Data Trace Editor – see: TKR menu – Discussion: – notching may occur with the anterior femoral cut; – classification: 4 grades using the Tayside classification: – grade I: violation of the outer table of the anterior femoral cortex; – grade II: violation of the outer and the inner table of the anterior femoral cortex; – grade … Read more
– Anatomy: – arises from posterior divisions of Ventral Rami of L2, L3, L4 – see innerv. musc. lower limb; – passes inferolaterally thru psoas, & then runs between this muscle & iliacus; – it passes over Iliacus muscle to enter thigh underneath the inguinal ligament; … Read more
– See: Avascular Necrosis following Femoral Neck Fracture – Discussion: – usually non unions are apparent w/in one year of femoral neck frx; – incidence ranges from 10 to 30%; – only 1/3 of pts w/ AVN will require additional surgery where as – 3/4 patients with … Read more
– See: Accetable Reduction Parameters – Discussion: – always attempt closed reduction before open reduction; – evaluation of the lateral x-ray after reduction to evaluate posterior comminution of the femoral neck is critical; – posterior comminution leads to the loss of a butressing effect posteriorly, w/ subsequent loss of reduction … Read more
– See: – x-rays for femoral neck fractures – technique of closed reduction – Acceptable Reduction: – poor reduction of femoral neck frx interferes w/ blood supply to femoral head & decreases apposition of bone between bone fragments; – reduction should leave neck-shaft angle between … Read more
– Discussion: – two sites have been proposed for nail entry: – tip of the greater trochanter and the piriformis fossa; – Entry thru Piriformis Fossa; – main advantage a colinear trajectory with the long axis of the femoral shaft – accurate positioning of the entrace hole is critical. … Read more
– Discussion: – see acetabular component, reestablishment of acetabular floor, and component position; – see: preoperative and post operative radiographic eval – femoral offset is measured from the distance between the center of the femoral head and a line drawn down center of femoral shaft; – note that increasing … Read more
– Anatomy: – anatomy of femur – neck shaft angle: – references: – The femoral neck-shaft angle on plain radiographs: a systematic review. – The neck shaft angle: CT reference values of 800 adult hips – Press … Read more
– See: Total Hip Replacement Menu – Discussion: – design considerations – femoral stem collar – cemented femoral stems (radiology of cemented femoral stems) – press fit femoral stems – femoral component offset – modular neck: – … Read more
– See: – Total Hip Replacement Menu: – Acetabular Bone Grafting: – Allografts – Discussion: – indicated for pts w/ severe osteolysis or for femoral shaft fractures; – in younger pts, structural allografting may eventually allow some … Read more