What is the role of spinal stenosis in the etiology of foot drop?

Updated: Mar 23, 2020
  • Author: James W Pritchett, MD; Chief Editor: Vinod K Panchbhavi, MD, FACS  more...
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Answer

A series of patients who developed foot drop after primary hip arthroplasty were carefully examined and found to have spinal stenosis. [3] As many as 70% of patients undergoing hip arthroplasty have electromyographic (EMG) evidence of nerve injury, but they rarely have clinical symptoms. [4] Patients with preexisting spinal stenosis are believed to be at increased risk for foot drop after hip arthroplasty because of this proximal compromise; this is the double-crush phenomenon.


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