What is " saddle anasthesia" ?.

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CONCLUSION: Saddle anesthesia describes the sensory loss in the perianal region( saddle ) that results from lesions involving the S1 and S2 segment of the spinal cord.It may be accompanied by sensory loss in the medial aspects of the calf and posterior aspect of the thigh.Symmetric saddle anesthesia may result from lesions in the conus medullaris.