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Join us as we count down to 2021 with a SANS question every day this month. Test your knowledge and learn something new each day as you participate. Questions will be posted to Twitter daily.
Far lateral (or zone 3) disc herniation at L4-5 would most likely affect function in which muscle?
quadriceps femoris is the correct answer. Far lateral disc herniation at L4-5 is most likely to affect function of the quadriceps. Far lateral or zone 3 lumbar disc herniation will most often affect the exiting nerve root at the pathologic level. At L4-5 this will be the L4 nerve root.
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