ana q4 - genius123

[ArchivalUser]

A 31 yr old man presents to ER complaining of pain in ant part of his left leg while backpacking the day before.Further exam reveals that pt has severe weakness when attempting to dorsiflex his toes on affected side.plantar flexion of toes apparently unaffected.Which of the following is most likely cause?

A.Compression of deep peroneal nerve
B.Compression of femoral nerve
C.Compression of tibial nerve
D.Partial occlusion of obturator artery
E.Partial occlusion of post tibial artery

[ArchivalUser]

aa

[ArchivalUser]

AA

[ArchivalUser]

a

[ArchivalUser]

a/

[ArchivalUser]

A.Compression of deep peroneal nerve

[ArchivalUser]

ANS=A
Patient has anterior compartment syndrome,resulting from fluid accumulation in ant fascial compartment of leg.The increased pressure results in compression of muscles,bld vessels and nerves.Major nerves coursing are deep peroneal nerve and superficial peroneal nerve(proximal part).Deep peroneal nerve innervate extensor digitorum longus,which extends all toes except big toe.