#disability_of_walking  a disability that interferes with or prevents walking
  supertype:  disability__disablement__handicap__impairment  the condition of being unable to perform as a consequence of physical or mental unfitness; "reading disability"; "hearing impairment"
  subtype:  abasia  inability to walk
     subtype:  abasia_trepidans  abasia due to trembling of the legs
     subtype:  atactic_abasia__atacticabasia__ataxic_abasia  abasia due to ataxia of the legs
     subtype:  choreic_abasia__choreicabasia  abasia related to abnormal movements of the legs
     subtype:  paralytic_abasia__paralyticabasia  abasia related to paralysis of the leg muscles
     subtype:  paroxysmal_trepidant_abasia  abasia related to spasticity of the legs
     subtype:  spastic_abasia__spasticabasia  abasia due to spastic contractions of the leg muscles
  subtype:  lameness__limping__gimp__gimpiness__gimpines__gamenes__claudication  disability of walking due to crippling of the legs or feet
     subtype:  intermittent_claudication  lameness due to pain in leg muscles because the blood supply is inadequate; pain subsides with rest

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