<prompt> All of the following are associated with proximal muscle weakness EXCEPT: -Spinomuscular atrophyDuchenis muscular dystrophyPolymyositisMyotonic dystrophy  <response>: Ans. is d is myotonic dystrophy The general rule in that:Myopathies have proximal muscle weakness.neuropathies have distal muscle weakness.Myotonic dystrophy is an exception to this general rule and mainly involves the distal muscles. 