A 4-year old child c/o inability to walk which was first noticed about two months back and worsened gradually. There is no history of fever or injury. There is a history of stress incontinence. On examination child has paraplegia and the anus is patulous. Reflexes are diminished and planters are flexor. There is loss of sensation below umbilicus. The segmental level of lesion is:
High-Yield Explanation
The main clue in this question is "loss of sensation below the umbilicus". This means that umbilicus is spared which is supplied by T10 segment. Hence the lesion lies below T10 Le. T12 in this case. If there was loss of sensation in umbilicus also then the answer would have been T10.