Combo Gratuito - COVID-19

Temos o compromisso com a educação, por isso estamos liberando o material rico sobre o Sistema Cardiovascular, contendo Apostila, Banco de Questões e Palavras cruzadas. Receba AGORA no seu e-mail.

FIST

The wrist joint is formed by the distal radioulnar and radiocarpal joints.

The distal radius-ulnar joint is a trocoid joint formed between the ulna head and the ulnar notch of the lower extremity of the radius. It is joined by the joint capsule and the joint disc.

Articular Capsule & #8211; It consists of bundles of fibers inserted into the margins of the ulnar notch and the head of the ulna. It has two thicknesses called Radioulnar Ventral Ligament and Dorsal Radioulnar Ligament.

Articular Disc & #8211; It is triangular in shape and is placed transversely under the head of the ulna, firmly joining the lower extremities of the ulna and radius.

The radiocarpal joint (syndesmosis) is a condylar junction. It is formed by the distal end of the radius and the distal face of the articular disc with the scaphoid, semilunar and pyramidal bones. The radiocarpal joint is formed by the following ligaments:

Palmar Radiocarpal Ligament & #8211; It is a broad membrane bundle inserted into the anterior margin of the distal end of the radius, its styloid process, and the palmar surface of the distal end of the ulna. Its fibers are directed distally to insert into the scaphoid, semilunar and pyramidal bones.

Dorsal Radiocarpal Ligament & #8211; It is less thick and resistant than the palm. Its proximal insertion is at the posterior edge of the distal end of the radius. Its fibers are directed obliquely distally and ulnarly and attach to the scaphoid, semilunar and pyramidal bones.

Ulnar Collateral Ligament & #8211; It is a rounded cord inserted proximally at the end of the ulnar styloid process and distally into the pyramidal and pisiform bones.

Radial Collateral Ligament & #8211; It extends from the apex of the styloid process of the radius to the radial side of the scaphoid.

Distally to the joints studied above, we also find the intercarpal, carpometacarpal, intermetacarpal, metacarpophalangeal and interphalangeal joints.

BACK VIEW OF THE HAND JOINT STRUCTURES
 Dorsal View of Handle Joint Structures
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.
PALMAR VIEW OF THE HAND FRAMES
 Palmar View of Articular Wrist Structures
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

 

SEE MORE

Synovial Joints
ATM
Spine
Shoulder
Elbow
Hip
knee
Ankle