WordNet

come into the company of; "She joined him for a drink"
cause to become joined or linked; "join these two parts so that they fit together" (同)bring together
make contact or come together; "The two roads join here" (同)conjoin
become part of; become a member of a group or organization; "He joined the Communist Party as a young man" (同)fall_in, get together
united or combined; "a joint session of Congress"; "joint owners"
marijuana leaves rolled into a cigarette for smoking (同)marijuana cigarette, reefer, stick, spliff
a disreputable place of entertainment
junction by which parts or objects are joined together
(anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) (同)articulation, articulatio
provide with a joint; "the carpenter jointed two pieces of wood" (同)articulate
affecting or involving two or more; "joint income-tax return"; "joint ownership"
fasten with a joint
fit as if by joints; "The boards fit neatly"
involving both houses of a legislature; "a joint session of Congress"
separate (meat) at the joint
the act of bringing two things into contact (especially for communication); "the joining of hands around the table"; "there was a connection via the internet" (同)connection, connexion
having joints or jointed segments;

PrepTutorEJDIC

〈二つ以上のもの〉‘を'『つなぐ』,結合する《+『名』+『together』(『up』)》;(…に)…‘を'つなぐ《+『名』+『to』(『onto』)+『名』》 / (線などで)〈二つ以上のもの〉‘の'間を結ぶ(つなぐ)《+『名』+『by』(『with』)+『名』》 / (友情・結婚などで)〈人〉‘を'結びつける《+『名』+『in』+『名』》 / 〈川・道などが〉…‘と'いっしょになる,合流する / 〈会など〉‘に'『加入する』 / (…で)〈人〉‘の'『仲間に入る』,‘と'いっしょになる《+『名』〈人〉+『in』(『for』)+『名』,+『名』〈人〉+『in』do『ing』》 / (…に)『加わる』《+『in』+『名』〈事〉/+『in』『with』+『名』〈人〉》 / (人と…を)『ともにする』《+『with』+『名』〈人〉+『in』+『名』(doing)》 / 〈川・道などが〉『いっしょになる』,合流する / 接合箇所(点,面,線);継ぎ目
『関節』 / 『継ぎ目』,接合箇所,合わせ目 / 継ぎ目と継ぎ目の間の部分,節 / (二つの部分を継いだり支えたりするのに用いる)継ぎ手,ジョイント / (枝や葉の)つけ根,節 / (骨付きの)肉の大切り身 / 《俗》安酒場,とばく宿,アヘン窟(くつ) / 『共同の』,共有の;連帯の,連合の / 両院合同の;二院制議会の両院の / …‘を'継ぎ合わせる;…‘を'継ぎ目(関節)でつなぐ / …‘を'継ぎ目で分ける;〈鳥・肉など〉‘を'関節で切り分ける
継ぎ目のある;関節のある

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/02/17 01:33:45」(JST)

wiki en

The metacarpophalangeal joints (MCP) refer to the joints between the metacarpal bones and the phalanges of the fingers. That means the MCP joint is the knuckle between the hand and the finger. These are of the condyloid kind, formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the first phalanges, with the exception of that of the thumb, which is a ginglymus.

Structure

Ligaments

Metacarpophalangeal articulation and articulations of digit. Ulnar aspect.

Each joint has:

palmar ligaments of metacarpophalangeal articulations
collateral ligaments of metacarpophalangeal articulations

Dorsal surfaces

The dorsal surfaces of these joints are covered by the expansions of the Extensor tendons, together with some loose areolar tissue which connects the deep surfaces of the tendons to the bones.

Function

The movements which occur in these joints are flexion, extension, adduction, abduction, and circumduction; the movements of abduction and adduction are very limited, and cannot be performed while the fingers form a fist.^[1]

The muscles of flexion and extension are as follows:

Location	Flexion	Extension
fingers	Flexor digitorum superficialis and profundus, lumbricales, and interossei, assisted in the case of the little finger by the flexor digiti minimi brevis	extensor digitorum communis, extensor indicis proprius, and extensor digiti minimi muscle
thumb	flexor pollicis longus and brevis	extensor pollicis longus and brevis

Clinical significance

Arthritis of the MCP is a distinguishing feature of Rheumatoid Arthritis, as opposed to the distal interphalangeal joint in osteoarthritis.

Other animals

In many quadrupeds, particularly horses and other larger animals, the metacarpophalangeal joint is referred to as the "fetlock." This term is translated literally as "foot-lock." In fact, although the term fetlock does not specifically apply to other species' metacarpophalangeal joints (for instance, humans), the "second" or "mid-finger" knuckle of the human hand does anatomically correspond to the fetlock on larger quadrupeds. For lack of a better term, the shortened name may seem more practical.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Gray's Anatomy (1918), see infobox

External links

Hand kinesiology at the University of Kansas Medical Center
EatonHand joi-047

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. History and examination of the adult with hand pain
2. Digit dislocation reduction
3. 母指痛患者の評価 evaluation of the patient with thumb pain
4. ばね指（狭窄性屈筋腱腱鞘炎） trigger finger stenosing flexor tenosynovitis
5. 手指の解剖学 finger and thumb anatomy

English Journal

The structural basis of MRI bone erosions: an assessment by microCT.

Albrecht A, Finzel S, Englbrecht M, Rech J, Hueber A, Schlechtweg P, Uder M, Schett G.SourceDepartment of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Annals of the rheumatic diseases.Ann Rheum Dis.2013 Aug;72(8):1351-7. doi: 10.1136/annrheumdis-2012-201982. Epub 2012 Sep 19.
OBJECTIVE: To determine whether erosions appearing in MRI in patients with rheumatoid arthritis (RA) represent true erosions.METHODS: 50 RA patients received 1.5 T MRI and microCT (μCT) of the dominant hand. Erosion counts were assessed in coronal T1 weighted MRI sections and in coronal as well as
PMID 22993229

Quantitative In Vivo HR-pQCT Imaging of 3D Wrist and Metacarpophalangeal Joint Space Width in Rheumatoid Arthritis.

Burghardt AJ, Lee CH, Kuo D, Majumdar S, Imboden JB, Link TM, Li X.SourceMusculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, QB3 Building, Suite 203, 1700 4th St, San Francisco, CA, 94158, USA, andrew.burghardt@ucsf.edu.
Annals of biomedical engineering.Ann Biomed Eng.2013 Jul 26. [Epub ahead of print]
In this technique development study, high-resolution peripheral quantitative computed tomography (HR-pQCT) was applied to non-invasively image and quantify 3D joint space morphology of the wrist and metacarpophalangeal (MCP) joints of patients with rheumatoid arthritis (RA). HR-pQCT imaging (82 μm
PMID 23887879

[Abductor digiti minimi muscle flap for defect coverage of the hand.]

Stang F, Siemers F, von Wild T, Weyers I, Mailänder P, Stollwerck P.SourceKlinik für Plastische Chirurgie, Handchirurgie, Intensiveinheit für Schwerbrandverletzte, Universitätsklinik Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland, felix.stang@gmx.de.
Operative Orthopadie und Traumatologie.Oper Orthop Traumatol.2013 Jul 26. [Epub ahead of print]
OBJECTIVE: Defect coverage of the ulnar aspect of the hand, wrist and hypothenar with an abductor digiti minimi muscle flap and split skin graft.INDICATIONS: Soft tissue defects of the ulnar aspect of the hand, wrist and hypothenar. Osteomyelitis of the fifth metacarpal bone.CONTRAINDICATIONS: Large
PMID 23884435

Japanese Journal

整形手術手技 27年経過した中手指節関節への血管柄付き半関節移植術

森谷浩治,吉津孝衛,牧裕 [他]
整形外科 62(6), 559-563, 2011-06
NAID 40018849199

臨床室母指中手指節関節90°屈曲位ロッキングの1例

志村治彦,太田剛,松山嘉彦 [他]
整形外科 62(5), 439-441, 2011-05
NAID 40018815590

Related Pictures

★リンクテーブル★

リンク元	「MCP」「MP関節」「中手指節関節」
関連記事	「join」「joint」「metacarpophalangeal」

「MCP」

Metacarpophalangeal joint
	The palmar aspect of the hand showing the epiphyses of the hand exploded. MCP joints in red.
	Metacarpophalangeal articulation and articulations of digit. Palmar aspect.
Details
System	099
Identifiers
Latin	articulationes metacarpophalangeae
MeSH	A02.835.583.345.512
Dorlands; /Elsevier	a_64/12161410
TA	A03.5.11.501
FMA	71364
	Anatomical terminology [edit on Wikidata]