Conus lesion characterised by ?
Ans: c (toss of anal reflex) ref: Davidson 21 page no:268 .Harrison 17 pg 2589Conus medullaris is the tapered caudal termination of the spinal cord) comprising the lower sacral and single coccygeal segments. In this syndrome pathology is limited to the parenchyma of the terminal spinal cord. A conus lesion is intramedullary, a cauda equina lesion extramedul-lary. Some processes may involve both structures, and it is not always possible to make a clear clinical distinction, as many of the manifestations are similar.Lesion in conus medullaris causes -consisting of bilateral saddle anesthesia (S3-S5) prominent bladder and bowel dysfunction (urinary retention and incontinence with lax anal tone) mpotence. bulbocavemosus (S2-S4) and anal (S4-S5) reflexes are absent Muscle strength normal or mild) symmetric lower-extremity motor involvement relative lack of painCauda equina - cluster of nerve roots derived from the lower cord is involvedFeatures are low back and radicular pain, asymmetric leg weakness and sensory loss, variable areflexia in the lower extremities and relative sparing of bowel and bladder function.I am not sure but I will go for absent anal reflex
early loss of ankle jerk
rectal pain
loss of anal reflex
loss of potency
C.N.S.