– See: – Austin Moore Prosthesis: – only true calcar support prosthesis is the old Moore implant, whose stem was too small to provide canal fill in most cases; – designed for patients w/ 1/2 to 3/4 inches of remaining femoral … Read more
– See: Unstable Intertrochanteric Fractures – Discussion: – consist of an intertrochanteric frx w/ a subtroch component; – constitutes 15% of intertroch frx; – Treatment Options: – sliding hip-screw or 2nd-generation locking nail may be used in rx of intertroch-subtroch frx that have femoral shaft extension; … Read more
– See: Posterior Frx Dislocations of the Hip – Discussion: – prognostic features: – long term results are proportional to the degree of intial trauma – this explains percentage of good results progressively decreasing from type II to type V injuries. … Read more
– Discussion: – least common pediatric femoral neck frx (about 7%); – capital femoral epiphysis may stay w/in acetabulum but in 50% of cases the capital fragment is dislocated; – tends to occur in infants and young children; – this injury may be the result of a … Read more
– Discussion: – due to loss of estrogen & affects postmenopausal women; – 2-3% accelerated (loss for 6-10 yrs which then returns to basal loss of 0.3-0.5 %/year; – primarily loss of trabecular bone: – associated w/ greater decline in medullary bone & preservation … Read more
– Nonossifying fibroma – Osteosarcoma – Giant Cell Tumor of Bone – Ewing’s sarcoma: – Osteochondroma – Chondroblastoma – Chondromyxoid fibroma – Eosinophilic granuloma … Read more
Local Tenderness – Osteosarcoma (common)—————————– Yes – Ewing’s sarcoma: (common) ———————— Yes – chondrosarcoma ———————————– Yes – Osteochondroma (Osteocartilaginous Exostosis) – Fibrous Dysplasia ——————————– Yes – Eosinophilic granuloma ————————— Yes – Aneurysmal bone cyst – Prostatic Ca: – most of prostatic ca mets are blastic & do not require … Read more
– Diff Dx: – Osteosarcoma – Osteochondroma – Fibrous Dysplasia – Ewing’s sarcoma: – Osteoid Osteoma – Eosinophilic granuloma – Aneurysmal bone cyst – Simple bone cyst – Chondrosarcoma: – Fibrous Histiocytoma – … Read more
– See: – Myobacterium tuberculosis – Vertebral Osteomyelitis – Discussion: – 4000 cases of extrapulmonary involvment each year in the US; – most common extra pulmonary location of TB is the spine; – spine is the extrapulmonary site in over 50% of the cases of … Read more
– Discussion: – trochanteric non union is thought to occur in 2-15% of cases (following trochanteric osteotomy); – most trachanters that heal by osseous union do so within 3 months; – between 3 and 6 months, they are considered delayed union; – beyond … Read more