Which conditions should be included in the differential diagnosis of obturator nerve entrapment?

Updated: Oct 15, 2019
  • Author: Minoo Hadjari Hollis, MD; Chief Editor: Thomas M DeBerardino, MD  more...
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Answer

With severe injuries to the obturator nerve, loss of adduction and internal rotation occur, and the typical gait pattern is that of an externally rotated foot. Examination reveals wasting of the adductor muscles of the thigh and, possibly, diminished sensation along the medial thigh distally.

The differential diagnosis includes adductor muscle strain, osteitis pubis, stress fracture of the pelvis, inguinal ligament enthesopathy, entrapment of the lateral femoral cutaneous nerve, and inguinal hernia. A nerve block may be helpful but usually is not necessary for diagnosis.


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