Presentation on theme: "Wrist and Hand Conditions Chapter 13. Wrist Articulations Radiocarpal: Radius with the Scaphoid, Lunate, Triquetrum. Intercarpal Distal Radioulnar Triangular."— Presentation transcript:
Wrist and Hand Conditions Chapter 13
Wrist Articulations Radiocarpal: Radius with the Scaphoid, Lunate, Triquetrum. Intercarpal Distal Radioulnar Triangular Fibro cartilage Complex stabilizes the Radioulnar joint.
Carpometacarpal and Intermetacarpal Joints CM of the thumb is a saddle joint CM of the four fingers gliding joints IM reinforced by joint capsules comprised of the dorsal, volar, and two interosseous CM ligaments
Metacarpophalangeal Joints Rounded distal heads of the metacarpals articulate with the concave proximal ends of the phalanges Reinforced by strong collateral ligaments
Interphalangeal Joints The Proximal (PIP), Distal (DIP), and the IP joint of the thumb are all hinge joints The articular capsule made up of volar and collateral ligaments surround each IP joint
Muscles Retinacula of the Wrist: The fascial tissue surrounding the wrist thickened into strong fibrous bands called retinacula that form protective passageways through which tendons, nerves, and blood vessels pass. Tendon Sheaths: Sealed at both ends containing synovial fluid, annular pulleys that prevent tendon bowstringing with flexion.