– see postoperative radiographic evaluation of total hip replacement – Discussion: – acetabular component loosening: – osteolysis / polyethylene wear: – Component Position: – acetabular component flexion: – to measure postoperative cup position, a standing true lateral view of the operated hip allowed direct measurement of … Read more
– Discussion: – indicated for comminuted radial head frx which occur w/ concomitant MCL injury, dislocation, or RU joint disruption (Essex Lopresti Fracture); – will serve as spacer & will prevents proximal migration of radius; – w/ RU joint disruption, radial head spacer alone does not restore satisfactory axial stability w/o pinning the distal radioulnar … Read more
– Discussion: – is apparent when with stress testing lateral tibial plateau rotates posteriorly in relation to the femur with lateral opening of joint; – atraumatic type: – presents as chronic laxity, often with a varus knee deformity; – this ligamentous laxity often … Read more
– Graft Selection: – bone patella bone allograft or achilles tendon allograft; – if achilles tendon is used, the free end is secured w/ a locked whip stitch (Krackow stitch); – in the report by Fanelli et al. 1996, there was no disadvantage … Read more
– Debride Bone Edges: – Drill and Pass Sutures: – note that many surgeons will prefer to make bone plug drill holes before the plug is harvest w/ a saw; – use a 2 mm drill to make three drill holes into the graft for the tibial tunnel … Read more
– See: – Bone Tumor Menu: – Classic Osteosarcoma – Discussion: – parosteal osteosarcoma is a low-grade malignant bone tumor that usually occurs on the surface of the metaphysis of long bones; – arises between cortex and muscle as a low grade stage I-A surface tumor (ie does not initially invade … Read more
– Discussion: – preadolescents w/ spinal cord injury have > 95% prevalence of scoliosis & 50% of pts have a pelvic obliquity; – progressive kyphoscoliosis results from effects of gravity & loss of spinal musculature; – up to 2/3 of these patients will requre arthrodesis to prevent severe curve progression; – Non Operative … Read more
– See: – Total Hip Replacement Menu: – Acetabular Component Revision: – Acetabular Defects Grafting Options: (frozen allograft) – Dysplastic Hip: – Acetabular Radiographic Evaluation – Posterior … Read more
– Discussion: – commonly presents in females over age 60 years of age; – pain may or may not be associated w/ acute injury and may be worse at night; – these lesions often show articular degenerative changes, especially when lesions are large or when there is pre-existing varus … Read more
– Discussion: – see: homeobox genes database – history: discovered by Marshall Urist in the early 1960s; – currently sixteen different proteins (BMP-1 through BMP-16) have been identified; – these proteins can now be produced by recombinant DNA technology and are further purified by column chromatography; … Read more