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Lower Motor Neuron Lesion

Etiology and Causes

Lower Motor Neuron Lesions affect voluntary muscle control due to damage in motor pathways, leading to muscle weakness, atrophy, and diminished reflexes. Common causes include trauma, infections, degenerative disorders, and vascular diseases.

6/7/20254 min read71 views
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Lower Motor Neuron Lesion: Causes, Symptoms, and Treatment

Lower Motor Neuron Lesion: Etiology and Causes

Introduction

Lower Motor Neuron (LMN) lesions affect motor pathways responsible for voluntary muscle control. These lesions lead to weakness, atrophy, and diminished reflexes, impacting mobility and daily function.

Etiology

LMN lesions can result from various underlying conditions, including trauma, infections, degenerative diseases, and neoplastic disorders.

Common Causes

  • Trauma: Peripheral nerve injuries, spinal cord damage
  • Infections: Poliomyelitis, Guillain-Barré Syndrome
  • Degenerative Diseases: Amyotrophic Lateral Sclerosis (ALS), Spinal Muscular Atrophy
  • Neoplastic Conditions: Tumors affecting motor pathways
  • Vascular Disorders: Stroke, ischemic nerve damage

Clinical Features

  • Muscle weakness and atrophy
  • Absent or diminished reflexes
  • Fasciculations
  • Flaccid paralysis

Diagnosis and Management

Diagnosis involves neurological examination, electromyography (EMG), nerve conduction studies, and imaging modalities like MRI and CT scans. Management depends on the underlying cause and may involve physiotherapy, pharmacological treatment, and surgical intervention.

Conclusion

Lower Motor Neuron lesions significantly impact muscular control and function. Early diagnosis and appropriate management can improve patient outcomes and quality of life.

Tags

#Lower Motor Neuron#Neurology#Motor Disorders#Orthopaedics#Muscle Weakness

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