Neural amyotrophy:- it's a condition in which sensory and motor peripheral nerve fibers are damaged
Charcot marie tooth disease, parsonage turner syndrome, acute brachial neuritis, idiopathic brachial plexopsthy was a condition of neural amyotrophy
Charcot Marie tooth disease is a hereditary disorder caused by mutation in genes... this mutation cause demyelination of sensory and motor peripheral nerve
Parsonage turner syndrome or acute brachial neuritis(inflammation of brachial nerve):- it's condition of neural amyotrophy severe shoulder pain that radiates to arm neck and scapula
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| Shoulder pain |
Complaints:- sudden severe pain and weakness in the shoulder last for few weeks
Ethiology:-
★ In most cases the causes are unknown
★viral infection
★ autoimmune disease
★ excessive physical exercise
★ stress
★ post surgery
★ genetic (mutation in the gene)
Pathogenesis
★ The nerve to shoulder muscle is damaged
★ most common muscle involved is infraspinatus, supraspinatus and deltoid muscle innervated by subscapular and axillary nerve
★ motor changes predominantly occur over sensory changes
★ can involve brachial plexus from C5-T1 with variable degree of weakness
Clinical features
★ bilateral muscle weakness of upper limb
★severe pain and muscle wasting
★ limitations of movement of upper limb
★ winged scapula and severe shoulder pain
Risk factors
★ surgical procedure
★ excessive physical exercise
★ stress
Differential diagnosis
★ Radiculopathy from herniated disc
★ adhesive capsulities or frozen shoulder
Diagnosis
★ electromyography EMG:- shows nerve damage, denervation in the roots, fibrillation, hour-glass findings
★MRI reveals atrophy and fatty infiltration
Treatment
★ Analgesics (opioids)
★ oral steroids like prednisolone
★ physical therapy
★ complete recovery in 3 years
