Articulations of the Digits: Hand – Interphalangeal Joints

(Articulationes Digitorum Manus; Interphalangeal Joints) The interphalangeal articulations are hinge-joints; each has a volar and two collateral ligaments. The arrangement of these ligaments is similar to those in the metacarpophalangeal articulations. The Extensor...

The Shoulder Complex

One of the factor that contributes to the variety of movement the hand can perform “around” the body is the huge mobility of the shoulder. What we generically identify as shoulder movements are separate in 2 different “sectors” and involve 4 joints (3 anatomical...

Types of Body Movements

Synovial joints allow the body a tremendous range of movements. Each movement at a synovial joint results from the contraction or relaxation of the muscles that are attached to the bones on either side of the articulation. The type of movement that can be produced at...

Synovial Joints

Synovial joints are the most common type of joint in the body (Picture 1). A key structural characteristic for a synovial joint that is not seen at fibrous or cartilaginous joints is the presence of a joint cavity. This fluid-filled space is the site at which the...