Data Trace Editor – Discussion: – see chondrosarcoma – also known as extraskeletal myxoid chondrosarcoma; – it is known also as chordoid sarcoma because of its resemblance to chordoma; – accounts for < 2 % of all soft-tissue sarcomas; – tumor usually affects men, in fifth decade of life; … Read more
– Factors Related to Extremity Injury: – duration of use; – it is thought that muscles are more sensitive than nerves to duration of tourniquet use; – use of tourniquet for > 2 hours & pressures of > 350 mm of mercury in … Read more
Discussion superior dislocation of the lens & retinal detachment; diagnosed at or shortly after birth; myopia is often present and may be severe; retinal detachment can occur in association w/ severe myopia, leading to partial or complete blindness
– See: orthofix fixator – Discussion: – convential “bridging” external fixation relies on ligamentotaxis to apply traction & restore displacement; – indications: – active pts when radial length is decr by > 3-4 mm; – presence of dorsal comminution; – when closed reduction fails to restore anatomic palmar tilt; – for any unstable or intra-articular … Read more
– See: IM Nailing for Distal Tibia Fracture – Discussion: – outcomes: – in a retrospecitive study, external fixation was considered a risk factor for non union (29% non union rate); – Distal tibia fractures: management and complications of 101 cases – reduction: – … Read more
– External Fixation Main Menu – Discussion: – disadvantages of external fixation: – pin tract infections, delayed union / non-union, and malunion; – cosmetic problems; – advantages of external fixation: – technically easy to perform; – no soft tissue stripping; – ease of removing hardware; – comparison of IM nailing vs external fixation – Initial … Read more
– See: – Over Distraction of Wrist Joint – Palmar Tilt Reduction – Radial Inclination Reduction – Wrist Position: – wrist is placed in neutral to slight extension w/ care taken not to over distraction the hand; – over distraction is related … Read more
– Metacarpal Incision: – always performed first, to ensure proper length of fixator; – make longitudinal incision from base of 2nd metacarpal to its midshaft; – terminal branches of radial sensory nerve can be identified & carefully retracted; – dissect down to bone, and insert … Read more
– See: Internal Rotation – Discussion: – external-rotation laxity increases w/ knee flexion, w/ largest amount (20 degrees) being seen in the 30-40-deg range of flexion; – external rotation is not directly limited by cruciate ligaments; – only PCL, which becomes taut at 90 deg of flexion, would be expected to … Read more
– Discussion and Indications: – definitive stabilization of frx may be achieved w/ external fixation in certain rotationally unstable but vertically stable injuries; – relative contraindication is iliac wing fractures; – antero-posterior compression injuries: – external fixation is most applicable to stable “open book” … Read more