– Discussion: – sesamoid bone w/ in quadriceps tendon; – cartilaginous posterior surface is divided by a rounded vertical ridge into a larger, lateral portion for articulation w/ lateral condyle of femur and smaller medial portion for articulation w/ medial condyle of femur; – w/ increasing knee flexion, contact … Read more
– See: role of knee joint in locomotion and mechanical axis – Discussion: – bones forming the knee joint are femur, tibia, & patella; – both left and right femurs converge toward knee and each tibia is nearly vertical, femur and tibia meet angle of some 5-12 deg; … Read more
– See: Biomechanics of the ACL: – Discussion: – length of 38 mm (range 25 to 41 mm) – width of 10 mm (range 7 to 12 mm) – made up of multiple collagen fascicles; – surrounded by an endotendineum – microspocially: interlacing fibrils … Read more
– See: – Total Hip Replacement Menu: – total hip in DDH – acetabular component menu: – crowe classification – Anatomic Position – Discussion: – w/ low dislocation, attempts should be made for antatomic placement, but should also be considered w/ high dysplastic dislocation; – long term success … Read more
Discussion anatomic axis of femur is approx 6 deg of valgus from mechanical axis or 9 deg of valgus from vertical axis w/ variations according to body habitus; anatomic axis of tibia is in approx 2-3 deg of varus from mechanical axis; lines that intersect the tibia and the femur intersect at knee; this angle averages 6 deg
Gravity Method of Stimson Bigelow’s Maneuver: for Posterior Hip Dislocation Closed Reduction Discussion patient is placed in the supine position; knee is flexed to relax the hamstrings; assistant stabilizes the pelvis and applies a lateral traction force to the inside of the thigh; longitudinal traction is applied in line w/ axis of femur, and the hip is … Read more
– see bone graft menu – Discussion of Allografts: – see autograft menu and bone healing: – allografts are most indicated when bone grafting is required along with need for mechanical structural support; – morselized bone graft: – structural bone grafts: – fresh allografts – generally … Read more
Discussion consists of polyostotic fibrous dysplasia, cafe’-au-lait spots of “coast of Maine” variety, and premature menses; it is more common in girls than boys and accompanies approx 1 in 30 cases of polyostotic fibrous dysplasia; there is appreciable coincidence of other endocrinologic dz including hyperthyroidism & Cushing’s dz as well as hyperparathyroidism and hypophosphatemic rickets; in polyostotic cases of … Read more
– origin: – posterior fibers: ischial tuberosity; – anterior fibers: ramus of ischium and pubis; – insertion: – from a line extending from the greater trochanter along linea aspera, medial suprcondylar line and adductor tubercle on medial condyle of femur; – action: – … Read more
Origin: outer surface of inferior ramus of pubis; Insertion: on a line extending from lesser trochaner to linea aspera and proximal 1/4 of linea aspera; Action: adduction of the femur at the hip; lateral rotation as it adducts the thigh. some assistance to femur flexion at the hip; Nerve Supply: Obturator, L2, L3, L4; (See Innervation) Synergists: Gracilis, Pectineus