<prompt> Thyrotoxic myopathy affects ?Muscles of the neckProximal limb musclesDistal limb musclesMuscles of the tongue  <response>: Thyrotoxic myopathy affects proximal limb muscles i.e. the front thigh muscles, arm muscles. Weakness is more when muscle contracts isometrically either while getting down steps or lifting a full bucket. Once hypehyroidism is controlled, recovery occurs. Reference : page 473 SRBs manual of surgery 5th edition 