DIFFERENCES BETWEEN EXTRA-MEDULLARY VS INTRA- MEDULLARY SPINAL CORD LESIONS 

YES YES thank u ..

Sure bhargav. Will be upoloading more.

violin maniac Tank u

Kindly post if you have found any explanation for your question

Corticospinal tracts(UMN) are located at the periphery of the spinal cord and extramedullary lesions would easily compress these earlier in onset of disease whereas a glioma/ependymoma/syrinx would take more time to encroach on it being intramedullary

Moreover in intramedullary lesion it would expand from centre of cord and involve the anterior horn cell causing LMN lesion n fasciculations.. hard to imagine without a diagram but very roughly, extramedullary = compressing from outside and intramedullary = growing from the centre of cord circumferentially outwards (generally)

sweety yadav yes you are correct

Sure.. It's seen in extradural spinal lesions of high cervical cord. Here one upperlimb is first involved followed by ipsilateral Lower limb,then contralateral lowerlimb and finally the opposite upperlimb in a U shaped manner..

@@conceptualmedicinebydrprat9586 thanks sir. Pathogenesis sir..

@@supriyahaha We will shortly upload a video on that.

@@conceptualmedicinebydrprat9586 awaiting your video sir. Thanks a lot.

Disuse atrophy can occur in lmn lesions