What is finger fractionation?

What is finger fractionation?

Assessment of fractionation is most common at the fingers, where patients are asked to touch the tip of the thumb to the tip of each of the other fingertips. Loss of fractionated movement also occurs at more proximal segments such as when asking a patient to flex the shoulder alone.

What is Rubrospinal pathway?

The rubrospinal tract is a descending motor pathway that originates in the red nucleus, located on each side of the midbrain tegmentum at the level of superior colliculi. Their axons immediately cross the midline and descend through the pons and medulla oblongata to enter the lateral funiculus of the spinal cord.

What does the Olivospinal tract do?

The corticospinal tract controls primary motor activity for the somatic motor system from the neck to the feet. It is the major spinal pathway involved in voluntary movements. The tract begins in the primary motor cortex, where the soma of pyramidal neurons are located within cortical layer V.

Which tract does not decussate?

In contrast to the fibers for the lateral corticospinal tract, the fibers for the anterior corticospinal tract do not decussate at the level of the medulla oblongata, although they do cross over in the spinal level they innervate.

What is fractionated movement deficit?

DIAGNOSIS: FRACTIONATED MOVEMENT DEFICIT The primary movement dysfunction is the inability to fractionate movement associated with moderate or greater hyperexcitability. May describe the upper or lower extremity or both. Always associated with central neurological deficit.

What is corticospinal tract?

The corticospinal tract, AKA, the pyramidal tract, is the major neuronal pathway providing voluntary motor function. This tract connects the cortex to the spinal cord to enable movement of the distal extremities.

What is the corticospinal tract?

What is uncoordinated movement?

Uncoordinated movement is due to a muscle control problem that causes an inability to coordinate movements. It leads to a jerky, unsteady, to-and-fro motion of the middle of the body (trunk) and an unsteady gait (walking style). It can also affect the limbs. The medical name of this condition is ataxia.