 'S'top 'L'etting 'T'hose 'P'eople / 'T'ouch 'T'he 'C'adaver's 'H'ands
★ 'S'neh 'L'ata 'T'inde 'P'aka / 'T'ere 'T'inde 'C'atchey 'H'ain (A Hindi version which is quite funny and hence popular among students in India, which can be roughly translated as an exhortation to a woman called Sneh Lata, asking her to properly cook a vegetable.)
★ 'S'low 'L'ane 'T'o 'P'reston / 'T'om 'T'humb 'C'an 'H'um
★ SeLoTaPe/aTTaCH(you remove all the vowels for this one to get the eight (8) consonants)
★ 'S'acred 'L'overs 'T'ry 'P'ositions 'T'hat 'T'hey 'C'annot 'H'andle.
★ 'S'he 'L'ikes 'T'o 'P'lay / 'T'ry 'T'o 'C'atch 'H'er
★ 'S'enior 'L'ecturers 'T'ake 'P'rostitutes 'T'o 'T'he 'C'althorpe 'H'otel
Common characteristics of the carpal bones
Each bone (excepting the pisiform) presents six (6) surfaces.
Of these the ''palmar'' or ''anterior'' and the ''dorsal'' or ''posterior surfaces'' are rough, for ligamentous attachment; the dorsal surfaces being the broader, except in the lunate.
The ''superior'' or ''proximal,'' and ''inferior'' or ''distal surfaces'' are articular, the superior generally convex, the inferior concave; the ''medial'' and ''lateral surfaces'' are also articular where they are in contact with contiguous bones, otherwise they are rough and tuberculated.
The structure in all is similar: cancellous tissue enclosed in a layer of compact bone.
See also
★ Bone terminology
★ Terms for anatomical location
★ Carpal tunnel
★ Carpal tunnel syndrome
Additional images
References
1. http://home.brisnet.org.au/~mccready/Swamp%20Wallaby.htm
2.
External links
★ - "Palm of the Hand: Carpal bones"
★
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