. Cunningham's Text-book of anatomy. Anatomy. CAEPAL JOINTS. 331 volar. They form a thin, loosely arranged stratum, in which the only noteworthy bands are one which joins the navicular to the capitate, and another which joins the triquetral to the os hamatum. Lig. Collaterale Carpi Radiale.—The radial collateral carpal ligament ( external lateral) (Fig. 310) extends between contiguous rough areas on the lateral aspects of the navicular and greater multangular bone. By its margins it is con- tinuous both with the volar and dorsal ligaments. Lig. Collaterale Carpi Ulnare.—The ulnar collatera
. Cunningham's Text-book of anatomy. Anatomy. CAEPAL JOINTS. 331 volar. They form a thin, loosely arranged stratum, in which the only noteworthy bands are one which joins the navicular to the capitate, and another which joins the triquetral to the os hamatum. Lig. Collaterale Carpi Radiale.—The radial collateral carpal ligament ( external lateral) (Fig. 310) extends between contiguous rough areas on the lateral aspects of the navicular and greater multangular bone. By its margins it is con- tinuous both with the volar and dorsal ligaments. Lig. Collaterale Carpi Ulnare.—The ulnar collateral carpal ligament ( internal lateral) (Fig. 310) is arranged like the former in regard to its margins, and by its ends it is attached to the contiguous rough ulnar surfaces of the triquetral and the os hamatum. Both of these collateral ligaments are directly continuous with the correspond- ing collateral ligaments of the radio-carpal joint. A lig. interosseum (interosseous ligament) (Fig. 311) is occasionally found within the capsule, extending across the joint cavity between the capitate and the navicular. Articulatio Ossis Pisiformis.—The pisi-triquetral articulation is an arthrodial diarthrosis. The mutual articular surfaces of the two bones are flattened and circular, and permit of only a small amount of gliding movement. The joint is provided with a thin but complete articular capsule, the fibrous stratum of which is specially strengthened distally by two strong bands, viz., Kg. piso- hamatum and lig. pisometacarpeum (Fig. 310). Both of these bands extend from the distal and medial aspect of the pisiform to adjoining parts of the hook of the os hamatum and base of the fifth metacarpal bone respectively. To a great extent these ligamentous bands may be regarded as extensions of the insertion of the tendon of the flexor carpi ulnaris muscle, which is attached to the proximal part of the pisiform bone. Looked at as ligaments, however, they are specially strong to pr
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
