– See: Bone Tumor Menu: – Osseous Sarcoma: – occur less often in bone than in soft tissue; – occurs in older patient population & may arise out of Pagets Dz or from a bone infarct (such as sickle cell); – it usually presents as an aggressive stage IIb … Read more
– Discussion: – indicators for poor outcome: – encroachment of tumor on the popliteal neurovascular bundle; – pathologic fracture with contamination of multiple tissue compartments; – local recurrence from previous surgery The Treatment of Lower Extremity Sarcomas With … Read more
– Discussion of Limb Lengthening: – Distraction Histiogenesis: (osteoclasis): – whether a ring or unilateral fixator is used, there is some evidence that a better regenerate is formed with the use of titanium half pins rather than transfixation wires; – ref: Limb lengthening by callus distraction (callotasis). – … Read more
– Discussion: – PFFD – its impotant to distinguish between lengthening down the anatomic axis and lengthening down the mechanical axis; – lengthening along the anatomic axis will displace the knee medially (displacing the mechanical axis); – lengthening along the mechanical axis does not … Read more
– Discussion: – see: limb development and physeal anatomy; – leg length discrepancy leads to awkward gait, & pelvic obliquity. – treatment of limb length inequality, requires an ability to predict leg length discrepancy at skeletal maturity; – differential diagnosis of limb length inequality – … Read more
– See: Methods to Etimate Growth Potenital – Arrest of the Growth Plate / Epiphysiodesis: – disruption of contra-lateral (normal) distal femora or proximal tibial growth plates is indicated when future discrepancies are < 5.1 cm at maturity; – references: – Closed shortening of the femur … Read more
– See: Limb Lengthening Fixators Post Op Care in the Ilizarov Method: (by Dr. Mangal Parihar) distraction histiogenesis – Discussion: – lengthening thru the proximal tibia, tends to drift into valgus and procurvatum, and therefore consider presetting distraction in 5 deg of varus; … Read more
– Discussion: – plays a role in intertroch stability; – evaluate size & displacement of lesser troch before judging instability; – lesser troch has a postero-medial location and when this structure is frx & displaced, defect results at post medial aspect of frx surfaces; – axial loading studies … Read more
– Discussion – principles of treatment are maintenance of ROM & containment of femoral head through the evolution of healing of the epiphysis; – in child > 5 yrs who has more than 1/2 of epiphysis involved, abduction bracing or surgery are methods of treatment currently employed; … Read more
– See: Synthes Plates and Screws:3.5 MM DCP, LC-DCP 3.5 MM LCP 4.5 MM LCP RECONSTRUCTION PLATE – Dynamic Compression Plates: – Properties of Titanium; – Discussion: – is used for same indications as DCP, but the improved design offers additional advantages; – undercut plate holes: undercut at each … Read more