
Preparation of Specimens

tumor, fracture, arthritis, rheumatism, denture
TUBERCULOSIS, TUMOR, ARTHRITIS, RHEUMATISM
Twelve male adult femoral cadaveric specimens (soaked in formalin for 4–9 months) from six patients aged 32–60 years (average age, 39 years) were selected. The soft tissue attached to the femur was excluded, and all femur specimens were devoid of fracture, arthritis, tumor, tuberculosis, rheumatism, and other pathological conditions, as confirmed via X‐ray photography. The 12 specimens were randomly categorized into groups A, B, or C, with four specimens in each group labeled together. The femoral neck diameters of each group were measured and compared, and the results revealed that the diameters of the three groups were 30.5 ± 1.6, 29.9 ± 1.3, and 29.85 ± 2.0 mm, respectively, with no statistically significant difference among the three groups (p > 0.05). The specimens were then wrapped in gauze soaked with 0.9% NaCl solution and stored in a freezer at −20°C. These were placed at room temperature for ablation 12 h before use. In the experiment, all femur specimens were sown off the distal end of the same part, and the processed femur specimens were embedded with denture powder to become fixed and form a base. The shaft of the femur was made at an angle of 15° to the natural vertical plane to simulate one‐foot bearing standing. A mark was made in the center of the femoral head of all specimens to observe and record the central displacement of the femoral head during the test.