– See: – Post Op X-rays for THR: – Press Femoral Stems: – Normal Adaptive Changes: – proximally coated femoral stems should show fusiform cortical hypertrophy along the coated portions of the stem and absence of radiolucent lines; – distally radiolucent lines will surround the … Read more
– See: – Types of Loosening: – Exam for THR Loosening: – Grading of Cement Technique: (Barrack, et al. (1992) and Mulroy, et al. (1995)) – Grade A: meduallary canal completely filled w/ cement (white out). – Grade B: a slight radiolucency exists at the … Read more
– See: Radiology of the Acetabulum – Discussion: – instability = cephalic displacement of posterior sacroiliac complex of at least 5-15 mm on inlet and outlet views; – look for gap (rather than impaction) posteriorly, & frx of 5th lumbar transverse process or avulsion of sacrospinous ligament; – Pertinent Radiographs: – AP … Read more
– See: PreOp Planning: – Discussion: – a candidate for HTO should have relatively normal lateral and patellofemoral compartments; – degenerative changes confined to medial compartment should be apparent in x-rays, although minor arthritic changes in lateral compartment or patellofemoral joint are not absolute contraindications – HTO is contraindicated w/ lateral compartment or patellofemoral symptoms … Read more
– See: – Technique of Femoral Neck Resection – Femoral Component Offset – Discussion: – some pts have relative coxa vara and a very short distance between the lesser trochanter and the pelvis; – others have a relative coxa valga and a large distance between the lesser … Read more
– See: – Classification – Singh index – Unstable Intertrochanteric Fractures – AP view (internal rotation); – allows determination of frx obliquity & bone quality; – if hip is in external rotation, greater troch rotates posteriorly & will overlie part of the fracture … Read more
– Discussion: – radiographs of knee hemarthrosis, may show the capsule in distension; – synovitis, cartilage thinning, widening and ersion of intercondylar notch; – enlargement of ossification centers, esp distal end of femur; – hemorrhage can displace periosteum to such extent that huge soft tissue mass results … Read more
– See: Radiology of Hip – Pre Reduction Evaluation: – frx-dislocation usually confirmed by a single AP x-ray; – rule out: assoc acetabular, femoral head, or femoral neck frx; – these must be recognized prior to reduction; – femoral head: for assoc frx; … Read more
– See: DDH – Indications for Radiographs: – for confirming position of hips getting treatment; – for confirming a suspected teratologic dislocation; – Patient age: – x-rays may not reveal a dislocation until infant is > 6 wks since so much of the pelvis is cartilaginous; … Read more
– See: – Innervation – Rectus Femoris / Intermedius / Lateralis / Medialis – Extensor Mechanism Injuries of the Knee – Rupture of the Quadriceps – Rectus Femoris: origin: – straight head: anterior … Read more