– See: – radiographic templating of femoral neck cut – femoral component offset – Discussion: – femoral neck cut will influence leg length, caput collum diaphysis (CCD) angle, and offset; – base of the femoral neck (“the shoulder”) is used as a reference for appropriate level of osteotomy; – Exposure: … Read more
– Theory of Tension Band: – anterior tension band wiring intentionally creates a small separation of surface of patellar articular surface w/ knee in extension; – as knee goes into flexion, frx gap at the patellar articular surface closes down; – this occurs as tension forces of … Read more
– Discussion: – interfragmentary screw fixation can be easily and securely combined w/ the use of an anterior tension band which provides resistance to fracture displacement from anterior distraction when knee is in extension as well as resistance to displacement as the knee moves into flexion; – this method is most appropriate … Read more
– Discussion: – theory of tension band wiring: – modified anterior tension band technique is indicated for both transverse and comminuted fractures of the patella; – for maximal strength, wires are placed on tension surface of bone (anterior surface), as compared to circumferential cerclage wiring; … Read more
– See: Iliotibial Band Syndrome – General Anatomy: – origin: – anterior iliac crest outer lip, anterior border of the ilium, outer surface of anterior superior iliac spine; – insertion: – iliotibial band of fascia lata on lateroanterior aspect of thigh, … Read more
– See: – Talocalcaneal Coalition – Calcaneonavicular Coalition – Discussion: – coalition between tarsal bones is frequent cause of painful flatfoot (pes planus) in the older child or adolescent; – tarsal coalition may be osseous, cartilaginous, or fibrous. – calcaneonavicular coalition bar is most common, followed by middle facet of talocalcaneal coalition joint; – single … Read more
– Discussion: – over the course of several hours, half or more of the dose accumulates in bone, and the remainder is excreted in urine; – images obtained over 2-4 hours (half life of technetium is 6 hours); – increased uptake in immature bone and metabolically active bone, or … Read more
– See: Tarsal Coalition – Discussion: – talocalcaneal coalitions are characteristically on medial side of sub-talar joint; – coalition tends to ossify between 12 and 15 years; – although coalition between calcaneus & talus may occur in any of three facets, middle facet is most commonly involved; … Read more
Discussion affects periarticular soft tissues resulting in joint laxity with secondary dysfunction; minimal synovitis – articular cartilage is preserved; Raynaud’s phenomenon is common; diagnosis depends on positive F ANA test along with three other criteria: swollen joints nephritis pericarditis severe rash references: The 1982 revised criteria for the classification of systemic lupus erythematosus. Updating the American … Read more