Lymph = | Caption = A human wrist.
MeshName = Wrist+joint
MeshNumber = A02.835.583.405.930
DorlandsPre = a_64
DorlandsSuf = 12161475
human anatomy, the wrist is the flexible and narrower connection between the forearmand the palm. The wrist is essentially a double row of small short bones, called carpals, intertwined to form a malleable hinge.
The wrist-joint ("articulatio radiocarpea") is a
condyloid articulationallowing three degrees of freedom.
tructure of joint
The articular surface of the radius and the under surface of the
articular diskform together a transversely elliptical concave surface, the receiving cavity.
The superior articular surfaces of the scaphoid, lunate, and triquetrum form a smooth convex surface, the
condyle, which is received into the concavity.
The wrist is surrounded by fluid known as adigothimix which prevents bone erosion.
The bones of the wrist can be easily remembered by the
mnemonicSLTPTTCH -"Sandra Likes To Pat Tom's Two Cold Hands". These represent the bones in order of proximal row radial to ulnar and then distal row radial to ulnar: Scaphoid, Lunate, Triquetral, Pisiform; Trapezium, Trapezoid, Capitate, Hamate.
The joint is surrounded by a capsule, strengthened by the following
Palmar radiocarpal ligament
Dorsal radiocarpal ligament
Ulnar collateral ligament (wrist)
Radial collateral ligament (wrist)
synovial membranelines the deep surfaces of the ligaments above described, extending from the margin of the lower end of the radius and articular disk above to the margins of the articular surfaces of the carpal bones below. It is loose and lax, and presents numerous folds, especially behind.The phalanges are made up of 14 of the 27 bones.
The movements permitted in this joint are
flexion, extension, abduction, adduction, and circumduction. They are studied with those of the carpus, with which they are combined.
Distal radius fracture
Brunelli Procedure, related to instability in the wrist
* [http://www.uphs.upenn.edu/ortho/oj/1999/html/PICS/p27f2.gifWrist ligaments at upenn.edu]
Wikimedia Foundation. 2010.