Glenoidal

Glenoidal lateral sinus

The glenoid is a saddle-shaped protrusion formed by the coracoid eminence on the glenoid cavity of the scapula. The glenoid foramina are holes in the bone that form the glenoid fossa between the socket of the scapula and the head of the humerus.

In the elbow joint, the glenoid foramen is also known as the cubital tunnel or ulnar anatomic. It opens into the wrist through the intracatheptor opening. At the wrist joint it becomes known as the carpal groove (or Kryukov's groove). According to one version, the translation of the Latin phrase “glenoidale” implies the concept “saddle-shaped”.

Its axial width is 4-5 mm, length up to 8 mm. The glenoid is elliptical in shape and gradually widens posteriorly and inferiorly. Anteriorly, the bone forms a small elevation - the neck of the scapula, on which the muscles of the capsule are fixed. There are two processes on the glenoid - posterior and anterior - which in their shape represent ridges. The posterior one has the shape of a truncated cone, the anterior one is flattened along and pointed. Between them, along the outer and lower part of the glenoid bone, there are two glenosphenoid sections - the angles of Glogoll, or transverse protrusions.

The glenoids have two sides: a concave, inward-facing lateral side (this side is often called the apex), and a convex, outward-facing medial side. The crest of the lesser tuberosity is clearly visible on the surface of the medial surface.

Next to the ridge is the scapular plate - a place for fixation of the rotator cuff muscles (and when stretched, a “bone bed for the tendon” of the deltoid muscle can be found). Also on