Eleven of 28 patients with a fracture of the acetabulum, pelvis, or sacrum were found to have electromyographic changes, apparently due to injury to the lumbosacral plexus. There appears to be a higher incidence associated with sacral fracture or sacroiliac separation (64%) than with acetabular fracture (24%). The EMG changes are diffuse and the clinical manifestations are subtle but the changes do interfere with the rehabilitation process.
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Edmund B. Weis (1984) studied this question.
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