Localizing peroneal nerve lesions to the knee by motor conduction studies
J. B. Pickett
We studied peroneal motor conduction in 186 normal patients (206 nerves)
and in 36 patients with 38 peroneal nerve lesions localized to the knee by
electromyography. The efficiency of the test, or percentage of times the
test results were true, was used to find the optimal point to separate the
normal patients from patients with peroneal nerve lesions at the knee. This
analysis revealed that the best indicator for localizing a peroneal nerve
lesion to the knee was a greater than 20% drop in peroneal motor amplitude
across the knee. This gave a calculated efficiency of 99.52% and detected
60% to 70% of peroneal nerve lesions at the knee.
