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CMT Type I

– See: CMT Menu: – Discussion:     – autosomal dominant inheritance;     – type-I and III disorders are due to demyelination of peripheral nerves;     – clinical presentation is most common during the second decade of life;     – due to defect in the gene coding for peripheral myelin protein-22 on chromosome … Read more

CMT Type II

– See: CMT Menu: – Discussion:     – autosomal dominant inheritance;     – type II is the neuronal form of CMT disease and is seen infrequently;     – onset is delayed until the second or third decade of life;     – sensory and motor nerve-conduction times that are only mildly abnormal, and … Read more

CMT Type III

– See: CMT Menu: – Discussion:     – includes the hypertrophic neuropathy of infancy (Dejerine-Scottas);     – autosomal recessive trait;     – begins in infancy;     – EMG in demyelinating neuropathies:            – marked slowing in nerve conduction velocity which is more extensive than those seen in … Read more

Clavicle Fractures

– See:        – Clavicular Frx in Children /  Congential Pseudoarthrosis of Clavicle        – AC joint / Sternoclavicular Joint Injury / Scapula Fracture        – Discussion and Classification  – Exam Findings:     – brachial plexus      – ref: Injury to the brachial plexus by a fragment of bone after fracture of the clavicle – Radiology:        – Serendipity View  … Read more

Chauffeur’s Fracture: Radial Styloid Fractures

– Discussion:     – radial styloid frxs most commonly occur from tension forces sustained during ulnar deviation and supination of the wrist;     – strong radiocarpal ligament, particularly radioscaphocapitate ligament, avulse  radial styloid from metaphysis of the radius;     – ligamentous attachments maintains alignment radial styloid to carpus, but styloid may be markedly displaced from … Read more