The Radio-Carpal (Wrist) Joint Flashcards
Classification of the radiocarpal joint.
Synovial ellipsoid joint.
Articulation in the radiocarpal joint occurs between…
The distal surfaces of the radius & articular disc and the scaphoid, lunate and triquetral of the proximal row of the carpal bones.
Name & describe the articular surfaces of the radiocarpal joint.
Distal surface of the Radius and the Articular Disc - concave ellipsoid surface
scaphoid, Lunate and Triquetral - Convex surface
Describe the joint capsule of the radiocarpal joint.
Attaches proximally to the anterior and posterior edges of the radius and ulna.
Attaches laterally & medially to the radial and ulnar styloid processes.
Attaches distally to the anterior and posterior margins of the articular surfaces of the carpal bones and blends with the collateral ligaments.
Name the capsular ligaments of the radiocarpal joint.
Dorsal radiocarpal ligament
Palmar Radiocarpal ligament
Palmar Ulnocarpal ligament
Radial collateral carpal ligament
Ulnar collateral carpal ligament.
Dorsal Radiocarpal Ligament origin
Posterior edge of the lower end of the radius.
Dorsal Radiocarpal Ligament insertion
Posterior surface of the scaphoid lunate and triquetral.
How does the Dorsal Radiocarpal Ligament limit movement?
Limits flexion
Palmar Radiocarpal Ligament origin
Anterior edge of lower end of radius and styloid process.
Palmar Radiocarpal Ligament insertion
Anterior surface of the scaphoid lunate and triquetral.
How does the Palmar Radiocarpal Ligament limit movement?
Limits extension
Palmar Ulnocarpal Ligament origin
Anterior edge of articular disc and ulnar styliod process.
Palmar Ulnocarpal Ligament insertion
Anterior surface of scaphoid, lunate and triquetral
How does the Palmar Ulnocarpal Ligament limit movement?
Limits extension
Radial Collateral Carpal Ligament origin
Tip of radial styloid process
