Radiocarpal Joint

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This document was created by Alex Yartsev ([email protected]); if I have used your data or images and forgot to reference you, please email me. Radiocarpal joint Type of joint Condyloid (ellipsoid) type of synovial joint Articulating surfaces Three of the carpal bones (scaphoid, triquetrum and Radial collateral ligament lunate) articulate with the radius Ulnarl collateral The pisiform and the ulna don’t participate ligament Articular capsule Stretches from the distal ends of the radius and ulna, to the proximal row of carpal bones (but not the pisiform) Ligaments Articular disc The PALMAR radiocarpal ligaments stretch from the radius to both of the two rows of carpal bones; The DORSAL radiocarpal ligament does the same these ligaments make sure the hand follows the radius in its rotation the ULNAR COLLATERAL LIGAMENT passes from the ulnar styloid to the triquetrum the RADIAL COLLATERAL LIGAMENT passes from the radial styloid to the triquetrum Stability factors The radius articulates tightly with the carpus; the styloid processes of the radius and ulna limit abduction and adduction The ligaments and tendons supply most of the stability Movements Dorsal radiocarpall ligament Palmar radiocarpal ligament The movements of this joint are augmented by the slight movements permitted by the intercarpal and midcarpal joints. These are flexion + extension (greater range of flexion than extension) flexion is produced by FCR and FCU, Palmaris longus APL, Flexors of the fingers and thumb extension is produced by ECRL, ECRB, and ECU Extensors of fingers and thumb adduction + abduction (ulnar and radial deviation) – greater range of adduction(ulnar) than of abduction, because of the larger radial styloid. Most abduction occurs at the midcarpal joint. Adduction is produced by Simultaneous ECU and FCU action Abduction is produced by APL, FCR, ECRL and ECRB together Circumduction – consists of successive flexion, adduction, extension and abduction Blood supply: Branches of the dorsal and palmar carpal arch Nerve supply: Anterior interosseous branch of the median nerve, posterior interossous branch of the radial nerve, and dorsal and deep branches of the ulnar nerve .

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REVIEW ARTICLE Osteoarthritis of the Wrist
REVIEW ARTICLE Osteoarthritis of the Wrist Krista E. Weiss, Craig M. Rodner, MD From Harvard College, Cambridge, MA and Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT. Osteoarthritis of the wrist is one of the most common conditions encountered by hand surgeons. It may result from a nonunited or malunited fracture of the scaphoid or distal radius; disruption of the intercarpal, radiocarpal, radioulnar, or ulnocarpal ligaments; avascular necrosis of the carpus; or a developmental abnormality. Whatever the cause, subsequent abnormal joint loading produces a spectrum of symptoms, from mild swelling to considerable pain and limitations of motion as the involved joints degenerate. A meticulous clinical and radiographic evaluation is required so that the pain-generating articulation(s) can be identi- ﬁed and eliminated. This article reviews common causes of wrist osteoarthritis and their surgical treatment alternatives. (J Hand Surg 2007;32A:725–746. Copyright © 2007 by the American Society for Surgery of the Hand.) Key words: Wrist, osteoarthritis, arthrodesis, carpectomy, SLAC. here are several different causes, both idio- of events is analogous to SLAC wrist and has pathic and traumatic, of wrist osteoarthritis. been termed scaphoid nonunion advanced collapse Untreated cases of idiopathic carpal avascular (SNAC). Wrist osteoarthritis can also occur second- T 1 2 necrosis, as in Kienböck’s or Preiser’s disease, may ary to an intra-articular fracture of the distal radius or result in radiocarpal arthritis. Congenital wrist abnor- ulna or from an extra-articular fracture resulting in malities, such as Madelung’s deformity,3,4 can lead malunion and abnormal joint loading.
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Color Atlas of Human Anatomy Vol. 1: Locomotor System Bearbeitet von Werner Platzer 6. durchges. Auflage 2008. Buch. ca. 480 S. ISBN 978 3 13 533306 9 Zu Inhaltsverzeichnis schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. 130 Upper Limb: Bones, Ligaments, Joints Radiocarpal and Midcarpal Joints Ligaments in the Region of the Wrist (A–E) (A–E) Four groups of ligaments can be distin- The radiocarpal or wrist joint is an ellip- guished: soid joint formed on one side by the radius (1) and the articular disk (2) and on the Ligaments which unite the forearm bones with other by the proximal row of carpal bones.Not the carpal bones (violet). These include the all the carpal bones of the proximal row are ulnar collateral ligament (8), the radial col- in continual contact with the socket- lateral ligament (9), the palmar radiocarpal shaped articular facet of the radius and the ligament (10), the dorsal radiocarpal liga- disk. The triquetrum (3), only makes close ment (11), and the palmar ulnocarpal liga- contact with the disk during ulnar abduc- ment (12). tion and loses contact on radial abduction. Ligaments which unite the carpal bones with The capsule of the wrist joint is lax, dorsally one another,orintercarpal ligaments (red). These comprise the radiate carpal ligament Upper Limb relatively thin, and is reinforced by numer- ous ligaments.
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