Brittle material Material with no or low capacity of plastic deformation. Ductile material Material with large capacity of plastic deformation. Elasticity Reversible deformation of a material. The material regains its…
Fig. 35.1 (a, b) A 28-year-old male with an unstable bursting fracture of ll. (c, d) He was treated by posterior instrumentation with pedicle screws made of titanium alloy. (e,…
Fig. 23.1 (a) Scheme of successive stages of treatment of patients with achondroplasia. (b) Chart of the simultaneous removal of the tibia and femur Fig. 23.2 Dependence of step length…
Fig. 19.1 Schematic representation of a metallic surface: (a) ideal surface, (b) technical surface obtained by metal processing, (c) technical surface with oxide layer. The miscrostructure (grains) is typical for…
Fig. 31.1 The force from deltoid contraction (gray) acts some distance from the center of glenohumeral rotation and therefore acts both to rotate the joint and to translate this superiorly…
Fig. 22.1 Growing cartilage of a vertebra. (a) Vertebral plateau. (b) Bipolar cartilage = neurocenral cartilage. (c) Posterior elements apophyseal cartilage. P periosteum, R ring apophysis Vertebral Growth Plates Each vertebra has…
Fig. 33.1 (a) Transverse pedicle diameters. (b) Superoinferior pedicle diameters. (c) Anteroposterior pedicle angles. (d) Horizontal pedicle angles In children, the pedicles are smaller, but their relative dimensions and orientations…
Postoperative (weeks) Condylen-upracondylen Distal third of femoral shaft Proximal third of femoral shaft Subtrochanter Femoral neck-femoral head 1–3 → → → → 4 ↑ → → → 6 ↑ →…
Weight % SiO2+M20 (M20:Na20,K20 etc) 0.1 Fe203 0.1 Al203 0.5 Y203 4.8 ± 0.7 Zro2 Remainder Fig. 3.1 (a) A zirconia made femoral head with an outer diameter of…
ISO Standard ISO 6474-1 ISO 13 356 ISO 6474-2 Material Unit Pure alumina Zirconia Alumina zirconia type X Average bulk density ≥3.94 g/cm3 ≥6.00 g/cm3 ≥99 % Chemical composition wt…
