What Is Commissural Fusion?

Commissural fusion is the main mechanism of rheumatic MS. Associated lesions are chordal shortening and fusion, and leaflet thickening. Mobility of the posterior valve is almost always reduced whereas mobility of the anterior valve is often preserved.

What is Commissural fibers?

Commissural fibers connect an area in one hemisphere with an area in the opposite hemisphere. ... The anterior and posterior commissures are other small bundles of interhemispheric fibers, located anteriorly and posteriorly to the corpus callosum.

What does commissure mean?

1 : a point or line of union or junction especially between two anatomical parts (such as adjacent heart valves) 2 : a connecting band of nerve tissue in the brain or spinal cord.