 Why are we so bothered about the internal capsule and the corticospinal tract? Again, this is just the same picture which I had shown earlier and I have put a quick tabular representation of some lacuna stroke syndrome involving the posterior capsule involving the internal capsule. We have something called pure motor stroke or pure motor hemiparesis where the location of lesion can either be in the corona radiata which I had shown earlier. It can be in the internal capsule or it can be in the basilar part of the pons or it can be the medial medulla. All of them produce opposite side, face, arm and leg paralysis, pure motor. Then we have another syndrome. Mind you, this is just a few of them. There are some 25 different lacuna stroke syndromes described. Another one is called the dysarthria clumsy hand syndrome where the location of lesion is in the genu and the anterior part of the posterior limb. Therefore, the patient presents with one sided C-7-9-10-12 upper motor neuron cranial palsy and weakness of the arm. We had said that the corticospinal tract fibers to the upper limb are located here. The dysarthria clumsy hand syndrome, the location of stroke is here. Then we have another entity called the ataxic hemiparesis where the location of lesion is in the posterior part of the posterior limb of the internal capsule. Here, the patient presents with again opposite side weakness where the lower limbs are more weak than the upper limbs. That is why it is referred to as ataxic hemiparesis. There are just a few of the strokes and roams involving the posterior limb of the internal capsule. This concludes our discussion of the projection fibers, the coronary adiata, the internal capsule and the clinical correlations of the posterior limb of the internal capsule, specifically pertaining to the corticobulbar and the corticospinal tracts. However, remember that there are many other...