Ortho Oracle - orthopaedic operative atlas

Cement Mixing Technique for TJR

– See: Addition of Antibiotics to Cement – Discussion:     – full discussion of technique for cementing femoral stems     – mixing under vacuum reduces retained air & incr cement strength;     – typically 2 bags are needed;     – slower mixing of cement over a shorter time decreases air voids within cement and … Read more

Cemented Femoral Stems

– See: Total Hip Replacement Menu:          – Cemented Femoral Component: Loosening:          – Collar: in THR          – Optimal Cementing Technique          – Removal of Cemented Femoral Stems: – Indications:     – cemented femoral stems probably remain gold standard for total … Read more

Central Acetabular Fracture Dislocations

– Discussion:      – central frx/dislocation is crippling injury with a poor prognosis;      – extensive degree of concomitant articular injury occurs;      – 22% incidence of sciatic nerve injury;      – distal and occassionally, lateral traction of proximal femur may be necessary to effect and maintain reduction of the femoral head;      – total … Read more

Aspiration of the Hip Joint

– Discussion: – anterior approach: – femoral artery may be palpated in femoral triangle, & may be used as a guide in aspirating the hip joint; – palpate the femoral pulse just as it exits the inguinal ligament; – entry point is one inch lateral to the artery (at the inguinal ligament) and one inch … Read more

Ascending Cervical Branches to the Hip

Discussion ascending cervical branches arise from extracapsular arterial ring; anteriorly, they penetrate capsule of hip joint at intertrochanteric line; posteriorly, they pass beneath the orbicular fibers of capsule; ascending cervical branches may be divided into 4 br; anterial, medial, lateral, posterior; of these lateral provides most of blood supply to femoral head; at margin of … Read more

Articular Cartilage

– See:        – Chondral and Osteochondral Injuries of the Knee / Articular Cartilage: Injury and Potential for Repair: / Osteoarthritis         – Enchondral Ossification  – Discussion:     – hyaline cartilage caps ends of bones that form synovial joints;      – in other hyaline cartilage structures, surrounding perichondrium contains both capillaries for nutrition and the cells that become … Read more

Arthrofibrosis from ACL Injuries

– Discussion:     – need to determien whether the fibrous has primarily affected flexion or extension;     – need to determine either from radiographs or from MRI, whether incorrecttunnel placement, is the cause of the decrease motion and             fibrosis;     – also evaluate for patella baja;            – … Read more