<prompt> Weakness of extensor Hallucis longus is due to which nerve root mainly?L5L4S1S2  <response>: Ans. is a i.e., L5 Important muscles and their chief myotomesMuscleMyotomeExtensor Hallucis LongusL5Tibialis anteriorL4Flexor Hallucis LongusS1GastrosoleusS1Gluteus Medius and MinimusL5Gluteus MaximusS1Quadriceps FemorisL3 