Snapshot A 27-year-old woman gives birth to a healthy baby boy. She had an uncomplicated vaginal delivery and was placed in obstetric stirrups during the delivery. Soon after the birth, she complains of numbness and weakness in her right foot. On exam, she has decreased sensation to light touch along the dorsum of her foot including in the first webspace. Ankle dorsiflexion is 3/5 and ankle plantarflexion is 5/5. She walks with a steppage gait. (A compression neuropathy of the common peroneal nerve) Overview Introduction Clinically relevant nerves to the lower extremity login to view 23 more bullets Obturator Nerve (L2-L4) Motor innervation login to view 3 more bullets Sensory innervation login to view 1 more bullet Terminal branches login to view 1 more bullet Injury login to view 7 more bullets Femoral Nerve (L2-L4) Motor innervation login to view 8 more bullets Sensory innervation login to view 2 more bullets Terminal branches login to view 1 more bullet Injury login to view 13 more bullets Sciatic Nerve (L4-S3) Motor innervation login to view 5 more bullets Sensory innervation login to view 4 more bullets Terminal branches login to view 2 more bullets Injury login to view 13 more bullets Common Peroneal Nerve (L4-S2) Motor innervation login to view 2 more bullets Sensory innervation login to view 3 more bullets Terminal branches login to view 2 more bullets Injury login to view 15 more bullets Deep Peroneal Nerve (L4-L5) Motor innervation login to view 5 more bullets Sensory innervation login to view 1 more bullet Terminal branches login to view 1 more bullet Injury login to view 12 more bullets Superficial Peroneal Nerve (L4-S1) Motor innervation login to view 2 more bullets Sensory innervation login to view 2 more bullets Terminal branches login to view 1 more bullet Injury login to view 8 more bullets Tibial Nerve (L4-S3) Motor innervation login to view 7 more bullets Sensory innervation login to view 2 more bullets Terminal branches login to view 1 more bullet Injury login to view 10 more bullets Superior Gluteal Nerve (L4-S1) Motor innervation login to view 3 more bullets Sensory innervation login to view 1 more bullet Terminal branches login to view 1 more bullet Injury login to view 32 more bullets Trendelenburg test login to view 3 more bullets Trendelenburg gait login to view 1 more bullet Inferior Gluteal Nerve (L5-S2) Motor innervation login to view 2 more bullets Sensory innervation login to view 1 more bullet Terminal branches login to view 1 more bullet Injury login to view 8 more bullets Lateral Femoral Cutaneous Nerve (L2-L3) Motor innervation login to view 1 more bullet Sensory innervation login to view 1 more bullet Terminal branches login to view 1 more bullet Injury login to view 9 more bullets Sensory Innervation to the Foot The foot has multiple nerves carrying sensory input Identifying areas of sensory loss can aid in the localization of specific nerve lesions Localization login to view 15 more bullets