Non-Displaced Scaphoid Fractures
– See: – Scahoid Frx Menu – Non Diagnositic X-ray – Discusion: – tension in palmar radioscaphocapitate ligament leads to displacement of distal pole of scaphoid; – consider immobilization to relaxe palmar … Read more
Hand
Non Dissociative Carpal Instability
– See: carpal instability – Discussion: – refers to a proximal row instability which occurs in the absence of instability between the individual proximal carpi; – ie, the scapholunate and lunotriquetral intervals are normal; – potential sites of pathology: – capitolunate … Read more
Neurovascular Island Flap
– Discussion: – defect of the thumb; – long neurovascular island has be marked out to replace soft tissue & to increase the blood supply to the relatively avascular thumb; – long flap has been marked out on the ulnar border of the middle finger & proximal incision marked on the … Read more
Neurologic Deficits: following Supracondylar Frx
– See: Nerve Injury – Discussion: – always consider an occult compartment syndrome before a neurpraxia; – median nerve: – most common neural injury is to anterior-interosseous branch; – in type III frx, upto 50% of pts may show median … Read more
Neuro Exam: Brachial Plexus
– See: – Brachial Plexus – Exam of the Cervical Spine: – Preganglionic Injury – Work Up for Brachial Plexus Injuries: Muscles … Read more
Neurofibroma / Neurofibromatosis
– See: – Congenital Pseudarthrosis – Sarcoma Menu – Neurofibromatosis Foundation – Discussion: – neurofibroma is a benign tumor of neural origin; – has an autosomal dominant trait w/ variable penetrance & high rate of spontaneous mutation; – it is the most common … Read more
Nerve Repair
– See: Images kindly provided … Read more
Nerve Injuries in THR
– See: Total Hip Replacement Menu: – arterial injuries: in THR – nerve injury – nerve palsy from TKR – Discussion: – incidence of sciatic (tibial and/or peroneal) &/or femoral palsies after THR ranges from 1-3%; – incidence of nerve palsy is 1-2% of primary … Read more
Nerve Entrapment
– See: – Carpal Tunnel – Cervical Disc Disease – Cubital Tunnel Syndrome – Nerve Entrapment: – w/ entrapment, nerve fibers are not affected uniformly; – superficially located fibers tend to bear the brunt of compression, while central fibers are relatively spared; – large diameter, heavily myelinated fibers are more sensitive to compression than poorly … Read more
Natatory Ligament
– Anatomy: – other name for the superficial transverse metacarpal ligament; – these ligamentous fibers extend between the web spaces of the digits, and lie immediately beneath the skin, and helps create web space; – digital nerves & vessels pass deep or dorsal to natatory ligaments; … Read more