Motor Neuropathy/Motor Neuron Abiotrophy/Spinal Muscular Atrophy
Motor neuropathies are characterized by degeneration of cell bodies of motor neurons, ventral horn of the spinal cord, or the cranial nerve nuclei. This causes muscle atrophy and effector organ dysfunction resulting in associated clinical signs.
Age of Onset: 4 weeks of age
Sex Predisposition: Any sex of animal can be affected
Clinical Course:
Clinical signs may worsen over time and either remain stable for a period of time or continue to worsen
Clinical signs may worsen over time and either remain stable for a period of time or continue to worsen
Clinical Signs:
Posture and Appearance
Inability to hold head up
Movement
Ataxia
Tetraparesis to tetraplegia
Walking in a “waddling” fashion
Spinal Reflexes
Decreased or absent spinal reflexes
Muscle Atrophy
Generalized muscle atrophy
Posture and Appearance
Inability to hold head up
Movement
Ataxia
Tetraparesis to tetraplegia
Walking in a “waddling” fashion
Spinal Reflexes
Decreased or absent spinal reflexes
Muscle Atrophy
Generalized muscle atrophy
Peripheral nerve
Unknown
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